SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 336

• Manufacturer Part Number: SCH3112I-NE
• Description: LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
• Manufacturer: SMSC [SMSC Corporation]

Rev 0.2 (09-28-04)
GP31
Default = 0x01
on VTR POR
SCH3114, SCH3116
DEVICES ONLY
GP32
Default = 0x84
on VTR POR
GP33
Default = 0x84
on VTR POR
GP34
Default = 0x01
on VTR POR
SCH3112 DEVICE
ONLY
GP34
Default = 0x01
on VTR POR
SCH3114, SCH3116
DEVICES ONLY
NAME
Table 26.3 Detailed Runtime Register Description (continued)
34
(R/W)
35
(R/W)
36
(R/W)
37
(R/W)
37
(R/W)
OFFSET
(HEX)
REG
General Purpose I/O bit 1.1
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1= nRI4
0=GP31
Bits[6:3] Reserved
Bit[7] Output Type Select read only returns 1= Open Drain
Note:
General Purpose I/O bit 3.2
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=MDAT (Default)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain (Default)
0=Push Pull
APPLICATION NOTE:
When Bit[2] are programmed to ‘1’ to select the MDAT function, bit[0]
should always be programmed to ‘0’. The MDAT function will not operate
properly when bit[0] is set.
General Purpose I/O bit 3.3
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=MCLK (Default)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain (Default)
0=Push Pull
APPLICATION NOTE:
When Bit[2] are programmed to ‘1’ to select the MCLK function, bit[0]
should always be programmed to ‘0’. The MCLK function will not operate
properly when bit[0] is set.
General Purpose I/O bit 1.1
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bits[6:2] Reserved
Bit[7] Output Type Select read only returns 1= Open Drain
Note:
General Purpose I/O bit 1.1
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1= nDTR4
0=GP34
Bits[6:3] Reserved
Bit[7] Output Type Select read only returns 1= Open Drain
Note:
DATASHEET
The pin can only be an Open Drain output.
The pin can only be an Open Drain output.
The pin can only be an Open Drain output.
LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
=1 Input, =0 Output
=1 Input, =0 Output
=1 Input, =0 Output
=1 Input, =0 Output
=1 Input, =0 Output
320
DESCRIPTION
SMSC SCH311X
Datasheet