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PC87393F Datasheet(PDF) 58 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87393F
Description  100-Pin LPC SuperI/O Devices for Portable Applications
PDF  148 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87393F Datasheet(HTML) 58 Page - National Semiconductor (TI)

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2.0 Device Architecture and Configuration (Continued)
58
www.national.com
2.15.4
GPIO Pin Select Register
This register selects the GPIO pin (port number and bit number) to be configured (i.e., which register is accessed via the
GPIO Pin Configuration register). It is reset by hardware to 00h.
Location:
Index F0h
Type:
R/W
Bit
76543210
Name
Reserved
Port Select
Reserved
Pin Select
Reset
00000000
Bit
Description
7-6
Reserved
5-4
Port Select. These bits select the GPIO port to be configured:
00: Port 0 (default)
01, 10, 11: Binary value of port numbers 1-3 respectively. All other values are reserved.
3
Reserved
2-0
Pin Select. These bits select the GPIO pin to be configured in the selected port:
000, 001,... 111: Binary value of the pin number, 0, 1,... 7 respectively (default=0)



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