SLUSDQ4 April 2019 BQ79606A-Q1
A broadcast write reverse direction command enables the customer to switch the daisy chain communication direction for stack devices. The broadcast write reverse direction command is always the same as it is only used with the CONTROL1[DIR_SEL] bit. The command frame for a broadcast write reverse direction is configured as in Table 19.
|Initialization Byte||0xE0||Writing 1 byte in the reverse direction|
|Device ID Address||--||No address byte is sent in broadcast mode|
|Register Address||0x0105||Start with address 0x0105 (CONTROL1))|
|Data||0x80||Set the DIR_SEL bit to change stack communication to the 'south' direction.|
The broadcast write reverse direction allows any write command to be sent in the reverse direction. It is not recommended to send any command other than the CONTROL1[DIR_SEL] to avoid communication collisions. Communication collisions are not detected and result in corrupted communication on the stack interface.