REG OFFSET
(hex)
NAME
DESCRIPTION
General Purpose I/0 bit 3.0
GP30
33
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity :=1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=FAN_TACH2
Default = 0x01
on VTR POR
(R/W)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
GP31
34
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=FAN_TACH1
Default = 0x01
on VTR POR
(R/W)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
GP32
35
General Purpose I/0 bit 3.2
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=FAN2
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
Default = 0x01
on VTR POR
Default = 0x00
on VCC POR
and Hard Reset
(Note 3)
(R/W)
GP33
36
General Purpose I/0 bit 3.3
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=FAN1
Default = 0x01
on VTR POR
Default = 0x00
on VCC POR
and Hard Reset
(Note 3)
(R/W)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
GP34
37
General Purpose I/0 bit 3.4
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=IRRX2
Default = 0x05
on VTR POR
(R/W)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
SMSC DS – LPC47M14X
Page 141
Rev. 03/19/2001
SMSC [ SMSC CORPORATION ]
