W83977ATF Datasheet, PDF (178/207 Pages) Winbond – WINBOND I/O

W83977ATF
PRELIMINARY
Bit
Name
0-7 TMR_VAL
Description
This read-only field returns the running count of the power management timer.
This is a 24-bit counter that runs off of a 3.579545 MHZ clock, and counts in
the working state. The timer is reset and then continues counting until the
CLKIN input to the chip is stopped. If the clock is restarted without an MR
reset, then the counter will resume counting from where it stopped. The
TMR_STS bit is set any time the last bit of the timer (bit 23) goes from 0 to 1
or from 1 to 0. If the TMR_EN bit is set, the setting of the TMR_STS bit will
generate an SCI interrupt.
9.3.11 Power Management 1 Timer 3 (PM1TMR3)
Register Location:
<CR60, 61> + AH System I/O Space
Default Value:
00h
Attribute:
Read only
Size:
8 bits
765
43
21
0
TMR_VAL16
TMR_VAL17
TMR_VAL18
TMR_VAL19
TMR_VAL20
TMR_VAL21
TMR_VAL22
TMR_VAL23
Bit
Name
0-7 TMR_VAL
Description
This read-only field returns the running count of the power management timer.
This is a 24-bit counter that runs off of a 3.579545 MHZ clock, and counts in
the working state. The timer is reset and then continues counting until the
CLKIN input to the chip is stopped. If the clock is restarted without an MR
reset, then the counter will resume counting from where it stopped. The
TMR_STS bit is set any time the last bit of the timer (bit 23) goes from 0 to 1
or from 1 to 0. If the TMR_EN bit is set, the setting of the TMR_STS bit will
generate an SCI interrupt.
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Publication Release Date:April 1998
Revision 0.53