
W89C840AF
-
13
-
Publication Release Date:October 2000
Revision 1.01
The W89C840AF scans for the sequence of 16 duplications address of its node ID. If the W89C840AF
detects this sequence it assertion the PMEB signal and is reflected in the Power Management Control and
Status Register (FPMCSR) and Wake-Up Control and Status Register (FWUPCS).
2. W89C840AF Power Management State and Wake-Up Operation
Operation
State
Fx
Register
Cx Register
Tx/Rx
DMA
CAPS
CAPPR
WUPFE
MGPE
PME_EN
Hard-Reset
w/
PMCSP=0,
RWUL=x
Initial default
or/from
EEPROM
Initial default
or/from
EEPROM
initial
default
fixed at 0
fixed at
00H
fixed at 0
fixed at
0
fixed at 0
Hard-Reset
w/
PMCSP=1,
RWUL=0
Initial
default
or/from
EEPROM
Initial default
or/from
EEPROM
initial
default
fixed at 1
fixed at
dcH
cleared
to 0
cleared
to 0
cleared to
0
Hard-Reset
w/
PMCSP=1,
RWUL=1
Initial
default
or/from
EEPROM
Initial default
or/from
EEPROM
initial
default
fixed at 1
fixed at
dcH
cleared to
0
set to 1
set to 1
software reset
(C00[0])
unchanged
*C38,C3c,C40,
C44,C48
unchanged
*initial
default for
other
initial
default
unchanged unchanged unchanged unchanged unchanged
to D1 state
*F04[1:0]
masked by
D1 state
*unchanged
for other
*C18[13],C18
[1] masked by
D1 state
*unchanged
for other
disable unchanged unchanged unchanged unchanged unchanged
to
state
D3(hot)
*F04[1:0]
masked by
D3(hot)
state
*unchanged
for other
*C18[13],C18
[1] masked by
D3(hot) state
*unchanged
for other
disable unchanged unchanged unchanged unchanged unchanged
D3(hot) to D0
(un-initialized)
state
initial
default or
from
EEPROM
initial default
or from
EEPROM
initial
default
equivalent
to
HardReset
equivalent
to
HardReset
equivalent
to
HardReset
equivalent
to
HardReset
equivalent
to
HardReset
The W89C840AF PCI Bus Power Management Interface Specification Rev 1.0 and Network Device
Class Power Management
Reference Specification V1.0a and ACPI Specification Rev 1.0. These three
specifications define how a PCI network device can be controlled in an Operating System Directed Power
Management (OSPM) environment.