SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 335

• 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
SP6 Option
Default = 0x04
on VTR POR
THIS REGISTER IS
RESERVED FOR
SCH3112 AND
SCH3114 DEVICES
SP6 Option
Default = 0x04
on VTR POR
SCH3116 DEVICE
ONLY.
GP27
Default = 0x01
GP30
Default = 0x05
on VTR POR
GP31
Default = 0x01
on VTR POR
SCH3112 DEVICE
ONLY
on VTR POR
NAME
Table 26.3 Detailed Runtime Register Description (continued)
31
(R/W)
31
(R/W)
32
(R/W)
33
(R/W)
34
(R/W)
OFFSET
(HEX)
REG
SCH3112 AND SCH3114 DEVICES
Bits[7:0] RESERVED
SCH3116 DEVICE - SP Options for SP6
Bit[0] nSCOUT6 Select:
1= nRTS6
0= nDTR6
Bit[2:1] nSCIN Select:
11= nDCD6
10= nRI6
01= nCTS6
00= nDSR6
Bit[3] Automatic Direction Control Select
1=FC on
0=FC off
Bits[4] Signal select
1=nRTS control
0=nDTR control
Bits[5] Polarity
0= Drive low when enabled
1= Drive 1 when enabled
Bit[7:6] Reserved
General Purpose I/O bit 2.7
Bit[0] In/Out : =1 Input, =0 Output
Bit[1] Polarity : =1 Invert, =0 No Invert
Bit[3:2] Alternate Function Select
11=Reserved
10=8042 P17 function
01=nIO_SMI
00=GPIO
Bits[6:4] Reserved
Bit[7] Output Type Select
1=Open Drain
0=Push Pull
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=nFPRST (Default)
0=GPIO
Bits[6:3] Reserved
Bit[7] Output Type Select
1=Open Drain (Default)
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 read only returns 1= Open Drain
Note:
DATASHEET
The pin can only be an Open Drain output.
(Note
=1 Input, =0 Output
=1 Input, =0 Output
319
26.22)
(Note
26.19)
DESCRIPTION
Rev 0.2 (09-28-04)