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AD9517-3 SPI Interface

Question asked by smutha on Dec 27, 2015
Latest reply on Jan 26, 2016 by pkern


     For a new project we are using the AD9517-3. Prior to this we have successfully programmed and used the AD9523-1.

The problem right now is that there is no response from the AD9517-3 in a 4 wire interface.

The steps we follow are as follows:

1) Write 0x19 to address 0x000 (long instruction mode, 4 wire interface).

2) Write 0x01 to address 0x232 (transfer to active register set).

3) Read from 0x003 (device ID).

We are unable to get anything out of the SDO pin.

The schematic and pcb connections have been verified. We are using exactly the same interface that worked for AD9523-1 to talk to the AD9517-3.

Thank you for your help in advance,