I use ADS8664 and want to communicate by spi.
I want to confirm the spi communication by read the default register value.
I wonder how i can read the default register value.
I try to spi in this way. the data send with MSB, and 32 bit(In the data sheet, The command or program register is 16 bit + additional bit 8. I just send more 8 clk.)
1. I send the command data as stanby_state = > 0x82000000
2. I send the program register read => 0x2E000000
- the address 0x17 is located in 15:9 bit. So, left shift 1 bit is applied then the data is 0x2E.
3. Repeat process 2. with checking by wavefrom.
I confirm the CLK, SDI and CS are act well. but SDO is act strange. I want to know the way to contorl this chip.