SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 337

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

LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
Datasheet
SMSC SCH311X
GP36
Default = 0x01
on VTR POR
GP37
Default = 0x01
on VTR POR
GP40
Default =0x01
on VTR POR
CLOCK Output
Control Register
VTR POR = 0x00
GP42
Default =0x01
on VTR POR
NAME
Table 26.3 Detailed Runtime Register Description (continued)
39
(R/W)
3A
(R/W)
3B
(R/W)
3C
(R/W)
3D
(R/W)
OFFSET
(HEX)
REG
General Purpose I/O bit 3.6
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1= nKBDRST
0=Basic GPIO function
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/O bit 3.7
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=A20M
0=Basic GPIO function
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/O bit 4.0
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=DRVDEN0
0=Basic GPIO function
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
Bit[0] Enable
1= Output Enabled
0= Disable Clock output
Bit[3:1] Frequency Select
000= 0.25 Hz
001= 0.50 Hz
010= 1.00 Hz
011= 2.00 Hz
100= 4.00 Hz
101= 8.00 Hz
110= 16 hz
111 = reserved
Bit[7:4] Reserved
General Purpose I/O bit 4.2
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[2] Alternate Function Select
1=nIO_PME
Note: configuring this pin function as output with non-inverted polarity will
give an active low output signal. The output type can be either open drain
or push-pull.
0=Basic GPIO function
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
DATASHEET
(Note
=1 Input, =0 Output
=1 Input, =0 Output
=1 Input, =0 Output
=1 Input, =0 Output
321
26.21)
DESCRIPTION
Rev 0.2 (09-28-04)