PC87591L datasheet(285/437 Pages) NSC

285 / 437 page

5.0 Host Controller Interface Modules (Continued)

Revision 1.07

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Host Interface Mouse Data Out Buffer Register (HIMDO)

The HIMDO register allows the core firmware to write to the DBBOUT register while setting OBF bit in the Status register. If

an IRQ12 interrupt is enabled, it is sent. If the core interrupt on output buffer empty is enabled (OBECIE in HICTRL register

is 1), writing to HIMDO de-asserts it (low).

Location: 00 FEA816

Type: WO

Host Interface Keyboard/Mouse Data In Buffer Register (HIKMDI)

The HIKMDI register allows the core firmware to read to the DBBIN register while clearing IBF bit in the Status register. If

the core interrupt on IBF is enabled (IBFCIE in HICTRL register is 1). Reading from HIKMDI de-asserts it (low).

Location: 00 FEAA16

Type: RO

5.2

POWER MANAGEMENT (PM) CHANNELS

The PC87591x implements two PM communication channels, both of which are compliant with ACPI specifications for an

embedded controller interface. The PC87591x may be configured to work in either Private Interface or Shared Interface

mode. The PM interface has two identical channels, which are individually configured and used. If using only one channel,

Shared Interface mode should be used; if using both channels, Private Interface mode may be used.

The description below refers to a single channel. The signals may have the suffix ‘n’ to indicate the channel number, either

1 or 2, where applicable. Registers in the core domain have the prefix HIPMn to indicate the channel number. Host domain

registers are identified by the logical device to which they belong.

Note: When working in PC87570 Compatible mode, only channel 1 may be used.

5.2.1

Features

●

Two operation modes

— PC87570 Compatible

— Enhanced PM

●

ACPI embedded controller interface compliant support

— Shared interface

— Private interface

●

PM channel registers (legacy 6216,6616)

— Command/Status

— Data

●

PM interrupt using

— IRQ

— SMI

— SCI

Bit

76543210

Name

Mouse DBBOUT Data

Bit

Description

7-0

Mouse DBBOUT Data.

Bit

76543210

Name

Keyboard/Mouse DBBIN Data

Bit

Description

7-0

Keyboard/Mouse DBBIN Data.

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