W89C841F Datasheet, PDF (45/102 Pages) Winbond – 3-IN - 1 10/100M FAST ETHERNET CONTROLLER

W89C841F/D
Fe0/FPMR1 Power Management Register 1, continued
BIT
14:13
12:9
8
7:2
1:0
ATTRIBUTE
R
R/W
Sticky bit,
R/W
R
R/W
BIT NAME
D_Scale
D_Select
PME_EN
---
PW_STS
DESCRIPTION
Data Scale
Indicates the scaling factor to be used when interpreting the
value of the PM_Data field. The value is loaded from
EEPROM.
00b = Unknown
01b = 0.1x
10b = 0.01x
11b = 0.001x
Data Select
Used to select which data is to be reported in units Watts
through the PM_Data and D_Scale fields.
0 = D0 power Consumed
1 = D1 power Consumed
3 = D3 power Consumed
4 = D0 power Dissipated
5 = D1 power Dissipated
7 = D3 power Dissipated
Others = reserved
Note: The power consumption and power dissipation of W89C841F at
different power state are:
1. D0: 0.59W
2. D1: 0.59W
3. D3: 0.52W
PME Enable
When set to 1, PMEB assertion is enabled. When reset to
0, PMEB assertion is disabled. When PME_STS and
PME_EN are set, W89C841F asserts PMEB.
This bit defaults to 0 if PMEB generation from D3cold is not
supported.
If PMEB generation from D3cold is supported, then this bit
is sticky and must be explicitly cleared by the operating
system each time it is initially loaded.
Reserved. Fixed at 0.
Power State
00b --- Indicates W89C841F at D0 power state
01b --- Indicates W89C841F at D1 power state
11b --- Indicates W89C841F at D3 (hot) power state
Writing 10b has no effect.
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Publication Release Date: October 18, 2001
Revision A3