CDCE421A: Generate 48MHz LVDS differential clock.

chintan Gopani

Part Number: CDCE421A
Other Parts Discussed in Thread: LMK6H, LMK6P, LMK6D, LMK3H0102,

I want to generate 48MHz differential clock. Kindly let me know how to do programming and what value need to set during programming through SDATA.

What is the meaning of TI proprietaryinterface protocol? Is there any TI's tool required?

6 months ago

0 Andrea Vallenilla 6 months ago

TI__Genius 10975 points

Hello,

Our clock gen experts are out of office today and will be back tomorrow.

Best,

Andrea

0 Kadeem Samuel 6 months ago in reply to Andrea Vallenilla

TI__Genius 15390 points

Chintan,

If using only a single 48MHz differential clock, I would recommend using one of our oscillators, such as the LMK6D, LMK6P or LMK6H, depending on the output required: https://www.ti.com/lit/ds/symlink/lmk6c.pdf

Alternatively, the LMK3H0102 can be used, which is a reference-less clock generator: https://www.ti.com/lit/ds/symlink/lmk3h0102.pdf

For the CDCE421A, you will need to have a method of generating the data for the custom interface defined in Enter Programming Mode and EEPROM Programming. There is not a tool that we provide for generating this sequence. Both the LMK6x and LMK3H solutions are smaller BOM, smaller footprint, and easier to use than the CDCE421A, and either of those are recommended instead.

Thanks,

Kadeem

Clock & timing

Clock & timing forum

CDCE421A: Generate 48MHz LVDS differential clock.