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DDC232: DDC232 CLK_CFG and DCLK

Part Number: DDC232

Hello,

I plan to interface a SPI interface into the DDC232 and I wanted to know if it was okay to route the same clk bus to CLK_CFG and DCLK.  The datasheet state that CLK and DCLK should be different (though from the same source), but does not stipulate anything for CLK_CFG.   How I understand it is that after switching to regular mode from the initial configuration, the CFG pins are not in use. 

Is it okay if CLK_CFG gets clock pulses during normal operation?

Planned interface setup:
SPI CLK - >  CLK_CFG & DCLK

SPI MOSI -> DIN_CFG

SPI MISO -> DOUT

MCU PLL divided Clock out -> CLK

Thanks for the clarification!

  • Hi Francisco,

    Welcome to TI E2E forum.

    Regarding your question on shorting CLK_CFG and DCLK, we don't know and since this is an older device, we would have to check with design and it is highly probable that they do not remember as well. Also since it was not intended to be used this way, the board is not wired to be tested this way and probably you will have to check it yourself. Even if it works even 1 device, we cannot guarantee that it will be reliable.