PC87393VJG National Semiconductor, PC87393VJG Datasheet - Page 40

• 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

www.national.com
2.0 Device Architecture and Configuration
2.10.4 SuperI/O Configuration 3 Register (SIOCF3)
Location:
Type:
Bit
Name
Reset
7-6
5-4
3-2
1-0
Bit
1.
Pins 83 and 82 Function Select
Bits
7 6
0 0
0 1
1 0
1 1
Bits
5 4
0 0
0 1
1 0
1 1
Pin 85 Function Select
Bits
3 2
0 0
0 1
1 0
1 1
Pin 86 Function Select
Bits
1 0
0 0
0 1
1 0
1 1
Pin 84 Function Select
In the PC87391, this pin is pulled up after reset by an internal pull-up resistor. Software should set this field to
11 to enable the FDC function.
Index 23h
R/W
Function
GPIO32-33 (default for all XCNF2-0 values except x01)
XA10-11 (default when XCNF2-0 is x01)
MDRX, MDTX
XIORD, XIOWR
Function
GPIO31 (default for all XCNF2-0 values except x01)
XA9 (default when XCNF2-0 is x01)
PIRQD
MTR1 (signal output is floated when PPM mode is enabled)
Function
GPIO30 (default for all XCNF2-0 values except x01)
XA8 (default when XCNF2-0 is x01)
PIRQC
Reserved
Function
GPIO27 (default for all XCNF2-0 values except x01
XA7 (default when XCNF2-0 is x01)
PIRQB
Reserved
Function Select
Pins 83 and 82
7
Strap
1
6
Function Select
5
Pin 84
Strap
Description
40
4
(Continued)
Function Select
3
Pin 85
Strap
2
Function Select1
1
Pin 86
Strap
0