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DDC232 Interface

arv singh
Prodigy 10 points

Hi,

I am using two DDC232CK ICs to acquire the data from 8*8 photodiode array. I have doubt whether I should use a microcontroller or FPGA for interfacing with DDC232CK. If I use micro-controller which serial protocol should I use since it does not support any standard serial interface support or I have to go for bit-banging in case of microcontroller.

  • 0
    Prodigy 155 points

    I have done both the FPGA and microcontroller.  The FPGA gives you better timing synchronization and less external interface logic.  If you use a microcontroller, a couple of IO, a timer output, and a SPI bus is necessary.  The state machine to drive the DDC will have to be implemented in code.  Some external logic will be needed to interface the DDC to the SPI bus.  With a FPGA you will have direct connections to the DDC and the state machine can be implemented in hardware.  You could also add a soft core processor to the FPGA to perform other tasks.  System cost will also play a role in determining the best approach.