PC87393VJG National Semiconductor, PC87393VJG Datasheet - Page 39

• Manufacturer Part Number: PC87393VJG
• Description: IC, SUPER I/O DEVICE, TQFP-100
• Manufacturer: National Semiconductor

Specifications of PC87393VJG

• Data Rate: 2Mbps
• Supply Voltage Range: 3V to 3.6V
• Logic Case Style: TQFP
• No. Of Pins: 100
• Operating Temperature Range: 0°C to +70°C
• Termination Type: SMD
• Transceiver Type: Interface
• Rohs Compliant: No

2.0 Device Architecture and Configuration
2.10.3 SuperI/O Configuration 2 Register (SIOCF2)
Location:
Type:
Bit
Name
Reset
7-6
5-4
3-2
1-0
Bit
1.
Pin 87 Function Select
Bits
7 6
0 0
0 1
1 0
1 1
Pins 95-90 Function Select
Bits
5 4
0 0
1 1
Pins 81-74 Function Select
Bits
3 2
0 0
0 1
1 0
1 1
0 1
1 0
Pins 3-1 and 100-96 Function Select
Bits
1 0
0 0
0 1
1 0
1 1
In the PC87391, these pins are pulled up after reset by an internal pull-up resistor. Software should set this
field to 11 to enable the UART 2 function.
Index 22h
R/W
Function
GPIO26 (default for all XCNF2-0 values, except x01)
XA6 (default when XCNF2-0 is x01)
PIRQA
XSTB2
Function
GPIO20-24, XSTB1 (default when XCNF2-0 is x00)
XA5-0 (default when XCNF2-0 is x01)
XA3-0, XSTB0, XSTB1 (default for all XCNF2-0 values, except x00 and x01)
Reserved
Function
GPIO10-17 (default when XCNF2-0 is x00, 110 or 111)
XA12-19 (default when XCNF2-0 is x01, 010 or 011)
JOYABTN1, JOYBBTN1, JOYAY, JOYBY, JOYAX, JOYBX, JOYABTN0, JOYBBTN0
RI2, DTR2_BOUT2, CTS2, SOUT2, RTS2, SIN2, DSR2, DCD2
Function
GPIO00-07 (default when XCNF2-0 is x00)
XD0-7 (default for all XCNF2-0 values, except x00)
JOYABTN1, JOYBBTN1, JOYAY, JOYBY, JOYAX, JOYBX, JOYABTN0, JOYBBTN0
Reserved
7
Function
Pin 87
Select
Strap
6
1
5
Pins 95-90
Function
Select
Strap
Description
39
4
(Continued)
3
Pins 81-74
Function
Select
Strap
2
Pins 3-1 and 100-96
1
Function
Select
Strap
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