LTC6810-1 communication problem

Hello everyone,

I have trouble in SPI communication with LTC6810-1. The chip is standalone and is connected to STM32 microcontroller via SPI interface. For now, I need to determine the communication itself.

I have sent simple communication frame "00 01 3D 6E", but no any reply from IC got.

How to determine, if the IC is not broken at all by sending specified frame and got any answer?