LPC47M192 datasheet(159/228 Pages) SMSC

159 / 228 page

SMSC DS – LPC47M192

Page 159

Rev. 03/30/05

DATASHEET

NAME

REG OFFSET

(hex)

DESCRIPTION

GP43

Default = 0x01

on VTR POR

Bits[3:2] are reset

(cleared) on VCC

POR, VTR POR and

PCI Reset

(R/W)

General Purpose I/0 bit 4.3

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

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

Bit[3:2] Alternate Function Select

11=Either Edge Triggered Interrupt Input 3 (Note 1)

10=Reserved

01=Device Disable Register Control. The GP43 pin is an

input, with non-inverted polarity. When bits[3:2]=01, they

cannot be changed by writing to these bits; they are

cleared by VCC POR, PCI Reset and VTR POR. That is,

when the DDRC function is selected for this pin, it cannot

be changed, except by a VCC POR, PCI Reset or VTR

POR.

The Device Disable register is controlled by the value of

the GP43 pin as follows:

If the GP43 pin is high, the Device Disable Register is

Read-Only.

If the GP43 pin is low, the Device Disable Register is

Read/Write.

00=Basic GPIO function

Bits[6:4] Reserved

Bit[7] Output Type Select

1=Open Drain

0=Push Pull

GP50

Default = 0x01

on VTR POR

(R/W)

General Purpose I/0 bit 5.0

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=nRI2 (User Note 1)

00=GPIO

Bits[6:4] Reserved

Bit[7] Output Type Select

1=Open Drain

0=Push Pull

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

LPC47M192 Datasheet(PDF) 159 Page - SMSC Corporation

LPC47M192 Datasheet(HTML) 159 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL