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PC87366 Datasheet(PDF) 136 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87366
Description  128-Pin LPC SuperI/O with System Hardware Monitoring, MIDI and Game Ports
PDF  240 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87366 Datasheet(HTML) 136 Page - National Semiconductor (TI)

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6.0 General-Purpose Input/Output (GPIO) Port (Continued)
136
www.national.com
6.4.4
GPIO Data Out Register (GPDO)
Location:
Device specific
Type:
R/W
6.4.5
GPIO Data In Register (GPDI)
Location:
Device specific
Type:
RO
Bit
76543210
Name
Data Out
Reset
11111111
Bit
Description
7
Data Out. Bits 7-0 correspond to pins 7-0 respectively. The value of each bit determines the value driven on the
corresponding GPIO pin when its output buffer is enabled. Writing to the bit latches the written data unless the
bit is locked by the GPCFG register Lock bit. Reading the bit returns its value, regardless of the pin value and
configuration.
0: Corresponding pin driven to low when output enabled
1: Corresponding pin driven or released to high (according to buffer type and static pull-up selection) when
output enabled
6
5
4
3
2
1
0
Bit
76543210
Name
Data In
Reset
XXXXXXXX
Bit
Description
7
Data In. Bits 7-0 correspond to pins 7-0 respectively. Reading each bit returns the value of the corresponding
GPIO pin, regardless of the pin configuration and the GPDO register value. Write is ignored.
0: Corresponding pin level low
1: Corresponding pin level high
6
5
4
3
2
1
0



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