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Original question:

PCM9211 XMCKO

PCM9211EVM-U: Rout XMCKO to MP0 or MPIO_A

Eric Sawade
Prodigy 80 points
Part Number: PCM9211EVM-U
Other Parts Discussed in Thread: PCM9211

Hello Ti,

i'm using the PCM9211 EVM with CodeControl. I tried to route XMCKO to the MPIO_A or MP0 port. But it is not working. When i switch back to TXOUT I can see the signal but as soon as I select XMCKO it is at low level. Can you help to find the right settings?

Best regards,

Eric 

  • 0
    TI__Mastermind 26671 points

    Hi Eric,

     Register 24h/XMCKEN controls whether the XMCKO should be muted or not, Please confirm that it is not muted by register 24h. Also confirm what you have for the following registers

    Also check the following table and registers 

    Table 7-16. MPO1 Pin and  Table 7-15. MPO0 Pin  , May be you are not setting MPOxSEL[3:0]  correctly. Please verify it.

    Table 7-26. MPIO Group A

     register 78h ,  bits MPASEL[1:0]

    Regards,

    Arash

  • 0 in reply to Arash Loloee
    Prodigy 80 points

    Hi Arash,

    I checked the registers. Everything seems to be fine from my point of view.  

    I can see the BCLK and LRCLK on MPIO_A. But the XMCKO is just at low level. It is the same when i select it for MPIO_A or for MP0. Is there any limitation? I have seen that there is another thread called "PCM9211 XMCKO" here in the forum. But there is no answer. Maybe you can help with the correct settings.

    Best regards,

  • 0 in reply to Eric Sawade
    TI__Mastermind 40285 points

    Hi Eric,

    Thanks for the update. Arash is out of office today and will get back to you on Friday.

    Thanks for your patience,
    Jeff McPherson

  • 0 in reply to Jeff McPherson
    Prodigy 80 points

    Hi Jeff,

    thanks for your reply. I got it finally running. It seems that it is not working when I ues the GUI or register inspector to control the PCM9211. When I configure everything via the scripting option it seems to work. 

    Best regards,

    Eric