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How can I read FID of ISS ?

Other Parts Discussed in Thread: TVP5150

Dear guys,

1. The ISS module of DM8147  that I use to capture the PAL video. The FID have been set  at  input mode, but i can not read the status of FID. Can you tell me how can I read it, by which register ? By the way , I have measure the right status of FID at TVP5150' port.

2. If I can not read the fid status, just use the irq of resizer module ,the fid 1 of frame 0 and fid 0 of frame 1 may be combine into one frame. So the interlacing of video will  happen , or will not? 

Thank you very much .

  • Hello,

    Are you using IPNC?

    BR
    Margarita
  • Hi,

      I do not use IPNC. I build the project in BIOS by CCS5. Today, I use a unnormal function read the FID successfuly. I set the FID pin at GPIO mode. And I read the gpio status in the capture of IRQ. But the video looks very bad , the zigzag  is very serious. 

     1. the data flow : TVP5150 --->ISIF  --->IPIPEIF----->RESIZE A ---->DDR

     2.At the initial time, the buffer 0  address set to Resize A to capture field 0 of frame 0.

    3.when irq happen , I set the buffer 0 address at a width offset to  Resize A to capture field 1 of frame 0. 

    4.when irq happen again, I set the buffer 1 to Resize A. to capture field 0  of frame 1.

    Did I something wrong ?

    .