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TLK1501 pclk

Jeff Wang100039
Intellectual 2780 points
Other Parts Discussed in Thread: TLK1501, SN65LVDS301, SN65LV1224B, SN65LV1023A

Hi,

my customer want to use TLK1501 in LED Wall to save cable cost. but theirs clk just 20.8Mhz.

per TLK1501 datasheet, min clk:  600mbps/20bit=30Mhz > 20.8Mhz.

So TLK1501 cannot support 20.8Mhz Pclk. right?

regards,
jeff

 

  • 0
    TI__Mastermind 20820 points

    Hi Jeff,


    20.8MHz is below our minimum GTX clock frequency so I so not recommend using the part in this manner as its behavior can be non deterministic. Have you looked into the SN65LVDS301/302/303/304/305 parts yet? These parts are aimed more at video application as they support pixel clock frequencies.

  • 0 in reply to Michael Peffers
    TI__Guru 62920 points

    Hi Jeff,

    In addition to the parts Mike mentioned, you may want to also take a look at the SN65LV1023A (serializer) and SN65LV1224B (deserializer) pair.  These can handle the lower parallel clock rate and have a single differential serial interface that is more similar to TLK1501 (instead of  using FlatLink/subLVDS).

    Best regards,
    Max