If I write to the AD2S1210 read only register ...

Hi
There is a consultation.
My customer is working on a design using the AD2S1210.
But he did not get enough PCB status.
He decided to use the AD2S1210's / WR line in duplicate.

Here is the point of consultation.
If he writes to Position Resister (Read only in the data sheet) in normal mode, will something bad happen?
We expect the AD2S1210 to work without problems.
We need the knowledge of your engineers.

Best regards
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  • +1
    •  Analog Employees 
    on Aug 14, 2019 11:37 AM

    Mochi,

    Can you give me a bit more information regarding what the customer is trying to do with the WR/FSYNC line in terms of duplication?  For example is the part in configuration mode or are you in Normal Mode, Reading Position?  Are they trying to update another 1210 in the system at some point?    Have they considered ensuring that during the WR pulse that the CS for the selected 1210 is pulled high?

    As you stated attempting to write to a read only register should NOT cause any problems with the internal loop but to be 100% sure I'll verify this on the bench with some test code.

    Sean

Reply
  • +1
    •  Analog Employees 
    on Aug 14, 2019 11:37 AM

    Mochi,

    Can you give me a bit more information regarding what the customer is trying to do with the WR/FSYNC line in terms of duplication?  For example is the part in configuration mode or are you in Normal Mode, Reading Position?  Are they trying to update another 1210 in the system at some point?    Have they considered ensuring that during the WR pulse that the CS for the selected 1210 is pulled high?

    As you stated attempting to write to a read only register should NOT cause any problems with the internal loop but to be 100% sure I'll verify this on the bench with some test code.

    Sean

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