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OMAP4460 - CAM2 parallel port interface use case

hiteshgambhava
Intellectual 475 points
Other Parts Discussed in Thread: 4460, 4430

Hi,

I want to give HDMI input to OMAP 4460 chip set. So i decide to use HDMI receiver which has 16-bit YCbCr video out put data.

I want to connect this HDMI receiver out put data to CAM2 16-bit parallel port.

Can I use CAM2 16-bit parallel port to receive 16-bit YCbCr data  coming out from HDMI receiver ?

Your early reply will help me to take decision very fast.

Thanks.

Regards,

Hitesh Gambhava

  • 0
    TI__Prodigy 125 points

    Hello,

    the CAM2 interface is not provided on 4460, only 4470, at least this is my knowledge. correct me if i am wrong.

    you can send it to CSI2 i/f, or order a bridge that we have developped (connected to CSI2).

    let me know if that is of your interest.

     

    BR,

    Jose

     

  • 0 in reply to Jose Yp-Tcha
    Intellectual 475 points

    Hi Jose,

    CAM2 port is provided on OMAP 4460. Please refer DM and TRM of 4460 ES1.

    Please let me know if i am misinterpret the things.

    Thanks,

    Hitesh Gambhava

  • 0 in reply to hiteshgambhava
    TI__Intellectual 1410 points

    Hitesh,

    Yes you can receive the data upto 16 bits. Cam2 is also known as CPI. There are two operating modes of of CPI.

    1) SYNC mode where you can receive 8 to 16 bit data irrespective of format

    2) ITU-R BT.656 mode where you can receive YUV422 data over 8 or 10 bit video interface. Please refer the ITU-R BT.656 standard or TRM for more details.

    Regards,

    Chintan

  • 0 in reply to hiteshgambhava
    TI__Prodigy 125 points

    Hi,

    my mistake, only 4430 does not, and yes it is possible to connect HDMI IN chip to CAM2.

    and yes, you can connect HDMI IN to CAM2.

    using this interface, you will be limited to 16bits as where using CSI2, you could get 24bits.

    BR,

    Jose

  • 0 in reply to Chintan Patel
    Intellectual 475 points

    Hi Chintan,

    Thanks for your reply.

    Actually, I want to connect HDMI Input with OMAP-4460. So I decide to use Analog device's HDMI Rx ADV7611. I connected its video out put to CAM2 port and McBSP2 port for audio data.

    HDMI Rx has MCLK, SCLK, LR CLK and Data Out lines from audio port. OMAP-McBSP has available lines are Data receive(Dr), Combined serial clock (CLKx) and combined frame synchronization (Fsx) and ABE_Clock input.

    I connected MCLK to ABE_Clock input, SCLK to CLKx , DO to DI and LRCLK to FSx. I have two queries with this connection.

    1. Can I use ABE_McBSP to receive audio data ?

    2. Is my above connection is correct with McBSP port ?

    Thanks in advance. Your valuable answer will help me to freeze my design.

    Best Regards,

    Hitesh Gambhava

  • 0 in reply to hiteshgambhava
    TI__Intellectual 2505 points

    Hitesh,

    Could you please start another thread on HDMI audio?

    Thank you,

    Magdalena