PC87591L datasheet(347/437 Pages) NSC

347 / 437 page

6.0 Host-Controlled Modules and Host Interface (Continued)

Revision 1.07

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SuperI/O Conﬁguration 9 Register (SIOCF9)

Location: Index 2916

Type: R/W

SuperI/O Conﬁguration D Register (SIOCFD)

This is a battery-backed register.

Location: Index 2D16

Type: R/W

Bit

43210

Name

Reserved

Reset

00001

Bit

Description

7-0

Reserved.

Bit

76543210

Name

Reserved

Power

Supply Off

Power

Button

Mode

Reset

00000000

Bit

Description

Power Button Mode. This is a R/W bit. The value of this bit is available to the core through a register in the

MSWC; see Section 5.5 on page 318.

0: Legacy (default at VCC Power-Up reset)

1: ACPI

Power Supply Off. This is a R/W bit. It always returns 0 when read. When using Legacy mode (bit 0 is set to

0) and setting this bit to 1, this bit indicates to the core that the host requests shutting down the power. The

value of this bit is available to the core by reading a register in the MSWC; see Section 5.5 on page 318.

0: No action (default at VPP Power-Up reset)

1: Indicates power shut down to the core in Legacy mode

7-2

Reserved.

PC87591L Datasheet(PDF) 347 Page - National Semiconductor (TI)

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