3.6.11 `CNFG_SetI2CConfiguration` Command and its Response

The CNFG_SetI2CConfiguration command (0xA9) saves the I²C Configuration to NVM.

This command is sent through Endpoint 0x05 (OUT). The response is read through Endpoint 0x85 (IN).

Table 3-27. `CNFG_SetI2CConfiguration` - Command
Byte Index	Command		Description
0	`0xA9`	Command code	Saves the I²C configuration to NVM
1	`0x70` `0x16` `0x04`	Speed: 100 kHz 400 kHz 1 MHz	I²C clock frequency
2	`0x01` `0x02` `…` `0xFA`	Timeout: 1 ms 2 ms …. 250 ms	I²C clock-stretch timeout

Table 3-28. `CNFG_SetI2CConfiguration` - Response
Byte Index	Response		Description
0	`0xA9`	Echo command code	Returns whether the `CNFG_SetI2CConfiguration` command was accepted
1	`0x20`	Accepted – success
	`0x60`	Rejected – wrong parameters	Command rejected because the parameters are invalid
	`0x64`	Rejected – configuration locked	Command rejected because the device configuration is locked
	`0x90`	Failure - unsuccessful NVM write	Saving to NVM failed; retry

DS40002695A

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