LM8322JGR8/NOPB National Semiconductor, LM8322JGR8/NOPB Datasheet - Page 33

• Manufacturer Part Number: LM8322JGR8/NOPB
• Description: IC MOBILE I/O COMPAN 36MICRARRAY
• Manufacturer: National Semiconductor

Specifications of LM8322JGR8/NOPB

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 36-Micro Array
• For Use With: LM8322EVALKIT - BOARD EVALUATION LM8322
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM8322JGR8; LM8322JGR8TR

17.9 READ_PORT_STATE COMMAND
The READ_PORT_STATE command consists of a command
byte (0x88) from the host and two data bytes from the
LM8322. The data bytes indicate the states on the corre-
17.10 READ_FIFO COMMAND
The READ_FIFO command consists of a command byte
(0x89) sent from the host and a variable number of data bytes
received from the LM8322. The LM8322 will provide data until
17.11 RPT_READ_FIFO COMMAND
The RPT_READ_FIFO command consists of a command
byte (0x8A) and from the host and a variable number of data
bytes from the LM8322. This command provides the same
7
1
7
1
7
1
FIFODATA
6
0
FIFODATA
6
0
GPIO_xx
Field
6
0
Field
Bit
5
0
5
0
5
0
4
0
4
0
4
0
3
1
3
1
2
0
3
1
0xxxxxxx
1xxxxxxx
0xxxxxxx
1xxxxxxx
1
0
Value
Value
2
0
Value
0
1
2
0
0
0
1
1
7
1
0
0
0
6
If the GPIO port pin is an input, pullup is disabled. If the GPIO port pin is an
output, it is driven low.
If the GPIO port pin is an input, pullup is enabled. If the GPIO port pin is an
output, it is driven high.
Key-release event.
Key-press event.
0
1
Key-release event.
Key-press event.
7
5
7
6
4
6
5
FIFODATA
33
3
4
5
FIFODATA
sponding ports. The first data byte controls ports GPIO_15
through GPIO_08, and the second byte controls ports
GPIO_07 through GPIO_00.
the FIFO is empty. The last data byte is indicated by its value
(0x00) and a negative acknowledgement (NACK) on the
ACCESS.bus interface. The data bytes correspond to key-
press and key-release events, as described in Table 5.
data as a previous READ_FIFO command, but without ad-
vancing the FIFO pointer. It may be used to recover from an
error encountered during a READ_FIFO command.
3
4
2
3
2
1
2
1
0
Description
Description
Description
1
0
IO_
GP
07
7
0
7
6
7
6
5
6
5
5
4
4
0x00
4
0x00
3
3
3
2
2
2
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1
1
1
0
0
0