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TVP5150A
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  • Forum Post: TVP5150APBS Active Video Cropping

    JEB
    Hey, I'm having problems with the active video pixel cropping stop registers (13h and 14h) on the TVP5150APBS (ROM Ver 0x03, 0x21). The start registers seem to work as indicated, except that the effect seems multiplied by 2x. If I write a 1 to the start registers (11h and 12h), the active pixels...
    on Jun 23, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    Viet Dinh
    Hi JEB, The negative values for AVID are used to expand out the number of active pixels, or in other words increase the number of active pixels from 720 to a greater number. Part of the problem you are seeing is most likely due to an error in the datasheet and a bug in...
    on Jun 23, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    JEB
    TVP5150A. Understood that this is NRND. This is an existing design that we are still shipping. http://focus.ti.com/docs/prod/folders/print/tvp5150a.html
    on Jun 23, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    JEB
    I want to crop pixels at just the end of the line. I would prefer not having to crop pixels at the beginning of the line. If you have a work around where we can only crop pixels at the end of the line, I would appreciate having that information if it isn't too much trouble. Thanks for the support...
    on Jun 23, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    Viet Dinh
    Hi JEB, Below is the address and default value for AVID_START and AVID_STOP. This work around requires these registers reload every time the system power up and standard change. Indirect Register Address NTSC default PAL default AVID_START 34Bh 8Bh 93h AVID_STOP 34Ch 01h 03h Attached is...
    on Jun 23, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    JEB
    The attached document was for the TVP5150AM1. We are not using the TVP5150AM1. We are using the TVP5150A. Do those instructions apply to the TVP5150A as well?
    on Jun 23, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    Viet Dinh
    JEB, This app note is apply to TVP5150A and TVP5150AM1. Sorry for the confusion. Regards, Viet
    on Jun 23, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    JEB
    Hey Viet, Thanks for the help yesterday. Using the indirect registers for the horizontal AVID cropping did work for me. We use embedded syncs. When using the horizontal AVID cropping registers, the location of the embedded syncs DO change which is what we want. However, using the AVID vertical...
    on Jun 24, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    Viet Dinh
    Hi JEB, Below is the address and default value for AVID_FIELD_START and AVID_FIELD_STOP. This work around requires these registers reload every time the system power up and standard change. Indirect Register Address NTSC default PAL default AVID_FIELD1_START 229h 13h 24h AVID_FIELD2_START...
    on Jun 24, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    JEB
    OK thanks. Is it possible to blank pixels and/or lines without changing the position of the syncs?
    on Jun 25, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    Viet Dinh
    JEB, The TVP5150 can blank the whole screen but could not change to blank pixels and/or lines. Regards, Viet
    on Jun 25, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    JEB
    Can you give me a little more insight on the range of allowable values for each register and what the values mean?
    on Jun 25, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    Viet Dinh
    Hello JEB, Sorry for a delay but those registers are for active field start and stop. The range for each field in NTSC is 1 to 525/2 and PAL is 1 to 625/2. Regards, Viet
    on Jun 30, 2010

  • Forum Post: Re: TVP5150APBS Active Video Cropping

    JEB
    Hey Viet, Once again, thanks for the help. Ideally what I would like to do is control for each field: The line number where the V bit in the embedded sync transitions to 1, The line number where the V bit in the embedded sync transitions to 0, The line number where the F bit in the embedded...
    on Jul 1, 2010

  • Forum Post: TVP5150AM1 losing lock

    Drew Rainwater
    Hello, I'm using a TVP5150AM1 to decode a composite NTSC video signal that is being transmitted/received over an FM RF link. Occasionally, I see the Lost Lock Detect bit in Status Register #1 go high, along with a mixture of losing the color subcarrier, vertical sync, or horizontal sync lock (one...
    on Sep 29, 2010

  • Forum Post: Problem Using a TVP5150AM1 in PAL Mode

    seunghun lim
    Hi, Everybody. I faced problems using a TVP5150AM1. I am developing a car AVN with PLDS Loader + TCC8900 CPU(Telechips). In NTSC mode, there is a little bit flicker noise also. But in PAL mode, there are lots of flicker and 'Rainbow' effect(Please, forgive me. i don't know the...
    on Dec 1, 2010

  • Forum Post: TVP5150 Output drivers

    Jmax604
    Does anyone know if the ouput drivers of the TVP5150 are Tri-state capable? As far as I can tell, the output drivers are not tri-state capable. The device is being used with the output drivers multiplexed with another device. Looking for verification that there is no way to tri-state the output...
    on Dec 9, 2011

  • Forum Post: TVP5150 AVID signal adjustment

    marceta
    When I grab PAL signal AVID is active for 287.5 lines per field. Is there a way to make AVID active 288 lines i.e. to extend AVID from half to full line (first line in field 1, last line in field 2). Avoiding this half lines will make some things easier. Thanks In Advance Zoran Marceta
    on Apr 2, 2012

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