LMK00334: i ned a tmds clock syncroniser

Varga Janos

Part Number: LMK00334

hello. i have a question i have two diferential lvds clock from two separate hdmi source and i want to synchronize the two diferential clock.

I would like to use LMK00334, maybe or if you can recommend a new one. THX

over 6 years ago

0 Liam Keese over 6 years ago

TI__Genius 12705 points

Hello,

For synchronizing two frequencies, one option would be to use one HDMI input as a reference source to a PLL and have the other derived from the first. These would then be aligned with some propagation delay.

Could you be more specific about what frequencies you are looking to support?

Regards,

Liam

0 Varga Janos over 6 years ago in reply to Liam Keese

Prodigy 60 points

Hello I want to synchronize from three sources of hdmi the pixel clock(clok+,clock-), so one of the sources will be the reference and the other two sources will be synchronized with the reference, the maximum frequency will be 133Mhz
.
Theoretically I think if I could synchronize the pixel  clock I could make a fast switch.

I use tmds442 hdmi switch with 3 inputs and two outputs, my customer want fast switching.

If you could give me an idea which circuit to use I would really appreciate it thx.

0 Hao Z over 6 years ago in reply to Varga Janos

TI__Mastermind 18070 points

Hi Varga,

If you can use one as reference and get the others from the reference, then there's a long list of TI clock gens to select from, depending on performance requirements. Please refer to the selection guide: http://www.ti.com/clock-and-timing/generators/products.html

Regards,

Hao

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LMK00334: i ned a tmds clock syncroniser