USB-TO-GPIO datasheet(41/50 Pages) TI1

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B.8

List of Host PC to USB Interface Adapter Commands

Table B-1. Host PC to USB Interface Adapter Commands

USB PACKET

COMMAND

BYTE 0

USB PACKET USB PACKET

USB PACKET USB PACKET USB PACKET

USB PACKET

COMMENTS

DESCRIPTION

COMMAND

BYTE 1

BYTE 2

BYTE 3

BYTE 4

BYTE 5

BYTES 6–63

CODE

Send Byte

0x01

Receive Byte

0x02

Write Byte

0x03

Write Word

0x04

Read Byte

0x05

Read Word

0x06

Process Call

0x07

Block Write

0x08

C number of bytes (from 1 to 32 bytes) to write

Block Read

0x09

Block Read –

C number of bytes (from 1 to

Block Write

0x0A

31 bytes) to write

Process Call

Write 0 to D if

Group

D (0xFF for

C number of bytes (from 1 to

0x0B

not for the last

Command

last packet)

32 bytes) to write

packet

Bit logic 1 for

Assert\Deassert

Bit 0 for line 1,

assert, bit

CONTROL

0x0C

...,

logic 0 for

Lines

bit 4 for line 5

deassert

Poll PMBUS

0x0F

Signal Lines

Turn On/Off

0 for off,

0x11

PEC

otherwise on

SLLU093 – August 2006

PMBUS/SMBUS Communications

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