AD9523-1 is not working.

HI,

 after you power up the board, you should read a register that has a non zero default value. Make sure you read that value correctly. This means the read operation functions.

Then you start writing a value to the registers 0x05 or 0x06 which are EEPROM customer version. Write a value and then read it back. See if the value you rad matches the value you have just written. This will tell you if the write operation functions.

Then you go and initialize the chip following the procedure in re A data sheet at page 40.

Petre

HI,

 after you power up the board, you should read a register that has a non zero default value. Make sure you read that value correctly. This means the read operation functions.

Then you start writing a value to the registers 0x05 or 0x06 which are EEPROM customer version. Write a value and then read it back. See if the value you rad matches the value you have just written. This will tell you if the write operation functions.

Then you go and initialize the chip following the procedure in re A data sheet at page 40.

Petre

Hello,
   As you said, I read the 0xF2 register value after powering on, it's default value is 0x03. I read the0xF2 register value 10 times in a loop and I'm getting these kind of values as follows.
    these values are not same when ever I read the register
Reg:0x0F2 = 0x6E
Reg:0x0F2 = 0xE8
Reg:0x0F2 = 0xF7
Reg:0x0F2 = 0x37
Reg:0x0F2 = 0xE4
Reg:0x0F2 = 0x78
Reg:0x0F2 = 0x7C
Reg:0x0F2 = 0xD8
Reg:0x0F2 = 0xCA
Reg:0x0F2 = 0x81.
  and I don't have much clarity about customer version ID registers(0x005, 0x006), it's default value is 0x00 but, simply I wrote 0x01 value to both the customer version registers and I read back the value again for 10 times in a loop, read value is also varying every time and unable to store the written value(written value and read back values are not matching).
  also, I observed it is taking 3.3V input and able provide output voltages at their corresponding pins.

HI,

I believe you should put the oscilloscope probes on the SPI lines and see what is going on. Until you can read reliably a register that has a default non zero value, it does not make sense to go and begin writing registers.

Petre