
IP100
10.6.21 PowerMgmtCtrl
Class............................. LAN PCI Configuration Registers, Power Management
Base Address ............... PCI device configuration header start
Address Offset .............. 0x54
Default Value ................ 0x4000
Width ............................ 16 bits
PowerMgmtCtrl allows control over the power state and the power management interrupts.
BIT
BIT NAME
R/W
1..0
PowerState
R/W
Power State. PowerState indicates the current power state of the
IP100. If PowerState is set to a value other than 0x0, the IP100 will
not respond to PCI I/O or memory cycles, nor will the IP100 be able
to generate PCI bus master cycles.
BIT 1
BIT 0
0
0
0
1
1
0
1
1
7..2
Reserved
N/A
Reserved for future use.
8
PmeEn
R/W
Power Management Event Enable. When PmeEn is a logic 1, the
IP100 is allowed to report wake events on the WAKE signal. The
criteria for generating wake events is defined by the WakeEvent
register. PmeEn is loaded from the ConfigParm field of an EEPROM
during auto initialization of the IP100.
12..9
DataSelect
R/W
Data Select. DataSelect is used to select which data is to be
reported through the Data register and DataScale field.
14..13
DataScale
R
Data Scale. DataScale indicates the scaling factor to be used when
interpreting the value of the Data register. The interpretation of the
scale values is defined as follows:
DATASCALE
0x0
0x1
0x2
0x3
15
PmeStatus
R/W
Power Management Event Status. When PmeStatus is a logic 1 a
wake event has occurred. PmeStatus may be a logic 1 regardless of
the value of PmeEn. Writing a logic 1 to PmeStatus will set
PmeStatus to a logic 0. Writing a logic 0 to PmeStatus has no effect.
Copyright
2003, IC Plus Corp.
All rights reserved.
Preliminary, Specification subject to change without notice.
80/92
IP100-DS-R03
May 27, 2003
BIT DESCRIPTION
POWER STATE
D0
D1
D2
D3
SCALE FACTOR
Unknown
0.1
0.01
0.001