SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 333

• 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
GP16
Default = 0x01
on VTR POR
SCH3114,SCH3116
DEVICES ONLY
GP17
Default = 0x01
on VTR POR
SCH3112 DEVICE
ONLY
GP17
Default = 0x01
on VTR POR
SCH3114,SCH3116
DEVICES ONLY
GP21
Default =0x8C
on VTR POR
GP22
Default =0x8C
on VTR POR
NAME
Table 26.3 Detailed Runtime Register Description (continued)
2A
(R/W)
2B
(R/W)
2B
(R/W)
2C
(R/W)
2D
(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= nCTS3
0=GP16
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
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
1=Open Drain
0=Push Pull
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= nRTS3
0=GP17
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
General Purpose I/O bit 2.1
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[3:2] Alternate Function Select
11= KDAT (Default)
10=Either Edge Triggered Interrupt Input 0
01=Reserved
00=Basic GPIO function
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull (Default)
APPLICATION NOTE:
When Bits[3:2] are programmed to ‘11’ to select the KDAT function, bit[0]
should always be programmed to ‘0’. The KDAT function will not operate
properly when bit[0] is set.
General Purpose I/O bit 2.2
Bit[0] In/Out :
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[3:2] Alternate Function Select
11= KCLK (Default)
10=Either Edge Triggered Interrupt Input 1
01= Reserved
00=Basic GPIO function
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain (Default)
0=Push Pull
APPLICATION NOTE:
When Bits[3:2] are programmed to ‘11’ to select the KCLK function, bit[0]
should always be programmed to ‘0’. The KCLK function will not operate
properly when bit[0] is set.
DATASHEET
=1 Input, =0 Output
=1 Input, =0 Output
=1 Input, =0 Output
=1 Input, =0 Output
=1 Input, =0 Output
317
DESCRIPTION
(Note
(Note
26.20)
26.20)
Rev 0.2 (09-28-04)