W83877ATF Datasheet, PDF (158/191 Pages) Winbond – enhanced version from Winbonds most popular I/O chip W83877F

8.4.2 Power Management 1 Status Register 2 (PM1STS2)
Register Location:
<CR33>+1H System I/O Space
Default Value:
00h
Attribute:
Read/write
Size:
8 bits
765
43
21
0
W83877ATF
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
WAK_STS
Bit
Name
0-6 Reserved
7
WAK_STS
Description
Reserved.
This bit is set when the system is in the sleeping state and an enabled resume
event occurs. Upon setting this bit, the sleeping/working state machine will
transition the system to the working state. This bit is only set by hardware, and
is cleared by software writing a 1 to this bit position or by the sleeping/working
state machine automatically upon the expiry of the global standby timer.
Writing a 0 has no effect. Upon the WAK_STS beingcleared and all devices
being in sleeping state, the whole chip enters the sleeping state.
8.4.3 Power Management 1 Enable Register 1(PM1EN1)
Register Location:
<CR33>+2H System I/O Space
Default Value:
00h
Attribute:
Read/write
Size:
8 bits
765
43
21
0
TMR_EN
Reserved
Reserved
Reserved
GBL_EN
Reserved
Reserved
Reserved
- 154 -
Publication Release Date: April 1998
Version 0.51