ZHCSMR1C october 2019 – september 2021 UCC5870-Q1
PRODUCTION DATA
When using the Address-based configuration for SPI communication in the system, all devices must be individually addressed. Upon entering the Configuration 1 state (indicated by nFLT* high, assuming no fault during startup), all devices are addressable 0x1 through 0xE (14 unique addresses), with 0xF being a broadcast address to which all devices respond. Addressing is done in the Configuration 1 state. In this state, the IN+ input is pulled high while the WR_CA command is sent with the defined address. The written address is stored in the GDADDRESS[GD_ADDR] bits (GDADDRESS). Once all devices are addressed, send the CFG_IN command with the broadcast device address (0xF) to lock in the device address and move to configuring the devices (Configuration 2 state). The timing diagram for the addressing is shown in Timing diagram for addressing when using the Address-based SPI Communication Scheme..