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A question about TVP5150

Ray 16078
Prodigy 40 points
Other Parts Discussed in Thread: TVP5150

I use TVP5150 as decoder, a composite PAL video as TVP5150 input siganl connected to AIP1A. FPGA config TVP5150 through I2C bus. I follow the datasheet of TVP5150 to send 09h to register 03h.
The I2C communication wave in oscilloscope is right, but the TVP5150 Y output is always FFh.
Who can give me some hints? Thanks!

  • 0
    Genius 4530 points

    Hi Ray,

    At what speed are you operating the I2C bus?

    The I2C communication wave might be correct, but the time period might be a little too small so successfully configure TVP5150 register.

    Normally, try keeping the I2C bus speed around 100 KHz.

    Hope this helps.

    Regards,

    Sid