LPC47M14X datasheet(144/205 Pages) SMSC

144 / 205 page

SMSC DS – LPC47M14X

Page 144

Rev. 03/19/2001

NAME

REG OFFSET

(hex)

DESCRIPTION

GP51

Default = 0x01

on VTR POR

(R/W)

General Purpose I/0 bit 5.1

Bit[0] In/Out : =1 Input, =0 Output

Bit[1] Polarity : =1 Invert, =0 No Invert

Bit[3:2] Alternate Function Select

11=Reserved

10=Reserved

01=nDCD2

00=GPIO

Bits[6:4] Reserved

Bit[7] Output Type Select

1=Open Drain

0=Push Pull

GP52

Default = 0x01

on VTR POR

(R/W)

General Purpose I/0 bit 5.2

Bit[0] In/Out : =1 Input, =0 Output

Bit[1] Polarity : =1 Invert, =0 No Invert

Bit[3:2] Alternate Function Select

11=Reserved

10=Reserved

01=RXD2

00=GPIO

Bits[6:4] Reserved

Bit[7] Output Type Select

1=Open Drain

0=Push Pull

GP53

Default = 0x00

on VTR POR, VCC

POR and Hard

Reset

(Note 3)

(R/W)

General Purpose I/0 bit 5.3

Bit[0] In/Out : =1 Input, =0 Output

Bit[1] Polarity : =1 Invert, =0 No Invert

Bit[3:2] Alternate Function Select

11=Reserved

10=Reserved

01=TXD2

00=GPIO

Bits[6:4] Reserved

Bit[7] Output Type Select

1=Open Drain

0=Push Pull

GP54

Default = 0x01

on VTR POR

(R/W)

General Purpose I/0 bit 5.4

Bit[0] In/Out : =1 Input, =0 Output

Bit[1] Polarity : =1 Invert, =0 No Invert

Bit[3:2] Alternate Function Select

11=Reserved

10=Reserved

01=nDSR2

00=GPIO

Bits[6:4] Reserved

Bit[7] Output Type Select

1=Open Drain

0=Push Pull

LPC47M14X Datasheet(PDF) 144 Page - SMSC Corporation

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