W83977EF-AW datasheet(12/142 Pages) WINBOND

Part #	W83977EF-AW

Description	WINBOND ISA I/O

Download	142 Pages

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Manufacturer	WINBOND [Winbond]

Direct Link	http://www.winbond.com

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W83977EF-AW/W83977EG-AW

-10-

Host Interface , continted.

SYMBOL

I/O

FUNCTION

DRQ0

121

OUT12t

DMA Channel 0 request signal. (CR2C bit 7_6 = 00, default)

GP17

(PLEDO)

I/O12t

General purpose I/O port 1bit 7. (CR2C bit 7_6 = 01)

Alternate Function from GP17: Power LED output.

P14

I/O12t

KBC P14 I/O port (CR2C bit 7_6 = 10)

SCI#

OUT12t

System Control Interrupt (CR2C bit 7_6 = 11)

DACK1#

122

INts

DMA Channel 1 Acknowledge signal

DRQ1

123

OUT12t

DMA Channel 1 request signal

DACK2#

124

INts

DMA Channel 2 Acknowledge signal

DRQ2

125

OUT12t

DMA Channel 2 request signal

DACK3#

126

INts

DMA Channel 3 Acknowledge signal

DRQ3

127

OUT12t

DMA Channel 3 request signal

TC

128

INts

Terminal Count. When active, this pin indicates termination of

a DMA transfer.

IRQ1

99

OUT12t

Interrupt request 1

IRQ3

98

OUT12t

Interrupt request 3

IRQ4

97

OUT12t

Interrupt request 4

IRQ5

96

OUT12t

Interrupt request 5

IRQ6

95

OUT12t

Interrupt request 6

IRQ7

94

OUT12t

Interrupt request 7

IRQ9

92

OUT12t

Interrupt request 9

IRQ10

100

OUT12t

Interrupt request 10

IRQ11

101

OUT12t

Interrupt request 11

IRQ12

102

OUT12t

Interrupt request 12

IRQ14

103

OUT12t

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

GP14

I/O12t

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

(GPACS1#)

Alternate Function 1 from GP14: General purpose address

decode output.

(P17)

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

PLEDO

OUT12t

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

IRQ15

104

OUT12t

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

GP15

(GPACS2#)

I/O12t

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

Alternate Function 1 from GP15: General purpose address

write enable output.

(P12)

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

WDT

OUT12t

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

CLKIN

1

INt

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

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