SC2200 datasheet(67/433 Pages) NSC

67 / 433 page

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Signal Definitions (Continued)

IRQ9

C22

AA3

Interrupt 9 Request Input. Active high.

Note:

If IRQ9 function is selected but not

used, tie IRQ9 low.

IDE_DATA6

IOCHRDY

I/O Channel Ready

Note:

If IOCHRDY function is selected but

not used, tie IOCHRDY high.

GPIO19+INTC#

2.4.8

Low Pin Count (LPC) Bus Interface Signals

Signal Name

Ball No.

Type

Description

Mux

EBGA

TEPBGA

LAD3

AJ10

L29

I/O

LPC Address-Data. Multiplexed command,

address, bidirectional data, and cycle status.

GPIO35

LAD2

AK10

L30

GPIO34

LAD1

AL10

L31

GPIO33

LAD0

AJ11

M28

GPIO32

LDRQ#

AL9

L28

LPC DMA Request. Encoded DMA request

for LPC interface.

Note:

If LDRQ# function is selected but not

used, tie LDRQ# high.

GPIO36

LFRAME#

AK9

K31

LPC Frame. A low pulse indicates the begin-

ning of a new LPC cycle or termination of a

broken cycle.

GPIO37

LPCPD#

AJ9

K28

LPC Power-Down. Signals the LPC device

to prepare for power shut-down on the LPC

interface.

GPIO38/IRRX2

SERIRQ

AL8

J31

I/O

Serial IRQ. The interrupt requests are serial-

ized over a single signal, where each IRQ

level is delivered during a designated time

slot.

Note:

If SERIRQ function is selected but

not used, tie SERIRQ high.

GPIO39

2.4.7

Sub-ISA Interface Signals (Continued)

Signal Name

Ball No.

Type

Description

Mux

EBGA

TEPBGA

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