I am trying to interface the ADS1282EVM with my custom development board. When I try to read the registers through SPI, I get all of them to be zero. However I am able to communicate with the PCA9535RGE (i2c to parallel converter). As per the previous forum suggestions, I tried checking the DRDY as well, but it is constant at 2.9v. The PWDN pin is at 3.3v and I tried doing the reset using both the IO port and the SPI. The jumper positions are as follows.
J1 - REF
J2- OBCLK
J3 - DVDD
J10 - DIN
The swicth is towards ON BRD, selecting the on board reference voltage. The four voltage sources in J8, I have provided is as follows
+VA = 12.07
-VA = -10.4
+5 = 5.26
-5 = -4.4
+3.3VD = 3.4
Please let me know if I have done something wrong.