Sleep And Wake-Up Timer Registers - Analog Devices ADuCM356 Reference Manual

Reference Manual
SLEEP AND WAKE-UP TIMER
2. Set the TMRCON register, Bit 0 to enable the timer wake-up
function.
3. Set the AFE PWRMOD register, Bits[3:1] and the SEQSLP-
LOCK register to 0xA47E5 to enable the sequencer to trigger
sleep.
4. Set the final sequence in the CON register, Bits[3:1]. If only one
sequence is used, select that sequence.
5. Write the sleep time and wake-up time to the SEQxSLEEPH,
SEQxSLEEPL, SEQxWUPH, and SEQxWUPL registers.
6. Use the SEQORDER register to configure the order in which
sequences are triggered.
7. Write 1 to the CON register, Bit 0, to enable the timer.
When Bit 0 of the CON register = 1, the timer loads the values from
the SEQxWUPH and SEQxWUPL registers and begins counting
down. When the timer reaches zero, the device wakes up and
executes sequences in the order specified in the SEQORDER reg-

SLEEP AND WAKE-UP TIMER REGISTERS

Table 180. Sleep and Wake-Up Timer Registers Summary
Address Name
0x400C0800 CON
0x400C0804 SEQORDER
0x400C0808 SEQ0WUPL
0x400C0818 SEQ1WUPL
0x400C0828 SEQ2WUPL
0x400C0838 SEQ3WUPL
0x400C080C SEQ0WUPH
0x400C081C SEQ1WUPH
0x400C082C SEQ2WUPH
0x400C083C SEQ3WUPH
0x400C0810 SEQ0SLEEPL
0x400C0820 SEQ1SLEEPL
0x400C0830 SEQ2SLEEPL
0x400C0840 SEQ3SLEEPL
0x400C0814 SEQ0SLEEPH
0x400C0824 SEQ1SLEEPH
0x400C0834 SEQ2SLEEPH
0x400C0844 SEQ3SLEEPH
0x400C0A1C TMRCON
Timer Control Register
Address: 0x400C0800, Reset: 0x0000, Name: CON
The CON register is the wake-up timer control register.
Table 181. Bit Descriptions for CON Register
Bits Bit Name Settings
[15:7] Reserved
6 MSKTRG
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Description
Timer control register
Order control register
Sequence 0 wake-up time register (LSB)
Sequence 1 wake-up time register (LSB)
Sequence 2 wake-up time register (LSB)
Sequence 3 wake-up time register (LSB)
Sequence 0 wake-up time register (MSB)
Sequence 1 wake-up time register (MSB)
Sequence 2 wake-up time register (MSB)
Sequence 3 wake-up time register (MSB)
Sequence 0 sleep time register (LSB)
Sequence 1 sleep time register (LSB)
Sequence 2 sleep time register (LSB))
Sequence 3 sleep time register (LSB)
Sequence 0 sleep time register (MSB)
Sequence 1 sleep time register (MSB)
Sequence 2 sleep time register (MSB)
Sequence 3 sleep time register (MSB)
Timer wake-up configuration register
Description
Reserved.
Mask Sequence Trigger From Sleep and Wake-Up Timer. This bit masks the sequence trigger from
the sleep and wake-up timer. When the trigger is masked, it does not go to the sequencer.
ister, Bits[1:0]. The timer loads the values from the SEQxSLEEPH
and SEQxSLEEPL registers and begins counting down again when
the sequencer is running. When the timer elapses, the ADuCM356
returns to sleep mode if the TMRCON register, Bit 0 = 1. If the AFE
PWRMOD register, Bit 3 = 1, the ADuCM356 returns to sleep mode
at the end of the last sequence.
The maximum hibernate time is 32 seconds when using the internal
32 kHz oscillator.
To calculate the code for the SEQxWUPx and SEQxSLEEPx regis-
ters, use the following equation:
Code = ClkFreq × Time
where:
Code is the code value for the SEQxWUPx register.
ClkFreq is the frequency of the internal oscillator in Hz.
Time is the required timeout duration in seconds.
ADuCM356
Reset Access
0x0000 R/W
0x0000 R/W
0xFFFF R/W
0xFFFF R/W
0xFFFF R/W
0xFFFF R/W
0x000F R/W
0x000F R/W
0x000F R/W
0x000F R/W
0xFFFF R/W
0xFFFF R/W
0xFFFF R/W
0xFFFF R/W
0x000F R/W
0x000F R/W
0x000F R/W
0x000F R/W
0x0000 R/W
Reset Access
0x0 R
0x0 R/W
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