Custom SPI with maximum frequency 80MHz
Posted: Fri Sep 27, 2024 5:03 am
I want to use esp32-s3 to read data from analog to digital converter AD7386-4 which communicates by using SPI.
https://www.analog.com/en/products/ad73 ... rt-details
but the SPI of AD7386 is very custom.
It requires 4 wires for data out and 1 wire for data in.
The question is, is it possible to write SPI manually but still achieve 80MHz of clock without using the SPI interface of ESP32?
I don't know if 8 wire mode of ESP32 SPI can use only one data in and 4 data out ?
https://www.analog.com/en/products/ad73 ... rt-details
but the SPI of AD7386 is very custom.
It requires 4 wires for data out and 1 wire for data in.
The question is, is it possible to write SPI manually but still achieve 80MHz of clock without using the SPI interface of ESP32?
I don't know if 8 wire mode of ESP32 SPI can use only one data in and 4 data out ?