Other Parts Discussed in Thread: ADS127L21B
Tool/software:
I'm working with TMS320F28p65X microcontroller and ADS127L21B ADC.
In my application I want to interface TMS320F28p65X microcontroller with adc in daisy chain connection. I have 2 adc in daisy chain connection.
There is problem occuring while doing it. We have to First configure Filter3 Register with
data_mode[1:0] = 00 because it is referred in data sheet that to run adc in daisy chain connection the SDO/DRDY
pin should be working as only data output mode.
So, I have to transmit 008b00(padding byte + 0x80|0x0b + register data) twice for both adc in connection. This will be a Frame. For the first Frame the adc will be configured in data only mode and when the second Frame is transmitted then the adc will reflect 000000 008b00.
But this is not happening The reflected value on SDO pin is ffffff.
What could be the reason for this and how it should be corrected.
Best regard,
Divyesh patel
