Part Number:AFE5818
Hi everyone,
I work currently on a project which integrate an AFE5818 in our board. I use an FPGA to do SPI communication with the AFE5818. To test registers, I write a value on it, and I read this register
-> When I test register on ADC part (addr 0x01 to 0x42), I never have issue
-> When I test register on VCA part (addr 0xC3 to 0xD9), the result is different : sometimes it works, sometimes the result was 0xFFFF, independently of the data I write before, and sometimes the result has no meaning.
I try to debug it, but i don't understand how the same SPI module with the same protocols can have different result. Is it possible to know if there is any physical difference on this two part (VCA, and ADC), like voltage source for example ? The datasheet seems do a distinction between register for these parts, but without more details.
I can't check the signals between FPGA and ADC because there are in the board, but I do a copy on others pins of FPGA to check, and I check it, without issue. And the fact that the communication with register from ADC part always work let me think that the SPI protocol is OK on the FPGA.
Thanks for your help