W83637HF Datasheet, PDF(124/149 Page) Winbond

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W83637HF Datasheet, PDF (124/149 Pages) Winbond – LPC I/O

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W83637HF

Bit 1

Bit 0

: MSXKEY. This bit combining with MSRKEY (bit 4 of CRE0 of logical device A) and

ENMDAT_UP (bit 7 of CRE6 of logical device A) define what kind of mouse wake-up

event can trigger an active low pulse on PSOUT#. Their combination is described in the

following table.

ENMDAT_UP MSRKEY MSXKEY

Wake up event

1 Any button click or any movement

0 One click of left/right button

1 One click of left button

1 One click of right button

0 Two times click of left button

0 Two times click of right button

: KBXKEY. Enable any character received from Keyboard to wake-up the system

= 0 Only predetermined specific key combination can wake up the system.

= 1 Any character received from Keyboard can wake up the system.

CRE1 (Default 0x00) Keyboard Wake-Up Index Register

This register is used to indicate which Keyboard Wake-Up Shift register or Predetermined key Register

is to be read/written via CRE2. The first set of wake up key combination is in the range of 0x00 - 0x0E,

the second set 0x30 â 0x3E, and the third set 0x40 â 0x4E. Incoming key combination can be read

through 0x10 â 0x1E. The range of CIR wake-up index register is in 0x20 - 0x2F.

CRE2 Keyboard Wake-Up Data Register

This register holds the value of wake-up key register indicated by CRE1. This register can be

read/written.

CRE3 (Read only) Keyboard/Mouse Wake-Up Status Register

Bit 7-5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

: Reserved.

: PWRLOSS_STS: This bit is set when power loss occurs.

: CIR_STS. The Panel switch event is caused by CIR wake-up event. This bit is cleared

by reading this register.

: PANSW_STS. The Panel switch event is caused by PANSW_IN. This bit is cleared by

reading this register.

: Mouse_STS. The Panel switch event is caused by Mouse wake-up event. This bit is

cleared by reading this register.

: Keyboard_STS. The Panel switch event is caused by Keyboard wake-up event. This bit

is cleared by reading this register.

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Publication Release Date: June 25, 2003

Revision 1.3

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