pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 326

• Manufacturer Part Number: pc87591l
• Description: Lpc Mobile Embedded Controllers
• Manufacturer: National Semiconductor Corporation

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Host Controller Interface Modules
Wake-Up ACPI State Register (WK_STATE)
This is a read/write register. It always returns 00
Location: Offset 07
Type: R/W
Bit
Name
Bit
7-6
Bit
0
1
2
3
4
5
0
1
2
SMI Output Value.
0: SMI output is low (asserted)
1: SMI output is high (de-asserted)
SMI Wake-Up Output Value.
0: SMI output of the wake-up module is low (asserted)
1: SMI output of the wake-up module is high (de-asserted)
PM1 SMI Output Value.
0: SMI output of the Power Management channel 1 is low (asserted)
1: SMI output of the Power Management channel 1 is high (de-asserted)
PM2 SMI Output Value.
0: SMI output of the Power Management channel 2 is low (asserted)
1: SMI output of the Power Management channel 2 is high (de-asserted)
PWUREQ Wake-Up Output Value.
0: PWUREQ output is low (asserted)
1: PWUREQ output is high (de-asserted)
PWUREQ Wake-Up Value.
0: PWUREQ output of the wake-up module is low (asserted)
1: PWUREQ output of the wake-up module is high (de-asserted)
Reserved.
Reserved.
S1 (Request to Change to S1 State). A write of 1 to this bit indicates to the core that the host requests to
change to S1 state. The S state and transition are interpreted, as specified in the ACPI standard for S state
change requests. This bit always reads back 0.
0: Not an S1 state request
1: S1 state setting request
S2 (Request to Change to S2 State). A write of 1 to this bit indicates to the core that the host requests to
change to S2 state. The S state and transition are interpreted, as specified in the ACPI standard for S state
change requests This bit always reads back 0.
0: Not an S2 state request
1: S2 state setting request
16
7
Reserved
6
S5
5
16
(Continued)
when read.
Description
Description
326
S4
4
S3
3
S2
2
S1
1
Reserved
Revision 1.07
0