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Acknowledge package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

2 bytes

Header

Module

address

Package

identifier

Package

length

Confirmation

code

Checksum

0xEF01

Xxxx

07H

03H

xxH

Sum

Note: Confirmation code=00H: parameter setting complete;

Confirmation code=01H: error when receiving package;

Confirmation code=1aH: wrong register number;

Port Control

Control

Description:

For UART protocol, it control the “on/off” of USB port;

For USB protocol, it control the “on/off” of UART port;

Input Parameter: control code

Control code ”0” means turns off the port;

Control code ”1” means turns on the port;

Return Parameter: confirmation code;

Instruction code: 17H

Command (or instruction) package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

1byte

2 bytes

Header

Chip

address

Package

identifier

Package

length

Instruction

code

Control

code

Checksum

0xEF01

xxxx

01H

04H

17H

0/1

sum

Acknowledge package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

2 bytes

Header

Chip

address

Package

identifier

Package

length

Confirmation

code

Checksum

0xEF01

xxxx

07H

03H

xxH

sum

Note: Confirmation code=00H: Port operation complete;

Confirmation code=01H: error when receiving package;

Confirmation code=1dH: fail to operate the communication port;

Read system Parameter

ReadSysPara

Description: Read Module’s status register and system basic configuration parameters;（Refer to 4.4

for system configuration parameter and 4.5 for system status register）.

Input Parameter：none

Return Parameter：Confirmation code (1 byte) + basic parameter（16bytes）

Instuction code: 0fH

Command (or instruction) package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

2 bytes

Header

Module

address

Package

identifier

Package length

Instruction

code

Checksum

0xEF01

Xxxx

01H

03H

0fH

sum

Acknowledge package format: