LPC47N267 datasheet(13/180 Pages) SMSC

13 / 180 page

SMSC DS – LPC47N267

Page 13

Rev. 10/23/2000

STQFP PIN #

NAME

SYMBOL

BUFFER

TYPE PER

FUNCTION

DESCRIPTION

General

Purpose I/O/

X-Bus Chip

Select 0

GP40/

XCS0#

(I/O8)/

General Purpose Input/Output.

X-Bus Chip Select 0.

General

Purpose I/O/

X-Bus Chip

Select 1

GP41/

XCS1#

(I/O8)/

General Purpose Input/Output.

X-Bus Chip Select 1.

General

Purpose I/O/

X-Bus Chip

Select 2

GP42/

XCS2#

(I/O8)/

General Purpose Input/Output.

X-Bus Chip Select 2.

General

Purpose I/O/

X-Bus Read

Strobe

(Note 5)

GP43/

XRD#

(I/O8)/

General Purpose Input/Output.

X-Bus Read Strobe.

General

Purpose I/O/

X-Bus Write

Strobe

(Note 5)

GP44/

XWR#

(I/O8)/

General Purpose Input/Output.

X-Bus Write Strobe.

General

Purpose I/O/

X-Bus Addr 0

GP45/

XA0

(I/O8)/

General Purpose Input/Output.

X-Bus Address Bit 0.

General

Purpose I/O/

X-Bus Addr 1

GP46/

XA1

(I/O8)/

General Purpose Input/Output.

X-Bus Address Bit 1.

General

Purpose I/O/

X-Bus Addr 2

GP47/

XA2

(I/O8)/

General Purpose Input/Output.

X-Bus Address Bit 2.

General

Purpose I/O/

X-Bus Addr 3/

X-Bus Chip

Select 3

GP10/

XA3/

XCS3#

(I/O8)/

O8/

General Purpose Input/Output.

X-Bus Address Bit 3.

X-Bus Chip Select 3.

GENERAL PURPOSE I/O (12)

56,

57-59

General

Purpose I/O

GP24,

GP17,

GP20-GP22

(I/O8/OD8)

(Note 6)

Dedicated General Purpose Input/Output.

General

Purpose I/O

(System

Option)

(Note 7)

GP11/

(SYSOPT)

(I/O8/OD8)

General Purpose Input/Output.

At the trailing edge of hardware reset the GP11 pin

is latched to determine the configuration base

address: 0 = Index Base I/O Address 02E Hex; 1 =

Index Base I/O Address 04E Hex.

General

Purpose I/O/

System Mgt.

Interrupt

GP12/

IO_SMI#

(I/O12/OD12)

(O12/OD12)

General Purpose Input/Output.

Active low System Management Interrupt Output.

General

Purpose I/O/

IRQ Input 1

GP13/

IRQIN1

(I/O8/OD8)/

General Purpose Input/Output.

External Interrupt Input. Steerable onto one of the

15 Serial IRQs.

LPC47N267 Datasheet(PDF) 13 Page - SMSC Corporation

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