W83977TF-A View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

W83977TF-A

WINBOND I/O

Winbond 

W83977TF

PRELIMINARY

1.1 Host Interface, continued

SYMBOL PIN

IRQ14

103

GP14

( GPACS )

(P17)

PLEDO

IRQ15

104

GP15

( GPAWE )

(P12)

WDT

CLKIN

1

I/O

OUT12t

I/O12t

OUT12t

OUT12t

I/O12t

OUT12t

INt

FUNCTION

Interrupt request 14. (CR2C bit 1_0 = 00, default)

General purpose I/O port 1 bit 4. (CR2C bit 1_0 = 01)

Alternate Function 1 from GP14: General purpose address

decode output.

Alternate Function 2 from GP14: KBC P17 I/O port.

Power LED output. (CR2C bit 1_0 = 10)

Interrupt request 15.(CR2C bit 3_2 = 00, default)

General purpose I/O port 1 bit 5. (CR2C bit 3_2 = 01)

Alternate Function 1 from GP15: General purpose address write

enable output.

Alternate Function 2 from GP15: KBC P12 I/O port.

Watch-Dog timer output. (CR2C bit 3_2 = 10)

24 or 48 MHz clock input, selectable through bit 5 of CR24.

1.2 General Purpose I/O Port

SYMBOL PIN

I/O

FUNCTION

GP20

(KBRST)

69

I/O12t General purpose I/O port 2 bit 0.

Alternate Function from GP20: Keyboard reset (KBC P20)

SMI

70 OUT12t For the power management, the SMI is active low by the power

management events, that generate and SCI in ACPI mode.

(CR2B bit 4_3 = 00, default)

GP21

(P13)

I/O12t General purpose I/O port 2 bit 1. (CR2B bit 4_3 = 01)

Alternate Function from GP21: KBC P13 I/O port.

P16

I/O12t KBC P16 I/O port. (CR2B bit 4_3 = 10)

PANSWOUT 72

GP22

(P14)

OUT12t

I/O12t

Panel Switch output. (CR2B bit 5 = 0, default)

General purpose I/O port 2 bit 2. (CR2B bit 5 = 1)

Alternate Function from GP22: KBC P14 I/O port.

PANSWIN

GP23

73

IN12t Panel Switch input. (CR2B bit 7_6 = 00, default)

I/O12t General purpose I/O port 2 bit 3. (CR2B bit 7_6 = 01)

(P15)

Alternate Function from GP23: KBC P15 I/O port

GP24

(P16)

40

I/O12t General purpose I/O port 2 bit 4 (CR2A bit 5_4 = 01)

Alternate Function from GP24: KBC P16 I/O port

P13

I/O12t KBC P13 I/O port. (CR2A bit 5_4 = 10)

GP25

(GA20)

39

I/O12 General purpose I/O port 2 bit 5.

Alternate Function from GP25: GATE A20 (KBC P21)

Publication Release Date: April 1998

-7 -

Revision 0.62

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