LPC47M112 SMSC Corporation, LPC47M112 Datasheet - Page 148
![no-image](/images/no-image-200.jpg)
LPC47M112
Manufacturer Part Number
LPC47M112
Description
ENHANCED SUPER I/O CONTROLLER WITH LPC INTERFACE
Manufacturer
SMSC Corporation
Datasheet
1.LPC47M112.pdf
(208 pages)
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Enhanced Super I/O Controller with LPC Interface
Datasheet
SMSC DS – LPC47M112
GP16
Default = 0x01
on VTR POR
GP17
Default = 0x01
on VTR POR
GP20
Default = 0x01
on VTR POR
GP21
Default =0x01
on VTR POR
GP22
Default =0x01
on VTR POR
N/A
NAME
REG OFFSET
(R/W)
(R/W)
(R/W)
(R/W)
(R/W)
(hex)
(R)
2A
2B
2C
2D
2E
29
General Purpose I/0 bit 1.6
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1= J2X (Joystick 2, X-Axis RC Constant)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
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= J2Y (Joystick 2, Y-Axis RC Constant)
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=8042 P17 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 2.1
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[3:2] Alternate Function Select
11= nDS1 – Floppy Drive Select 1 (Note 4)
10=Either Edge Triggered Interrupt Input 0 (Note 1)
01=8042 P16 function (User Note 2)
00=Basic GPIO function
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/0 bit 2.2
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[3:2] Alternate Function Select
11= nMTR1 – Floppy Motor Select 1 (Note 4)
10=Either Edge Triggered Interrupt Input 1 (Note 1)
01=8042 P12 function (User Note 2)
00=Basic GPIO function
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
Reserved – reads return 0
Page 148
DESCRIPTION
Rev. 02/02/2005
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