w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 177

• Manufacturer Part Number: w83977atf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

Register Location:
Default Value:
Attribute:
0-7
9.3.10 Power Management 1 Timer 2 (PM1TMR2)
Register Location:
Default Value:
Attribute:
Size:
Bit
TMR_VAL
Name
7
7
8 bits
8 bits
6
6
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.
<
Read only
<CR60,
00h
Read only
5
5
4
4
61> + 9H System I/O Space
> + 8H System I/O Space
3
3
2
2
1
1
-
0
0
TMR_VAL8
TMR_VAL9
TMR_VAL10
TMR_VAL11
TMR_VAL12
TMR_VAL13
TMR_VAL14
TMR_VAL15
-
Description
TMR_VAL0
TMR_VAL1
TMR_VAL2
TMR_VAL3
TMR_VAL4
TMR_VAL5
TMR_VAL6
TMR_VAL7
Publication Release Date:April 1998
W83977ATF
PRELIMINARY
Revision 0.53