LPC47S457-NC SMSC [SMSC Corporation], LPC47S457-NC Datasheet - Page 175

• Manufacturer Part Number: LPC47S457-NC
• Description: Advanced I/O with X-Bus Interface
• Manufacturer: SMSC [SMSC Corporation]

SMSC LPC47S45x
GP25
Default = 0x01
on VTR POR
GP26
Default = 0x01
on VTR POR
GP27
Default = 0x01
GP30
Default = 0x01
on VTR POR
GP31
Default = 0x01
on VTR POR
on VTR POR
NAME
REG OFFSET
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
(hex)
30
31
32
33
34
DATASHEET
General Purpose I/0 bit 2.7
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=IO_SMI# (Note 4)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/0 bit 3.0
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity :=1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1= nXCS2 (X-Bus Chip Select 2)
0= GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/0 bit 3.1
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=nXCS3 (X-Bus Chip Select 3)
0= GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/0 bit 2.5
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1= 8042 P12 function (User Note 2)
0= Basic GPIO Function
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/0 bit 2.6
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bits[6:2] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
Page 175 of 259
DESCRIPTION
Rev. 06-01-06