PC87591L datasheet(326/437 Pages) NSC

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Host Controller Interface Modules (Continued)

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326

Revision 1.07

Wake-Up ACPI State Register (WK_STATE)

This is a read/write register. It always returns 0016 when read.

Location: Offset 0716

Type: R/W

Bit

Description

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)

7-6

Reserved.

Bit

76543210

Name

Reserved

Bit

Description

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

PC87591L 데이터시트(PDF) 326 Page - National Semiconductor (TI)

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