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LM8322 Datasheet(PDF) 31 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM8322
Description  Mobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus Host Interface
PDF  42 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM8322 Datasheet(HTML) 31 Page - National Semiconductor (TI)

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17.5 WRITE_PULL_DOWN COMMAND
The WRITE_PORT_SEL command consists of a command
byte (0x84) and two data bytes from the host. The data bytes
configure the pullup/pulldown device (if enabled) for the cor-
responding general-purpose I/O ports as pullups (0) or pull-
downs (1). The first data byte controls ports GPIO_15 through
GPIO_08, and the second byte controls ports GPIO_07
through GPIO_00.
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
1
0
0
0
0
1
0
1
Bit
Value
Description
GPIO_xx
0
GPIO port pin pullup/pulldown device is a pullup.
1
GPIO port pin pullup/pulldown device is a pulldown.
17.6 WRITE_PORT_SEL COMMAND
The WRITE_PORT_SEL command consists of a command
byte (0x85) and two data bytes from the host. The data bytes
configure the corresponding general-purpose I/O ports as in-
puts (0) or outputs (1). The first data byte controls ports
GPIO_15 through GPIO_08, and the second byte controls
ports GPIO_07 through GPIO_00.
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
1
0
0
0
0
1
0
1
0
Bit
Value
Description
GPIO_xx
0
GPIO port pin is an input.
1
GPIO port pin is an output.
The GPIO_09 port pin can only be configured as an input with
weak pullup/pulldown device.
31
www.national.com



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