LPC47B34X Datasheet, PDF (179/250 Pages) SMSC Corporation – 128 Pin Enhanced Super I/O with LPC Interface for Consumer Applications

NAME
GP51
Default = 0x05
On VTR POR
GP52
Default = 0x05
On VTR POR
GP53
Default = 0x04
VTR POR, VCC
POR and Hard
Reset
(Note 1)
GP54
Default = 0x05
On VTR POR
REG OFFSET
(hex)
43
(R/W)
44
(R/W)
45
(R/W)
46
(R/W)
DESCRIPTION
General Purpose I/0 bit 5.1
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=nDCD2
0=Basic GPIO function
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
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=Basic GPIO function
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
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
General Purpose I/0 bit 5.4
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=nDSR2
0=Basic GPIO function
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
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