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About AP1_OUT of ADV7625

Hi.

Please tell me about ADV7625.

I set the AP1_OUT port pins individually using the tristate_ap1_out_x [7:0] control register.

I'd like to use the AP1_OUT4 port, but the port couldn't communicate as I2S data.

The AP1_OUT port 0 and 1 were working as I2S data and I could measure their waveform.

Could you help me?

Best Regards

Morry

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  • Hi,

      How you are saying whether you are giving MCPCM input at source.  Have you confirm the same with back to back connection (Source --> Sink).

     Please use the source like generator or player which can pumps the Multi channel PCM Audio and verify the output with direct connection before using the board.

     We always recommend customer to use HDMI generator for initial development and this would be helpful for debugging the projects especially HDMI audio projects.

    Thanks,

    Poornima

  • Dear Poornima

    Hi.

    I'm not saying whether I'm giving MCPCM input at source.

    Anyway I'd like to know how to output I2S0 from AP1_OUT4.

    Or the main i2s data is not able to output from AP1_OUT4?

    Thanks, 

    Best Regards

    Morry

  • Hi,

      As stated in previous comment, Are you configuring register " i2s_spdif_map_rot=00 & i2s_spdif_map_inv =1" ?

      Please let us know, whether you are using one of our Eval board ?

      Note: i2s_spdif_map_rot[1:0] - This control is used to select the arrangement of the I2S/SPDIF interface on the corresponding APx_OUT audio output port pins and the arrangement of the I2S/SPDIF interface on the audio output port pins is determined by "I2S_SPDIF_MAP_ROT".

    Thanks,

    Poornima

  • Dear Poornima

    Hi.

    I'm configuring that's register.

    I configured register below on AvesBlue.

    Device Adress:00

    Register Index:6D

    Write Value:40

    I'm using your Eval board.

    It's ADV7625.

    Thanks,

    Best Regards

    Morry

  • Hi,

      Could you please configure the "HDMI_Rx1_Map address" register in below way for swapping the I2S pins,

          68 6D 40;

    B0 EC 68 ; default=0x00, Set HDMI_Rx1_Map address
    B0 F0  58 ; default=0x00, Set HDMI_Rx2_Map address

    Thanks,

    Poornima