LPC47M172_07 SMSC [SMSC Corporation], LPC47M172_07 Datasheet - Page 170

• Manufacturer Part Number: LPC47M172_07
• Description: Advanced I/O Controller with Motherboard GLUE Logic
• Manufacturer: SMSC [SMSC Corporation]

Advanced I/O Controller with Motherboard GLUE Logic
Datasheet
SMSC/Non-SMSC Register Sets (Rev. 01-11-07)
GP17
Default = 0x01
on VTR POR
GP20
Default = 0x04
on VTR POR
Note 3
GP21
Default = 0x04
on VTR POR
Note 3
GP22
Default = 0x04
on VTR POR
Note 3
NAME
REG OFFSET
(Type)
(R/W)
(R/W)
(R/W)
(R/W)
0x2A
0x27
0x28
0x29
General Purpose I/0 bit 1.7
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity :=1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=FAN_TACH2
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/0 bit 2.0
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1= DDCSDA_5V
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/O bit 2.1
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bits[3:2] Alternate Function Select
11=Reserved
10=Either Edge Triggered Input 0 (Note 4)
01= DDCSCL_5V
00=GPIO
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/O bit 2.2
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bits[3:2] Alternate Function Select
11=Reserved
10=Either Edge Triggered Input 0 (Note 4)
01= DDCSDA_3V
00=GPIO
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
DATASHEET
Page 170
DESCRIPTION
SMSC LPC47M172