Hi Joseph, I have reset the device. Then I issued a stop Command to stop any conversions and then I issued a SDATAC command. Then I directly read the config 1 register , It showed 0x00H but config 1 should be 91h after reset. I have attached the initialisation of I have asked about the resisitance value that has to be connected to sclk,cs,din,dout according to the layout to avoid transmission line reflections. Kindly do suggest some resistance values. My CPOL=0,CPHA=0 SETTINGS OF SPI void ads131e08 _init(void) { spi_xmit(0x0600); // reset and wait for 18 tclk DELAY_US(20); spi_xmit(0x0A00); // STOP CONVERSION DELAY_US(20); spi_xmit(0x1100); // Device Wakes Up in RDATAC Mode, so Send // SDATAC Command so Registers can be Written DELAY_US(20); spi_xmit(0x2100); //RREG COMMAND STARTING ADDRESS= 01H DELAY_US(2); spi_xmit(0x0000); // read 1 registers ie.. CONFIG1 DELAY_US(2); spi_xmit(0x0000); // DELAY_US(2); } With Regards, Siva a K
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