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AD9106 SRAM read/write

I'm trying to load wave data points into the SRAM.  I can set the shadow registers, ram_update, and read back the values that were entered.  I cannot seem to load values into the SRAM.

I'm updating the PAT_STATUS reg to allow write according to pg27 of Rev. A of the datasheet and perform the ram_update.  I "attempt" to write the data to the SRAM addresses.  I set PAT_STATUS reg to allow read and perform the ram_update.  When reading the SRAM addresses they all return 00.  The CS pin is toggled appropriately between commands.

Is there something else that I've missed in the datasheet?

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  • I would prefer this forum as phone service in the lab here is none existent at best and I have to step out to call.

    Is the Sclk supposed to be high or low while idle?

    Are the values for the SRAM left or right justified?

    Are the values for the SRAM 2's compliment?

    Does holding the CS line low increment, decrement or not increment the address pointer?

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  • I would prefer this forum as phone service in the lab here is none existent at best and I have to step out to call.

    Is the Sclk supposed to be high or low while idle?

    Are the values for the SRAM left or right justified?

    Are the values for the SRAM 2's compliment?

    Does holding the CS line low increment, decrement or not increment the address pointer?

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