59. Graphic timer (GFXTIM)

This section only applies to STM32U5Fx/5Gx devices.

59.1 GFXTIM introduction

The graphic timer (GFXTIM) is a graphic oriented timer allowing smart management of graphical events for frame or line counting.

59.2 GFXTIM main features

• Integrated frame and line-clock generation
• One absolute frame counter with one compare channel
• Two auto-reload relative frame counters
• One line timer with two compare channels
• External tearing-effect line management and synchronization
• Four programmable event generators with external trigger generation
• One watchdog counter

59.3 GFXTIM functional description

59.3.1 Block diagram

The graphic timer is split into six functional blocks

• Clock generator
• Absolute timers
• Relative timers
• Tearing-effect detection
• Event generators
• Watchdog timer

Figure 750. GFXTIM block diagram

GFXTIM block diagram showing internal components like Source Selection, Control and status, Clock generator, Absolute timer, Event Generators, Relative timers, and Watchdog timer. It includes a legend for Frame-clock domain (blue) and Line-clock domain (green).

The block diagram illustrates the internal architecture of the GFXTIM. On the left, external pins are shown: GFXTIM_TE, gfxtim_ite, gfxtim_hsync[3:0], gfxtim_vsync[3:0], gfxtim_it, gfxtim_wdg_it, gfxtim_hclk, gfxtim_ev1, gfxtim_ev2, gfxtim_ev3, gfxtim_ev4, gfxtim_wrld, GFXTIM_FCKCAL, and GFXTIM_LCKCAL. A 32-bit APB bus connects to the internal components. The internal blocks include:

Source Selection: Receives gfxtim_ite, gfxtim_hsync[3:0], and gfxtim_vsync[3:0] to produce TE, HSYNC, and VSYNC signals.
Control and status: Contains Int. registers and receives gfxtim_it and gfxtim_wdg_it.
Clock generator: Receives HSYNC and VSYNC, and produces Frame Ck and Line Ck. It contains two Auto-reload blocks and counters (22-bit line-clock counter and 12-bit frame-clock counter).
TE Detect: Receives TE and produces a TE output.
Absolute timer: Contains a 20-bit frame counter and a 12-bit line counter, each with Compare registers. It is connected to the 32-bit APB bus and produces AFCCO, ALCCO, ALCC1, and ALCC2 signals.
Event Generators: Four event generators (1-4) that produce EV1, EV2, EV3, and EV4 signals. They receive inputs like AFCCO, AFCC, RFC1R, RFC2R, ALCCO, TE, ALCC1, and ALCC2.
Relative timers: Two 12-bit frame counters (1 and 2) with Auto-reload and Compare registers. They receive inputs like ALCCO, ALCC1, ALCC2, and produce RFC1R and RFC2R signals.
Watchdog timer: Contains an Auto-reload, a 16-bit counter, and a Pre-alarm block. It receives inputs like wrld, Line Ck, Frame Ck, HSYNC, VSYNC, TE, EV1, EV2, EV3, EV4 and produces ALRM and PALRM signals.

A legend at the bottom indicates that blue boxes represent the Frame-clock domain and green boxes represent the Line-clock domain.

GFXTIM block diagram showing internal components like Source Selection, Control and status, Clock generator, Absolute timer, Event Generators, Relative timers, and Watchdog timer. It includes a legend for Frame-clock domain (blue) and Line-clock domain (green).

MSV66908V3

59.3.2 GFXTIM pins and internal signals

Table 617. GFXTIM input/output pins

Pin name	Signal type	Description
GFXTIM_TE	Input	Tearing effect
GFXTIM_FCKCAL	Output	Frame-clock calibration output
GFXTIM_LCKCAL	Output	line-clock calibration output

Table 618. GFXTIM internal signals

Signal name	Signal type	Description
gfxtim_hclk	Digital input	Kernel and register interface clock
gfxtim_it	Digital output	Global interrupt
gfxtim_wdg_it	Digital output	Watchdog interrupt
gfxtim_ev1	Digital output	Graphic timer event 1
gfxtim_ev2	Digital output	Graphic timer event 2
gfxtim_ev3	Digital output	Graphic timer event 3
gfxtim_ev4	Digital output	Graphic timer event 4
gfxtim_wrld	Digital input	Watchdog reload
gfxtim_ite	Digital input	Internal tearing effect

Table 618. GFXTIM internal signals (continued)

Signal name	Signal type	Description
gfxtim_hsync[3:0]	Digital input	Horizontal synchronization
gfxtim_vsync[3:0]	Digital input	Vertical synchronization

The table below shows how GFXTIM triggers are connected.

Table 619. GFXTIM trigger interconnections

Trigger name	Direction	Trigger source/destination
gfxtim_ev1	Output	gpdma_trigsel[62]
gfxtim_ev2	Output	gpdma_trigsel[61]
gfxtim_ev3	Output	gpdma_trigsel[60]
gfxtim_ev4	Output	gpdma_trigsel[59]
gfxtim_wrld	Input	reserved
gfxtim_ite	Input	reserved
gfxtim_hsync[0]	Input	LCD_HSYNC
gfxtim_hsync[1]	Input	reserved
gfxtim_hsync[2]	Input	reserved
gfxtim_hsync[3]	Input	reserved
gfxtim_vsync[0]	Input	LCD_VSYNC
gfxtim_vsync[1]	Input	reserved
gfxtim_vsync[2]	Input	reserved
gfxtim_vsync[3]	Input	reserved

59.3.3 Clock generator

Two clocks are generated internally to fed the absolute and relative timers:

• the frame-clock: clocking frame counters
• the line-clock: clocking line counters

Internal counter for time base generation

The GFXTIM embeds a two-clock generation counter:

• a 22-bit auto-reload down-counter on the system clock
• a 12-bit auto-reload down-counter on selectable internal or external event

Figure 751. Clock generator

Figure 751. Clock generator diagram showing two counter blocks: Line-clock counter and Frame-clock counter. The Line-clock counter is a 22-bit down-counter with an 'Auto-reload' register. Its clock source is selected by LCCCS (LCCUF, VSYNC, HSYNC, TE) and it reloads via LCCReload (LCCUF, VSYNC, HSYNC, TE) or SWReload. It outputs a 'Line-clock'. The Frame-clock counter is a 12-bit down-counter with an 'Auto-reload' register. Its clock source is selected by FCCCS (LCCUF, FCCUF, VSYNC, HSYNC, TE) and it reloads via FCCReload (FCCUF, VSYNC, HSYNC, TE) or SWReload. It outputs a 'Frame-clock'. Both counters are connected to a common SYSCK input.

Line-clock counter

The line-clock counter is a 22-bit auto-reload down-counter on the system clock.

The line-clock counter is enabled selecting its clock source with LCCCS (line-clock counter clock source) in GFXTIM_CGCR (clock generator control register).

The line-clock counter can be reloaded automatically when one of the following event occurs:

• frame-clock counter underflows
• VSYNC edge (with control of polarity)
• HSYNC edge (with control of polarity)
• TE edge (with control of polarity)

The hardware reload function and source can be selected with LCCHRS (line-clock counter hardware reload source) in GFXTIM_CGCR (clock generator control register).

The line-clock counter can be reloaded by software, setting LCCFR (line-clock counter force reload) in GFXTIM_CGCR (clock generator control register).

The reload value is programmed in GFXTIM_LCCRR (line-clock counter reload register).

Frame-clock counter

The frame-clock counter is an 12-bit auto-reload down-counter clocked by either, TE, HSYNC, VSYNC or a line-clock counter underflow.

The frame-clock counter is enabled selecting its clock source with FCCCS in GFXTIM_CGCR.

The frame-clock counter can be reloaded automatically when one of the following event occurs:

• line-clock counter underflow
• VSYNC edge (with control of polarity)
• HSYNC edge (with control of polarity)
• TE edge (with control of polarity)

The hardware reload function and source can be selected with FCCHRS in GFXTIM_CGCR.

The frame-clock counter can be reloaded by software, setting FCCFR in GFXTIM_CGCR.

The reload value is programmed in GFXTIM_FCCRR.

Clock generation

The line-clock source can be one of the following:

• underflow flag of the internal 22-bit down-counter
• underflow flag of the internal 12-bit down-counter
• HSYNC, VSYNC or TE pin (with control of polarity)

The frame-clock source can be one of the following:

• underflow flag of the internal 22-bit down-counter
• underflow flag of the internal 12-bit down-counter
• HSYNC, VSYNC or TE pin (with control of polarity)

Clock calibration output

For calibration/debug purpose, the frame-clock and line-clock can be output on a specific I/O.

The frame-clock calibration output is enabled by setting FCCOE (frame-clock calibration output enable) in GFXTIM_CR (configuration register).

The line-clock calibration output is enabled by setting LCCOE in GFXTIM_CR.

Synchronization and tearing-effect sources

The GFXTIM can be connected to peripherals providing HSYNC and/or VSYNC synchronization signals, like the LCD-TFT controller or the camera interface.

The source of HSYNC and/or VSYNC is selected through SYNCS (synchronization source) in GFXTIM_CR.

The tearing-effect source can be an external pin or can be provided by the MIPI® DSI Host on system embedding this interface. To extend the orthogonality versus the synchronization signals, the tearing-effect source can be also the selected HSYNC or VSYNC input.

The tearing-effect source can be selected with TES (TE source) in GFXTIM_CR.

59.3.4 Example of clock generator configuration

The clock generator can have several configuration to work:

• in standalone (without any external synchronization)
• with external HSYNC and VSYNC
• with external HSYNC only
• with external VSYNC only
• with external CSYNC (TE) only

The synchronization signals, HSYNC, VSYNC and TE, are symmetrical in the implementation and can be exchanged if needed.

The set of examples detailed below are given for reference, but other combinations can be programmed into the clock generator.

Standalone

In standalone configuration, the clock generator provides to the GFXTIM, the frame-clock and the line-clock without any external signals.

Figure 752. Waveforms in standalone

Figure 752: Waveforms in standalone. The diagram shows four waveforms over time. LCCounter is a sawtooth wave. LCCUF (Line-clock counter underflow) is a periodic pulse. FCCounter shows a sequence of numbers: 1, 0, n, n-1, n-2, n-3, n-4, followed by 2, 1, 0, n, n-1, n-2. FCCUF (Frame-clock counter underflow) is a long-period pulse. Labels indicate 'Display refresh duration' and 'Line duration'.

The LCCUF (line-clock counter underflow) event acts as line-clock and the FCCUF (frame-clock counter underflow) acts as frame-clock.

The clock generator can be synchronized by one of the following ways:

• by software reload, setting the FCCFR in GFXTIM_CGCR.
• by hardware reload on an external VSYNC (or TE)

Figure 753. Active counters and signals in standalone

Figure 753: Active counters and signals in standalone. This block diagram shows the internal structure of the GFXTIM. It includes a 'Line-clock counter' (Auto-reload, 22-bit counter) and a 'Frame-clock counter' (Auto-reload, 12-bit counter). Inputs include FCCUF, VSYNC, HSYNC, and TE. The Line-clock counter outputs 'Line-clock' and the Frame-clock counter outputs 'Frame-clock'. A legend indicates 'Selected function' with a purple box.

External HSYNC and VSYNC

When using external HSYNC and VSYNC, the counters are not used for the line and frame-clock generation. The clock generator copy directly HSYNC to the line-clock and VSYNC to the frame-clock.

Figure 754. Waveforms with external HSYNC and VSYNC

Figure 754: Waveforms with external HSYNC and VSYNC. The diagram shows two waveforms: VSYNC (vertical sync) and HSYNC (horizontal sync). VSYNC is a periodic pulse. HSYNC is a series of pulses. Labels indicate 'Display refresh duration' and 'Line duration'.

HSYNC acts as line-clock and VSYNC acts as frame-clock.

External HSYNC only

With external HSYNC only, the clock generator provides to the GFXTIM, the frame-clock and the line-clock based only on HSYNC.

Figure 755. Waveforms with external HSYNC only

Figure 755: Waveforms with external HSYNC only. The diagram shows three signals over time: TE/HSYNC (a periodic square wave), FCCCounter (a sequence of numbers: 1, 0, n, n-1, n-2, n-3, n-4, ..., 2, 1, 0, n, n-1, n-2), and FCCUF (a pulse that goes high when the counter reaches 0). The 'Display refresh duration' is the time between two consecutive rising edges of TE/HSYNC. The 'Line duration' is the time between two consecutive rising edges of TE/HSYNC. The reference MSV66913V1 is shown in the bottom right.

HSYNC acts as line-clock and FCCUF acts as frame-clock.

The clock generator can be synchronized by one of the following ways:

• by software reload, setting FCCFR in GFXTIM_CGCR
• by hardware reload on an external VSYNC (or TE)

Figure 756. Active counters and signals with external HSYNC only

Figure 756: Active counters and signals with external HSYNC only. This block diagram shows two counter units. The top unit is a 'Line-clock counter' containing an 'Auto-reload' block and a '22-bit counter'. Its inputs include LCCReload (from FCCUF, VSYNC, HSYNC, or TE), SYSCK, and SWReload. Its output is 'Line-clock' (from LCCUF, FCCUF, VSYNC, HSYNC, or TE). The bottom unit is a 'Frame-clock counter' containing an 'Auto-reload' block and a '12-bit counter'. Its inputs include FCCReload (from FCCUF, VSYNC, HSYNC, or TE), LCCUF, VSYNC, HSYNC, or TE, and SWReload. Its output is 'Frame-clock' (from LCCUF, FCCUF, VSYNC, HSYNC, or TE). A legend indicates that purple highlights represent 'Selected function'. The reference MSV66914V2 is shown in the bottom right.

External VSYNC only

With external VSYNC only, the clock generator provides to the GFXTIM, the frame-clock and the line-clock based only on VSYNC.

Figure 757. Waveforms with external VSYNC only

Figure 757: Waveforms with external VSYNC only. The diagram shows three signals over time: TE/VSYNC (a periodic square wave), xCCounter (a sawtooth-like waveform that counts down from n to 0), and xCCUF (a pulse that goes high when the counter reaches 0). The 'Display refresh duration' is the time between two consecutive rising edges of TE/VSYNC. The 'Line duration' is the time between two consecutive rising edges of TE/VSYNC. The reference MSV66915V1 is shown in the bottom right.

LCCUF (line-clock counter underflow) acts as line-clock and VSYNC acts as frame-clock.

The line-clock counter generating the line-clock is reloaded on VSYNC event.

Figure 758. Active counters with external VSYNC only

The diagram shows two counter blocks. The top block is the 'Line-clock counter' containing a '22-bit counter' and an 'Auto-reload' register. It is reloaded on VSYNC (selected) and generates 'Line-clock'. The bottom block is the 'Frame-clock counter' containing a '12-bit counter' and an 'Auto-reload' register. It is reloaded on VSYNC (selected) and generates 'Frame-clock'. A legend indicates that purple highlights represent selected functions.

Block diagram showing active counters with external VSYNC only. The Line-clock counter (22-bit) is reloaded on VSYNC and generates Line-clock. The Frame-clock counter (12-bit) is reloaded on VSYNC and generates Frame-clock. Selected functions are highlighted in purple.

The line-clock counter can also act as a prescaler for the frame-clock counter to have a wider range of counting. FCCUF acts as line-clock.

Figure 759. Prescaling when external VSYNC only

This diagram is similar to Figure 758 but shows a different configuration. The 'Line-clock counter' is reloaded on VSYNC (selected) and generates 'Line-clock'. The 'Frame-clock counter' is reloaded on VSYNC (selected) and generates 'Frame-clock'. The 'LCCUF' output of the line-clock counter is connected to the 'FCCUF' input of the frame-clock counter, indicating prescaling. A legend indicates that purple highlights represent selected functions.

Block diagram showing prescaling when external VSYNC only. The Line-clock counter (22-bit) is reloaded on VSYNC and generates Line-clock. The Frame-clock counter (12-bit) is reloaded on VSYNC and generates Frame-clock. Selected functions are highlighted in purple.

External CSYNC only

With external CSYNC only, the clock generator provides to the GFXTIM, the frame-clock and the line-clock based only on CSYNC (in the following figures, CSYNC is input on TE).

Figure 760. Waveforms with external CSYNC only

The timing diagram shows the relationship between the external CSYNC signal (input on TE), the counter values (xCCCounter), and the output signal (xCCUF). The CSYNC signal is a periodic pulse. The counter values decrease from n to n-1, then reset to 0, and then continue from n to n-1. The xCCUF signal is a periodic pulse that toggles when the counter reaches n-1. The sequence of counter values shown is n, n-1, 0, n, n-1, m, n, n-1, q, n, n-1, q, n, n-1.

Timing diagram showing waveforms with external CSYNC only. The TE (CSYNC) signal is a periodic pulse. The xCCCounter shows a sequence of values (n, n-1, 0, n, n-1, m, n, n-1, q, n, n-1, q, n, n-1) corresponding to the CSYNC pulses. The xCCUF signal is a periodic pulse with a frequency related to the counter values.

The CSYNC (on TE pin in this example) acts as line-clock and LCCUF acts as frame-clock. The line-clock counter generating the frame-clock is reloaded on CSYNC event.

Figure 761. Active counters and signals with external CSYNC only

Figure 761: Active counters and signals with external CSYNC only. The diagram shows two counter blocks: 'Line-clock counter' and 'Frame-clock counter'. The Line-clock counter contains an 'Auto-reload' register and a '22-bit counter'. It has inputs for LCCReload (from FCCUF, VSYNC, HSYNC, TE), SYSCK, SWReload, and LCCUF. Its output is 'Line-clock'. The Frame-clock counter contains an 'Auto-reload' register and a '12-bit counter'. It has inputs for FCCReload (from FCCUF, VSYNC, HSYNC, TE), LCCUF, SWReload, and FCCUF. Its output is 'Frame-clock'. A legend indicates that purple highlights represent 'Selected function'.

The line-clock counter can also act as a prescaler for the frame-clock counter to have a wider range of counting. FCCUF acts as frame-clock.

Figure 762. Prescaling when external CSYNC only

Figure 762: Prescaling when external CSYNC only. This diagram is similar to Figure 761 but shows the Line-clock counter's output 'Line-clock' connected to the Frame-clock counter's 'FCCUF' input, indicating prescaling. The Frame-clock counter's 'FCCUF' input is highlighted in purple, indicating it is the selected function for the frame-clock signal.

59.3.5 Absolute timers

Absolute time

The absolute time 32-bit value can be read directly in GFXTIM_ATR (absolute time register) to provide a global time and to generate absolute time accurate event to synchronize the graphical software.

The absolute time is generated by the combination of:

• the absolute frame counter
• the absolute line counter

Absolute frame counter

The absolute frame counter is a 20-bit free running up-counter with a software controlled reset.

It can be enabled by writing 1 in AFCEN (absolute-frame counter enable) of GFXTIM_TCR (timers configuration register).

The counter is incremented at each rising edge of the frame-clock and is reset by setting FAFCR (force absolute-frame counter reset) in GFXTIM_TCR.

In case of overflow of the absolute frame counter, AFCOF (overflow flag) is set in GFXTIM_ISR (interrupt status register), and an interrupt is generated if AFCOIE (overflow interrupt enable) is set in (interrupt enable register).

A 20-bit compare register can generate an absolute-frame counter compare event when the counter value matches the compare value. When a compare event occurs, AFCC1F (compare 1 flag) is set in GFXTIM_ISR, and an interrupt is generated if AFCC1IE (compare 1 interrupt enable) is set in GFXTIM_IER.

The absolute frame counter can be disabled by writing 1 in AFCDIS (counter disable) of GFXTIM_TDR (timers disable register).

The status (enabled/disabled) can be monitored through AFCS (counter status) in GFXTIM_TSR (timers status register).

Absolute line counter

The absolute line counter is 12-bit free running-up counter with an hardware controlled reset.

It can be enabled by writing 1 in ALCEN of GFXTIM_TCR.

The counter is incremented at each rising edge of the line-clock and is reset at each rising edge of the frame-clock or setting FALCR in GFXTIM_TCR).

In case of overflow of the absolute line counter, ALCOF is set in GFXTIM_ISR, and an interrupt is generated if ALCOIE is set in GFXTIM_IER.

Two 12-bit compare registers can generate an absolute line counter compare events when the counter value matches the compare value. When a compare event occurs, ALCC1F or ALCC2F is set in GFXTIM_ISR, and an interrupt is generated if ALCC1IE or ALCC2IE is set in GFXTIM_IER.

The absolute line counter can be disabled writing 1 in ALCDIS of GFXTIM_TDR.

The status (enabled/disabled) can be monitored through ALCS in GFXTIM_TSR.

59.3.6 Relative timers

The relative timers can generate periodic events to synchronize the graphical tasks at frame level.

The relative frame counters are 12-bit down-counting auto-reload timers that are decremented at each rising edge of the frame-clock. The counter is started by writing 1 in RFCxEN (relative frame counter x enable) of GFXTIM_TCR. The starting value is automatically loaded from GFXTIM_RFCxRR (relative frame counter x reload register).

The current relative frame counter value can be read directly in GFXTIM_RFCxR.

Once the counter reaches zero, it is automatically reloaded with the value of GFXTIM_RFCxRR. RFCxRF (reload flag) is set in GFXTIM_ISR, and an interrupt is generated if RFCxRIE (interrupt enable) is set in GFXTIM_IER.

Once the reload operation occurs, the timer can be disabled automatically or continue counting if RFCxCM (continuous mode) is set in GFXTIM_TCR.

The status (enabled/disabled) can be monitored through RFCxS in GFXTIM_TSR.

The counter can be reloaded on the fly by setting FRFCRx in GFXTIM_TCR. This force reload neither stop the timer (even if RFCxCN = 0 in GFXTIM_TCR), nor set RFCxRF (reload flag) in GFXTIM_ISR.

The relative frame counter can be disabled by setting RFCxDIS (disable) in GFXTIM_TDR.

59.3.7 Tearing-effect detection

A tearing-effect line can work in one of the two configurations shown in the figure below.

Figure 763. Tearing-effect configurations

Timing diagram showing two configurations for tearing-effect detection. The top waveform, labeled 'TE (VSYNC)', shows a single pulse. The bottom waveform, labeled 'TE (VSYNC + HSYNC)', shows a pulse followed by several smaller pulses. A horizontal double-headed arrow at the top indicates the 'Display refresh duration'. A horizontal double-headed arrow in the middle of the bottom waveform indicates the 'Line duration'. The diagram is labeled 'MSv66921V1' in the bottom right corner.

A tearing-effect event can be generated on rising or falling edge depending on TEPOL (tearing-effect polarity) in GFXTIM_CR.

When a tearing-effect event is detected, TEF (tearing-event flag) is set in GFXTIM_ISR, and an interrupt is generated if TEIE (interrupt enable) is set in GFXTIM_IER.

59.3.8 Event generator

The event generator can combine timer events into complex events. Up to four combined events can be generated.

The events can be used for:

• interrupt generation
• watchdog clocking
• external trigger generation

A complex event is a combination between a frame event and a line event.

Once a frame event occurs, the GFXTIM waits for the line event to occur before generating the complex event.

The frame event is selected by the corresponding FESx (frame event selection x) in GFXTIM_EVSR (events selection y register). The line event is selected by the corresponding LESx in GFXTIM_EVSR.

The complex event generation is enabled by setting the corresponding EVxEN (event x enable) in GFXTIM_EVCR (event control register).

It is recommended to disable the event generation prior to any event configuration to avoid spurious complex event generation

When a complex event occurs, the corresponding EVxF (event x flag) is set in GFXTIM_ISR, and an interrupt is generated if EVxIE (event x interrupt enable) is set in GFXTIM_IER.

Each of the events can be connected to another peripherals (such as DMA) to generate hardware triggers.

59.3.9 Watchdog timer

The watchdog timer is a 16-bit auto-reload down-counter with a programmable clock source.

Figure 764. Watchdog timer

The diagram shows a 'Watchdog' block containing three stacked sub-blocks: 'Auto-reload', '16-bit counter', and 'Pre-alarm'. On the left, a 'Reload' input with a software icon points to the 'Auto-reload' block. Below it, a list of clock sources (Line-clock, Frame-clock, HSYNC, VSYNC, TE, EV1, EV2, EV3, EV4) is grouped by a bracket pointing to the '16-bit counter' block. On the right, the '16-bit counter' block has an output labeled 'ALRM' with a waveform icon, and the 'Pre-alarm' block has an output labeled 'PALRM' with a waveform icon. The bottom right corner of the diagram is labeled 'MSV66922V2'.

Block diagram of the Watchdog timer. The Watchdog block contains three sub-components: Auto-reload, 16-bit counter, and Pre-alarm. Inputs include Reload (software), Line-clock, Frame-clock, HSYNC, VSYNC, TE, EV1, EV2, EV3, and EV4. Outputs include ALRM and PALRM. The diagram is labeled MSV66922V2.

Clock source

The watchdog clock source can be selected through WDGCS (clock source) in GTXTIM_WDGTCR (watchdog timer configuration register), between one of the following:

• line-clock
• frame-clock
• HSYNC
• VSYNC
• TE
• event 1
• event 2
• event 3
• event 4

Startup

The watchdog is started by setting WDGEN in GFXTIM_WDGTCR and stops automatically when reaching 0.

On start, the watchdog counter is automatically loaded with the auto-reload value programmed in GFXTIM_WDGRR (watchdog reload register).

The current watchdog value can be read through GFXTIM_WDGCR.

Auto-reload

The auto-reload can be forced in one of the following ways:

• by software, setting FWDGR (force watchdog reload) in GTXTIM_WDGTCR (watchdog timer configuration register)
• by hardware through an external trigger (gfxtim_wrl0 signal)

The polarity of the trigger is configured by WDGHRC (watchdog hardware reload configuration) in GFXTIM_WDGTCR.

Event and interrupt generation

The watchdog can generate two events:

• an alarm when the watchdog down-counter reaches 0
The watchdog counter is automatically stopped, and WDGAF (alarm flag) is set in GFXTIM_ISR. An interrupt is generated if WDGAIIE (alarm interrupt enable) is set in GFXTIM_IER.
• a pre-alarm when the watchdog counter matches the pre-alarm register value in GFXTIM_WDGPAR (watchdog pre-alarm register)
WDGPF (pre-alarm flag) is set in GFXTIM_ISR, and an interrupt is generated if WDGPIE (pre-alarm interrupt enable) is set in GFXTIM_IER.

59.4 GFXTIM interrupts

An interrupt can be produced on the following events:

• absolute frame counter compare event
• absolute frame counter overflow
• absolute line counter compare events
• absolute line counter overflow
• relative frame counter reload events
• external tearing effect
• combined events
• watchdog alarm event
• watchdog pre-alarm event

Separate interrupt enable bits are available for flexibility.

Table 620. Graphic timer interrupt requests

Interrupt acronym	Interrupt event	Event flag	Enable control bit	Interrupt clear method
GFXTIM	Absolute frame counter overflow	AFCOF	AFCOIE	write 1 in CAFCOF
	Absolute frame counter compare 1	AFCC1F	AFCC1IE	write 1 in CAFCC1F
	Absolute line counter overflow	ALCOF	ALCOIE	write 1 in CALCOF
	Absolute line counter compare 1	ALCC1F	ALCC1IE	write 1 in CALCC1F
	Absolute line counter compare 2	ALCC2F	ALCC2IE	write 1 in CALCC2F
	Relative frame counter 1 reload	RFC1RF	RFC1RIE	write 1 in CRFC1RF
	Relative frame counter 2 reload	RFC2RF	RFC2RIE	write 1 in CRFC2RF
	External tearing effect	TEF	TEIE	write 1 in CTEF
	Event 1	EV1F	EV1IE	write 1 in CEV1F
	Event 2	EV2F	EV2IE	write 1 in CEV2F
	Event 3	EV3F	EV3IE	write 1 in CEV3F
	Event 4	EV4F	EV4IE	write 1 in CEV4F

Table 620. Graphic timer interrupt requests (continued)

Interrupt acronym	Interrupt event	Event flag	Enable control bit	Interrupt clear method
GFXTIM_WDG	Watchdog alarm	WDGAF	WDGAIE	write 1 in CWDGAF
GFXTIM_WDG	Watchdog pre-alarm	WDGPF	WDGPIE	write 1 in CWDGPF

59.5 GFXTIM registers

59.5.1 GFXTIM configuration register (GFXTIM_CR)

Address offset: 0x000

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	LCCOE	FCCOE
														rw	rw
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	Res.	Res.	SYNCS[1:0]	Res.	Res.	Res.	TEPOL	Res.	Res.	Res.	TES[1:0]
						rw	rw			rw				rw	rw

Bits 31:18 Reserved, must be kept at reset value.

Bit 17 LCCOE : Line-clock calibration output enable

This bit enables the line-clock output.

0: Line-clock output disabled

1: Line-clock output enabled

Bit 16 FCCOE : Frame-clock calibration output enable

This bit enables the frame-clock output.

0: Frame-clock output disabled

1: Frame-clock output enabled

Bits 15:10 Reserved, must be kept at reset value.

Bits 9:8 SYNCS[1:0] : Synchronization source

This bitfield selects the synchronization signals (HSYNC and VSYNC) sources.

00: gfxtim_hsync[0] and gfxtim_vsync[0] selected

01: gfxtim_hsync[1] and gfxtim_vsync[1] selected

10: gfxtim_hsync[2] and gfxtim_vsync[2] selected

11: gfxtim_hsync[3] and gfxtim_vsync[3] selected

Bits 7:5 Reserved, must be kept at reset value.

Bit 4 TEPOL : Tearing--effect polarity

This bit selects the tearing-effect polarity.

0: Tearing effect active on rising edge

1: Tearing effect active on falling edge

Bits 3:2 Reserved, must be kept at reset value.

Bits 1:0 TES[1:0] : Tearing source

This bitfield selects the tearing-effect source.

00: TE input pad selected

01: gfxtim_ite selected

10: HSYNC input selected by SYNCS[1:0]

11: VSYNC input selected by SYNCS[1:0]

59.5.2 GFXTIM clock generator configuration register (GFXTIM_CGCR)

Address offset: 0x004

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	FCCHRS[2:0]			Res.	Res.	Res.	FCCFR	Res.	FCCCS[2:0]			Res.	FCS[2:0]
	rw	rw	rw				w		rw	rw	rw		rw	rw	rw
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	LCCHRS[2:0]			Res.	Res.	Res.	LCCFR	Res.	Res.	Res.	LCCCS	Res.	LCS[2:0]
	rw	rw	rw				w				rw		rw	rw	rw

Bit 31 Reserved, must be kept at reset value.

Bits 30:28 FCCHRS[2:0] : Frame-clock counter hardware reload source

This bitfield configures the hardware reload source for the frame-clock counter.

000: No hardware reload

001: Line- clock counter underflow

010: HSYNC rising edge

011: HSYNC falling edge

100: VSYNC rising edge

101: VSYNC falling edge

110: TE rising edge

111: TE falling edge

Bits 27:25 Reserved, must be kept at reset value.

Bit 24 FCCFR : Frame-clock counter force reload

This bit forces frame-clock counter reload

0: No effect

1: Frame-clock counter reload forced

Bit 23 Reserved, must be kept at reset value.

Bits 22:20 FCCCS[2:0] : Frame-clock counter clock source

This bitfield configures the clock source for the frame-clock counter.

000: Frame-clock counter disabled

001: Line-clock counter underflow

010: HSYNC rising edge

011: HSYNC falling edge

100: VSYNC rising edge

101: VSYNC falling edge

110: TE rising edge

111: TE falling edge

Bit 19 Reserved, must be kept at reset value.

Bits 18:16 FCS[2:0] : Frame-clock source

This bitfield configures the frame-clock source.

000: Line-clock counter underflow

001: Frame-clock counter underflow

010: HSYNC rising edge

011: HSYNC falling edge

100: VSYNC rising edge

101: VSYNC falling edge

110: TE rising edge

111: TE falling edge

Bit 15 Reserved, must be kept at reset value.

Bits 14:12 LCCHRS[2:0] : Line-clock counter hardware reload source

This bitfield configures the hardware reload source for the line-clock counter.

000: No hardware reload

001: Frame-clock counter underflow

010: HSYNC rising edge

011: HSYNC falling edge

100: VSYNC rising edge

101: VSYNC falling edge

110: TE rising edge

111: TE falling edge

Bits 11:9 Reserved, must be kept at reset value.

Bit 8 LCCFR : Line-clock counter force reload

This bit forces line-clock counter reload.

0: No effect

1: Line-clock counter reload forced

Bits 7:5 Reserved, must be kept at reset value.

Bit 4 LCCCS : Line-clock counter clock source

This bit configures the clock source for the line-clock counter.

0: Line-clock counter disabled

1: System clock selected

Bit 3 Reserved, must be kept at reset value.

Bits 2:0 LCS[2:0] : Line-clock source

This bitfield configures the line-clock source.

000: Line-clock counter underflow

001: Frame-clock counter underflow

010: HSYNC rising edge

011: HSYNC falling edge

100: VSYNC rising edge

101: VSYNC falling edge

110: TE rising edge

111: TE falling edge

59.5.3 GFXTIM timers configuration register (GFXTIM_TCR)

Address offset: 0x008

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	FRFC2R	RFC2CM	RFC2EN	Res.	FRFC1R	RFC1CM	RFC1EN
									w	rw	w		w	rw	w
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	FALCR	ALCEN	Res.	Res.	FAFCR	AFCE
										w	w			w	w

Bits 31:23 Reserved, must be kept at reset value.

Bit 22 FRFC2R : Force relative frame counter 2 reload

This bit forces the reload of the relative frame counter 2.

0: No effect

1: Relative frame counter 2 reload forced

Bit 21 RFC2CM : Relative frame counter 2 continuous mode

This bit enables the continuous mode of the relative frame counter 2.

0: Relative frame counter 2 is one shot.

1: Relative frame counter 2 is in continuous mode.

Bit 20 RFC2EN : Relative frame counter 2 enable

This bit enables the relative frame counter 2.

0: No effect

1: Relative frame counter 2 enabled

Bit 19 Reserved, must be kept at reset value.

Bit 18 FRFC1R : Force relative frame counter 1 reload

This bit forces the reload of the relative frame counter 1.

0: No effect

1: Relative frame counter 1 reload forced

Bit 17 RFC1CM : Relative frame counter 1 continuous mode

This bit enables the continuous mode of the relative frame counter 1.

0: Relative frame counter 1 is one shot.

1: Relative frame counter 1 is in continuous mode.

Bit 16 RFC1EN : Relative frame counter 1 enable

This bit enables the relative frame counter 1.

0: No effect

1: Relative frame counter enabled

Bits 15:6 Reserved, must be kept at reset value.

Bit 5 FALCR : Force absolute line counter reset

This bit forces the reset of the absolute line counter.

0: No effect

1: Absolute line counter reset forced

Bit 4 ALCEN : Absolute line counter enable

This bit enables the absolute line counter.

0: No effect

1: Absolute line counter enabled

Bits 3:2 Reserved, must be kept at reset value.

Bit 1 FAFCR : Force absolute frame counter reset

This bit forces the reset of the absolute frame counter.

0: No effect

1: Absolute frame counter reset forced

Bit 0 AFCEN : Absolute frame counter enable

This bit enables the absolute frame counter.

0: No effect

1: Absolute frame counter enabled

59.5.4 GFXTIM timers disable register (GFXTIM_TDR)

Address offset: 0x00C

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	RFC2DIS	Res.	Res.	Res.	RFC1DIS
											w				w
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	ALCDIS	Res.	Res.	Res.	AFCDIS
											w				w

Bits 31:21 Reserved, must be kept at reset value.

Bit 20 RFC2DIS : Relative frame counter 2 disable

This bit disables the relative frame counter 2.

0: No effect

1: Relative frame counter 2 disabled

Bits 19:17 Reserved, must be kept at reset value.

Bit 16 RFC1DIS : Relative frame counter 1 disable

This bit disables the relative frame counter 1.

0: No effect

1: Relative frame counter 1 disabled

Bits 15:5 Reserved, must be kept at reset value.

Bit 4 ALCDIS : Absolute line counter disable

This bit disables the absolute line counter.

0: No effect

1: Absolute line counter disabled

Bits 3:1 Reserved, must be kept at reset value.

Bit 0 AFCDIS : Absolute frame counter disable
This bit disables the absolute frame counter.
0: No effect
1: Absolute frame counter disabled

59.5.5 GFXTIM events control register (GFXTIM_EVCR)

Address offset: 0x010

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	EV4EN	EV3EN	EV2EN	EV1EN
												rw	rw	rw	rw

Bits 31:4 Reserved, must be kept at reset value.

Bit 3 EV4EN : Event 4 enable
This bit enables the complex event 4 generation.
0: Event 4 generation disabled
1: Event 4 generation enabled
Bit 2 EV3EN : Event 3 enable
This bit enables the complex event 3 generation.
0: Event 3 generation disabled
1: Event 3 generation enabled
Bit 1 EV2EN : Event 2 enable
This bit enables the complex event 2 generation.
0: Event 2 generation disabled
1: Event 2 generation enabled
Bit 0 EV1EN : Event 1 enable
This bit enables the complex event 1 generation.
0: Event 1 generation disabled
1: Event 1 generation enabled

59.5.6 GFXTIM events selection register (GFXTIM_EVSR)

Address offset: 0x014

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	FES4[2:0]		Res.	LES4[2:0]		Res.	FES3[2:0]		Res.	LES3[2:0]
	rw	rw	rw		rw	rw	rw		rw	rw	rw		rw	rw	rw
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	FES2[2:0]		Res.	LES2[2:0]		Res.	FES1[2:0]		Res.	LES1[2:0]
	rw	rw	rw		rw	rw	rw		rw	rw	rw		rw	rw	rw

Bit 31 Reserved, must be kept at reset value.

Bits 30:28 FES4[2:0] : Frame-event selection 4

This bitfield defines the frame-event selection for complex event 4 generation.

000: No frame event

001: Absolute frame counter overflow

010: Absolute frame counter compare

100: Relative frame counter 1 reload

101: Relative frame counter 2 reload

Others: Reserved

Bit 27 Reserved, must be kept at reset value.

Bits 26:24 LES4[2:0] : Line-event selection 4

This bitfield defines the line-event selection for complex event 4 generation.

000: No line event

001: Absolute line counter overflow

010: Tearing effect

100: Absolute line counter 1 compare

101: Absolute line counter 2 compare

Others: Reserved

Bit 23 Reserved, must be kept at reset value.

Bits 22:20 FES3[2:0] : Frame-event selection 3

This bitfield defines the frame-event selection for complex event 3 generation.

000: No frame event

001: Absolute frame counter overflow

010: Absolute frame counter compare

100: Relative frame counter 1 reload

101: Relative frame counter 2 reload

Others: Reserved

Bit 19 Reserved, must be kept at reset value.

Bits 18:16 LES3[2:0] : Line-event selection 3

This bitfield defines the line-event selection for complex event 3 generation.

000: No line event

001: Absolute line counter overflow

010: Tearing effect

100: Absolute line counter 1 compare

101: Absolute line counter 2 compare

Others: Reserved

Bit 15 Reserved, must be kept at reset value.

Bits 14:12 FES2[2:0] : Frame-event selection 2

This bitfield defines the frame-event selection for complex event 2 generation.

000: No frame event

001: Absolute frame counter overflow

010: Absolute frame counter compare

100: Relative frame counter 1 reload

101: Relative frame counter 2 reload

Others: Reserved

Bit 11 Reserved, must be kept at reset value.

Bits 10:8 LES2[2:0] : Line-event selection 2

This bitfield defines the line-event selection for complex event 2 generation.

000: No line event

001: Absolute line counter overflow

010: Tearing effect

100: Absolute line counter 1 compare

101: Absolute line counter 2 compare

Others: Reserved

Bit 7 Reserved, must be kept at reset value.

Bits 6:4 FES1[2:0] : Frame-event selection 1

This bitfield defines the frame-event selection for complex event 1 generation.

000: No frame event

001: Absolute frame counter overflow

010: Absolute frame counter compare

100: Relative frame counter 1 reload

101: Relative frame counter 2 reload

Others: Reserved

Bit 3 Reserved, must be kept at reset value.

Bits 2:0 LES1[2:0] : Line-event selection 1

This bitfield defines the line-event selection for complex event 1 generation.

000: No line event

001: Absolute line counter overflow

010: Tearing effect

100: Absolute line counter 1 compare

101: Absolute line counter 2 compare

Others: Reserved

59.5.7 GFXTIM watchdog timer configuration register (GFXTIM_WDGTCR)

Address offset: 0x020

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	FWDG R
															w
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	WDGCS[3:0]				Res.	Res.	WDGHRC[1:0]		Res.	WDGS	WDGDI S	WDGE N
				rw	rw	rw	rw			rw	rw		r	w	w

Bits 31:17 Reserved, must be kept at reset value.

Bit 16 FWDGR : Force watchdog reload

This bit forces the reload of the graphic watchdog.

0: nNo effect

1: Graphic watchdog reload forced

Bits 15:12 Reserved, must be kept at reset value.

Bits 11:8 WDGCS[3:0] : Watchdog clock source

This bitfield selects the watchdog clock source.

0000: Line-clock

0001: Frame-clock

0010: HSYNC rising edge

0011: HSYNC falling edge

0100: VSYNC rising edge

0101: VSYNC falling edge

0110: TE rising edge

0111: TE falling edge

1000: Event 1

1001: Event 2

1010: Event 3

1011: Event 4

Others: Reserved

Bits 7:6 Reserved, must be kept at reset value.

Bits 5:4 WDGHRC[1:0] : Watchdog hardware reload configuration

This bitfield configures the watchdog hardware reload.

00: Watchdog hardware reload disabled

01: Watchdog reloaded a rising edge of gfxtim_wrld

10: Watchdog reloaded a falling edge of gfxtim_wrld

11: Reserved

Bit 3 Reserved, must be kept at reset value.

Bit 2 WDGS : Watchdog status

This bit returns the status of the graphic watchdog.

0: Graphic watchdog disabled

1: Graphic watchdog enabled

Bit 1 WDGDIS : Watchdog disable

This bit disables the graphic watchdog.

0: No effect

1: Graphic watchdog disabled

Bit 0 WDGEN : Watchdog enable

This bit enables the graphic watchdog.

0: No effect

1: Graphic watchdog enabled

59.5.8 GFXTIM interrupt status register (GFXTIM_ISR)

Address offset: 0x030

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	WDGPF	WDGAF	Res.	Res.	Res.	Res.	EV4F	EV3F	EV2F	EV1F
						r	r					r	r	r	r
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	RFC2RF	RFC1RF	Res.	Res.	ALCC2F	ALCC1F	Res.	Res.	Res.	AFCC1F	Res.	TEF	ALCOF	AFCOF
		r	r			r	r				r		r	r	r

Bits 31:26 Reserved, must be kept at reset value.

Bit 25 WDGPF : Watchdog pre-alarm flag

This bit indicates that a graphic watchdog pre-alarm occurred.

0: No graphic watchdog pre-alarm occurred.

1: A graphic watchdog pre-alarm occurred.

Bit 24 WDGAF : Watchdog alarm flag

This bit indicates that a graphic watchdog alarm occurred.

0: No graphic watchdog alarm occurred.

1: A graphic watchdog alarm occurred.

Bits 23:20 Reserved, must be kept at reset value.

Bit 19 EV4F : Event 4 flag

This bit indicates a complex event 4 occurred.

0: No complex event 4 occurred.

1: A complex event 4 occurred.

Bit 18 EV3F : Event 3 flag

This bit indicates a complex event 3 occurred.

0: No complex event 3 occurred.

1: A complex event 3 occurred.

Bit 17 EV2F : Event 2 flag

This bit indicates a complex event 2 occurred.

0: No complex event 2 occurred.

1: A complex event 2 occurred.

Bit 16 EV1F : Event 1 flag

This bit indicates a complex event 1 occurred.

0: No complex event 1 occurred.

1: Complex event 1 occurred.

Bits 15:14 Reserved, must be kept at reset value.

Bit 13 RFC2RF : Relative frame counter 2 reload flag

This bit indicates relative frame counter 2 has been reloaded.

0: No reload occurred on relative frame counter 2.

1: A reload on relative frame counter 2 occurred.

Bit 12 RFC1RF : Relative frame counter 1 reload flag

This bit indicates relative frame counter 1 has been reloaded.

0: No reload occurred on relative frame counter 1.

1: A reload on relative frame counter 1 occurred.

Bits 11:10 Reserved, must be kept at reset value.

Bit 9 ALCC2F : Absolute line counter compare 2 flag

This bit indicates match on compare 2 of the absolute line counter.

0: No match occurred on compare 2 of the absolute line counter.

1: A match on compare 2 of the absolute line counter occurred.

Bit 8 ALCC1F : Absolute line counter compare 1 flag

This bit indicates match on compare 1 of the absolute line counter.

0: No match occurred on compare 1 of the absolute line counter.

1: A match on compare 1 of the absolute line counter occurred.

Bits 7:5 Reserved, must be kept at reset value.

Bit 4 AFCC1F : Absolute frame counter compare 1 flag

This bit indicates match on compare 1 of the absolute frame counter.

0: No match occurred on compare 1 of the absolute frame counter.

1: A match on compare 1 of the absolute frame counter occurred.

Bit 3 Reserved, must be kept at reset value.

Bit 2 TEF : Tearing-effect flag

This bit indicates a tearing effect event occurred.

0: No tearing effect occurred.

1: A tearing effect occurred.

Bit 1 ALCOF : Absolute line counter overflow flag

This bit indicates an overflow occurred on the absolute line counter.

0: No overflow occurred on the absolute line counter.

1: A overflow on the absolute line counter occurred.

Bit 0 AFCOF : absolute frame counter overflow flag

This bit indicates an overflow occurred on the absolute frame counter.

0: No overflow occurred on the absolute frame counter.

1: An overflow on the absolute frame counter occurred.

59.5.9 GFXTIM interrupt clear register (GFXTIM_ICR)

Address offset: 0x034

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	CWDG PF	CWDG AF	Res.	Res.	Res.	Res.	CEV4F	CEV3F	CEV2F	CEV1F
						w	w					w	w	w	w
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	CRFC2 RF	CRFC1 RF	Res.	Res.	CALCC 2F	CALCC 1F	Res.	Res.	Res.	CAFCC 1F	Res.	CTEF	CALCO F	CAFCO F
		w	w			w	w				w		w	w	w

Bits 31:26 Reserved, must be kept at reset value.

Bit 25 CWDGPF : Clear watchdog pre-alarm flag
This bit clears WDGPF in GXFXTIM_ISR.
0: No effect
1: WDGPF cleared
Bit 24 CWDGAF : Clear watchdog alarm flag
This bit clears WDGAF in GXFXTIM_ISR.
0: No effect
1: WDGAF cleared
Bits 23:20 Reserved, must be kept at reset value.
Bit 19 CEV4F : Clear event 4 flag
This bit clears EV4F in GXFXTIM_ISR.
0: No effect
1: EV4F cleared
Bit 18 CEV3F : Clear event 3 flag
This bit clears EV3F in GXFXTIM_ISR.
0: No effect
1: EV3F cleared
Bit 17 CEV2F : Clear event 2 flag
This bit clears EV2F in GXFXTIM_ISR.
0: No effect
1: EV2F cleared
Bit 16 CEV1F : Clear event 1 flag
This bit EV1F in GXFXTIM_ISR.
0: No effect
1: EV1F cleared
Bits 15:14 Reserved, must be kept at reset value.
Bit 13 CRFC2RF : Clear relative frame counter 2 reload flag
This bit clears RFC2RF in GXFXTIM_ISR.
0: No effect
1: RFC2RF cleared
Bit 12 CRFC1RF : Clear relative frame counter 1 reload flag
This bit clears RFC1RF in GXTIM_ISR.
0: No effect
1: RFC1RF cleared
Bits 11:10 Reserved, must be kept at reset value.
Bit 9 CALCC2F : Clear absolute line counter compare 2 flag
This bit clears ALCC2F in GXTIM_ISR.
0: No effect
1: ALCC2F cleared
Bit 8 CALCC1F : Clear absolute line counter compare 1 flag
This bit clears ALCC1F in GXTIM_ISR.
0: No effect
1: ALCC1F cleared
Bits 7:5 Reserved, must be kept at reset value.

Bit 4 CAFCC1F : Clear absolute frame counter compare 1 flag

This bit clears AFCC1F in GXTIM_ISR.

0: No effect

1: AFCC1F cleared

Bit 3 Reserved, must be kept at reset value.

Bit 2 CTEF : Clear tearing-effect flag

This bit clears TEF in GXTIM_ISR.

0: No effect

1: TEF cleared

Bit 1 CALCOF : Clear absolute line counter overflow flag

This bit clears ALCOF in GXTIM_ISR.

0: No effect

1: ALCOF cleared

Bit 0 CAFCOF : Clear absolute frame counter overflow flag

This bit clears AFCOF in GXTIM_ISR.

0: No effect

1: AFCOF cleared

59.5.10 GFXTIM interrupt enable register (GFXTIM_IER)

Address offset: 0x038

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	WDGPI E	WDGAI E	Res.	Res.	Res.	Res.	EV4IE	EV3IE	EV2IE	EV1IE
						rw	rw					rw	rw	rw	rw
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	RFC2R IE	RFC1R IE	Res.	Res.	ALCC2I E	ALCC1I E	Res.	Res.	Res.	AFCC1 IE	Res.	TEIE	ALCOI E	AFCOI E
		rw	rw			rw	rw				rw		rw	rw	rw

Bits 31:26 Reserved, must be kept at reset value.

Bit 25 WDGPIE : Watchdog pre-alarm interrupt enable

This bit enables the watchdog pre-alarm interrupt generation.

0: Watchdog pre-alarm interrupt disabled

1: Watchdog pre-alarm interrupt enabled

Bit 24 WDGAIE : Watchdog alarm interrupt enable

This bit enables the watchdog alarm interrupt generation.

0: Watchdog alarm interrupt disabled

1: Watchdog alarm interrupt enabled

Bits 23:20 Reserved, must be kept at reset value.

Bit 19 EV4IE : Event 4 interrupt enable

This bit enables the complex event 4 interrupt generation.

0: Event 4 interrupt disabled

1: Event 4 interrupt enabled

Bit 18 EV3IE : Event 3 interrupt enable

This bit enables the complex event 3 interrupt generation.

0: Event 3 interrupt disabled

1: Event 3 interrupt enabled

Bit 17 EV2IE : Event 2 interrupt enable

This bit enables the complex event 2 interrupt generation.

0: Event 2 interrupt disabled

1: Event 2 interrupt enabled

Bit 16 EV1IE : Event 1 interrupt enable

This bit enables the complex event 1 interrupt generation.

0: Event 1 interrupt disabled

1: Event 1 interrupt enabled

Bits 15:14 Reserved, must be kept at reset value.

Bit 13 RFC2RIE : Relative frame counter 2 reload interrupt enable

This bit enables the relative frame counter 2 reload interrupt generation.

0: Relative frame counter 2 reload interrupt disabled

1: Relative frame counter 2 reload interrupt enabled

Bit 12 RFC1RIE : Relative frame counter 1 reload interrupt enable

This bit enables the relative frame counter 1 reload interrupt generation.

0: Relative frame counter 1 reload interrupt disabled

1: Relative frame counter 1 reload interrupt enabled

Bits 11:10 Reserved, must be kept at reset value.

Bit 9 ALCC2IE : Absolute line counter compare 2 interrupt enable

This bit enables the absolute line counter compare 2 interrupt generation.

0: Absolute line counter compare 2 interrupt disabled

1: Absolute line counter compare 2 interrupt enabled

Bit 8 ALCC1IE : Absolute line counter compare 1 interrupt enable

This bit enables the absolute line counter compare 1 interrupt generation.

0: Absolute line counter compare 1 interrupt disabled

1: Absolute line counter compare 1 interrupt enabled

Bits 7:5 Reserved, must be kept at reset value.

Bit 4 AFCC1IE : Absolute frame counter compare 1 interrupt enable

This bit enables the absolute frame counter compare interrupt generation.

0: Absolute frame counter compare 1 interrupt disabled

1: Absolute frame counter compare 1 interrupt enabled

Bit 3 Reserved, must be kept at reset value.

Bit 2 TEIE : Tearing-effect interrupt enable

This bit enables the Tearing Effect interrupt generation.

0: Tearing-effect interrupt disabled

1: Tearing-effect interrupt enabled

Bit 1 ALCOIE : Absolute line counter overflow interrupt enable

This bit enables the absolute line counter overflow interrupt generation.

0: Absolute line counter overflow interrupt disabled

1: Absolute line counter overflow interrupt enabled

Bit 0 AFCOE : Absolute frame counter overflow interrupt enable

This bit enables the absolute frame counter overflow interrupt generation.

0: Absolute frame counter overflow interrupt disabled

1: Absolute frame counter overflow interrupt enabled

59.5.11 GFXTIM timers status register (GFXTIM_TSR)

Address offset: 0x03C

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	RFC2S	Res.	Res.	Res.	RFC1S
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	ALCS	Res.	Res.	Res.	AFCS
											r				r

Bits 31:21 Reserved, must be kept at reset value.

Bit 20 RFC2S : Relative frame counter 2 status

This bit returns the status of the relative frame counter 2.

0: Relative frame counter 2 disabled

1: Relative frame counter 2 enabled

Bits 19:17 Reserved, must be kept at reset value.

Bit 16 RFC1S : Relative frame counter 1 status

This bit returns the status of the relative frame counter 1.

0: Relative frame counter 1 disabled

1: Relative frame counter 1 enabled

Bits 15:5 Reserved, must be kept at reset value.

Bit 4 ALCS : Absolute line counter status

This bit returns the status of the absolute line counter.

0: Absolute line counter disabled

1: Absolute line counter enabled

Bits 3:1 Reserved, must be kept at reset value.

Bit 0 AFCS : Absolute frame counter status

This bit returns the status of the absolute frame counter.

0: Absolute frame counter disabled

1: Absolute frame counter enabled

59.5.12 GFXTIM line-clock counter reload register (GFXTIM_LCCRR)

Address offset: 0x040

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	RELOAD[21:16]
										rw	rw	rw	rw	rw	rw
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
RELOAD[15:0]
rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:22 Reserved, must be kept at reset value.

Bits 21:0 RELOAD[21:0] : Reload value

Reload value of the line-clock counter.

59.5.13 GFXTIM frame-clock counter reload register (GFXTIM_FCCRR)

Address offset: 0x044

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.

15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	RELOAD[11:0]
				rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:12 Reserved, must be kept at reset value.

Bits 11:0 RELOAD[11:0] : Reload value

Reload value of the frame-clock counter.

59.5.14 GFXTIM absolute time register (GFXTIM_ATR)

Address offset: 0x050

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
FRAME[19:4]
r	r	r	r	r	r	r	r	r	r	r	r	r	r	r	r
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
FRAME[3:0]				LINE[11:0]
r	r	r	r	r	r	r	r	r	r	r	r	r	r	r	r

Bits 31:12 FRAME[19:0] : Frame number

Current value of the absolute frame counter.

Bits 11:0 LINE[11:0] : Line number

Current value of the absolute line counter.

59.5.15 GFXTIM absolute frame counter register (GFXTIM_AFCR)

Address offset: 0x054

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	FRAME[19:16]
												rw	rw	rw	rw
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
FRAME[15:0]
rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:20 Reserved, must be kept at reset value.

Bits 19:0 FRAME[19:0] : Frame number

Current value of the absolute frame counter.

Note: This bitfield can only be written when the absolute frame counter is disabled.

59.5.16 GFXTIM absolute line counter register (GFXTIM_ALCR)

Address offset: 0x058

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.

15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	LINE[11:0]
				rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:12 Reserved, must be kept at reset value.

Bits 11:0 LINE[11:0] : Line number

Current value of the absolute line counter.

Note: This bitfield can only be written when the absolute line counter is disabled.

59.5.17 GFXTIM absolute frame counter compare 1 register (GFXTIM_AFCC1R)

Address offset: 0x060

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	FRAME[19:16]
												rw	rw	rw	rw
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
FRAME[15:0]
rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:20 Reserved, must be kept at reset value.

Bits 19:0 FRAME[19:0] : Frame number
Compare 1 value for the absolute frame counter.

59.5.18 GFXTIM absolute line counter compare 1 register (GFXTIM_ALCC1R)

Address offset: 0x070

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.

15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	LINE[11:0]
				rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:12 Reserved, must be kept at reset value.

Bits 11:0 LINE[11:0] : Line number
Compare value 1 for the absolute line counter.

59.5.19 GFXTIM absolute line counter compare 2 register (GFXTIM_ALCC2R)

Address offset: 0x074

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.

15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	LINE[11:0]
				rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:12 Reserved, must be kept at reset value.

Bits 11:0 LINE[11:0] : Line number

Compare value 2 for the absolute line counter.

59.5.20 GFXTIM relative frame counter 1 register (GFXTIM_RFC1R)

Address offset: 0x080

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	FRAME[11:0]
				r	r	r	r	r	r	r	r	r	r	r	r

Bits 31:12 Reserved, must be kept at reset value.

Bits 11:0 FRAME[11:0] : Frame number

Current value of the relative frame counter 1.

59.5.21 GFXTIM relative frame counter 1 reload register (GFXTIM_RFC1RR)

Address offset: 0x084

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	FRAME[11:0]
				rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:12 Reserved, must be kept at reset value.

Bits 11:0 FRAME[11:0] : Frame reload value

Reload value for the relative frame counter 1.

59.5.22 GFXTIM relative frame counter 2 register (GFXTIM_RFC2R)

Address offset: 0x088

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	FRAME[11:0]
				r	r	r	r	r	r	r	r	r	r	r	r

Bits 31:12 Reserved, must be kept at reset value.

Bits 11:0 FRAME[11:0] : Frame number

Current value of the relative frame counter 2.

59.5.23 GFXTIM relative frame counter 2 reload register (GFXTIM_RFC2RR)

Address offset: 0x08C

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Res.	Res.	Res.	Res.	FRAME[11:0]
				nw	nw	nw	nw	nw	nw	nw	nw	nw	nw	nw	nw

Bits 31:12 Reserved, must be kept at reset value.

Bits 11:0 FRAME[11:0] : Frame reload value

Reload value for the relative frame counter 2.

59.5.24 GFXTIM watchdog counter register (GFXTIM_WDGCR)

Address offset: 0x0A0

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
VALUE[15:0]
r	r	r	r	r	r	r	r	r	r	r	r	r	r	r	r

Bits 31:16 Reserved, must be kept at reset value.

Bits 15:0 VALUE[15:0] : Value
Current value of the watchdog counter.

59.5.25 GFXTIM watchdog reload register (GFXTIM_WDGRR)

Address offset: 0x0A4

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
RELOAD[15:0]
rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:16 Reserved, must be kept at reset value.

Bits 15:0 RELOAD[15:0] : Reload value
Reload value of the watchdog counter.

59.5.26 GFXTIM watchdog pre-alarm register (GFXTIM_WDGPAR)

Address offset: 0x0A8

Reset value: 0x0000 0000

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
PREALARM[15:0]
rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw

Bits 31:16 Reserved, must be kept at reset value.

Bits 15:0 PREALARM[15:0] : Pre-alarm value
Pre-alarm value of the watchdog counter.

59.5.27 GFXTIM register map

Table 621. GFXTIM register map and reset values

Offset	Register name	31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
0x000	GFXTIM_CR	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	Res.	LCCOE	FCCOE	Res.	Res.	Res.	Res.	Res.	Res.	SYNCS [1:0]		Res.	Res.	Res.	Res.	TEPOL	Res.	TES [1:0]
0x000	GFXTIM_CR															0	0							0	0					0		0	0
0x004	GFXTIM_CGCR	Res.	FCCHRS [2:0]			Res.	Res.	Res.	FCCFR	Res.	FCCCS [2:0]			Res.	FCS [2:0]	Res.	LCCHRS [2:0]			Res.	Res.	Res.	LCCFR	Res.	Res.	Res.	LCCCS	TEPOL	Res.	LCS[2:0]
0x004	GFXTIM_CGCR		0	0	0				0		0	0	0		0	0	0		0	0	0				0				0			0	0	0

Table 621. GFXTIM register map and reset values (continued)

Offset	Register name	31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
0x008	GFXTIM_TCR	Res	Res	Res	Res	Res	Res	Res	Res	Res	o	o	o	Res	o	o	o	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	o	o	Res	Res	Res	o	o
0x008	Reset value
0x00C	GFXTIM_TDR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	o	Res	Res	Res	o	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	o	o	Res	Res	Res	o	o
0x00C	Reset value
0x010	GFXTIM_EVCR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	o	o	o	o	o
0x010	Reset value
0x014	GFXTIM_EVSR	Res	FES4[2:0]	Res	LES4[2:0]	Res	FES3[2:0]	Res	LES3[2:0]	Res	FES2[2:0]	Res	LES2[2:0]	Res	FES1[2:0]	Res	LES1[2:0]	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res
0x014	Reset value		0 0 0		0 0 0		0 0 0		0 0 0		0 0 0		0 0 0		0 0 0		0 0 0
0x018-0x01C	Reserved	Reserved
0x020	GFXTIM_WDGTCR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	o	Res	Res	Res	Res	WDGCS[3:0]	Res	Res	Res	Res	o	o	Res	o	o	o	o
0x020	Reset value
0x024-0x02C	Reserved	Reserved
0x030	GFXTIM_ISR	Res	Res	Res	Res	Res	Res	o	o	Res	Res	Res	Res	o	o	o	o	Res	Res	o	o	Res	Res	o	o	Res	Res	Res	o	o	o	o	o	o
0x030	Reset value
0x034	GFXTIM_ICR	Res	Res	Res	Res	Res	Res	o	o	Res	Res	Res	Res	o	o	o	o	Res	Res	o	o	Res	Res	o	o	Res	Res	Res	o	o	o	o	o	o
0x034	Reset value
0x038	GFXTIM_IER	Res	Res	Res	Res	Res	Res	o	o	Res	Res	Res	Res	o	o	o	o	Res	Res	o	o	Res	Res	o	o	Res	Res	Res	o	o	o	o	o	o
0x038	Reset value
0x03C	GFXTIM_TSR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	o	Res	Res	Res	o	Res	Res	o	o	Res	Res	o	o	Res	Res	Res	o	o	o	o	o	o
0x03C	Reset value
0x040	GFXTIM_LCCRR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res
0x040	Reset value
0x044	GFXTIM_FCCRR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res
0x044	Reset value
0x048-0x04C	Reserved	Reserved
0x050	GFXTIM_ATR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res
0x050	Reset value	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
0x054	GFXTIM_AFCR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res
0x054	Reset value
0x058	GFXTIM_ALCR	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res	Res
0x058	Reset value
0x05C	Reserved	Reserved

Table 621. GFXTIM register map and reset values (continued)

Offset	Register name	31	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
0x060	GFXTIM_AFCC1R	FRAME[19:0]
0x060	Reset value		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
0x064-0x06C	Reserved	Reserved
0x070	GFXTIM_ALCC1R	LINE[11:0]
0x070	Reset value										0	0	0	0	0	0	0	0	0	0	0	0
0x074	GFXTIM_ALCC2R	LINE[11:0]
0x074	Reset value										0	0	0	0	0	0	0	0	0	0	0	0
0x078-0x07C	Reserved	Reserved
0x080	GFXTIM_RFC1R	FRAME[11:0]
0x080	Reset value										0	0	0	0	0	0	0	0	0	0	0	0
0x084	GFXTIM_RFC1RR	FRAME[11:0]
0x084	Reset value										0	0	0	0	0	0	0	0	0	0	0	0
0x088	GFXTIM_RFC2R	FRAME[11:0]
0x088	Reset value										0	0	0	0	0	0	0	0	0	0	0	0
0x08C	GFXTIM_RFC2RR	FRAME[11:0]
0x08C	Reset value										0	0	0	0	0	0	0	0	0	0	0	0
0x090-0x09C	Reserved	Reserved
0x0A0	GFXTIM_WDGCR	VALUE[15:0]
0x0A0	Reset value										0	0	0	0	0	0	0	0	0	0	0	0
0x0A4	GFXTIM_WDGRR	RELOAD[15:0]
0x0A4	Reset value										0	0	0	0	0	0	0	0	0	0	0	0
0x0A8	GFXTIM_WDGPAR	PREALARM[15:0]
0x0A8	Reset value										0	0	0	0	0	0	0	0	0	0	0	0

Refer to Section 2.3: Memory organization for the register boundary addresses.