TPS53676EVM-084: tps53676 AVSbus test

Part Number: TPS53676EVM-084
Other Parts Discussed in Thread: TPS53676

Hi experts,

i want to test the AVSbus function of the TPS53676. TI offers a USB‑I2C/PMBus adapter. However, they want to use their own USB‑to‑SPI adapter on a PC for AVSbus testing. How can this be implemented? Furthermore, if I use an MCU for SPI communication, AVSbus does not have a chip‑select (CS) pin. Is any special debugging connection required? 

Best regards,

Kyle