TLK2711-SP: Schematic check

Marvn Arcangel

Genius 16830 points

Part Number: TLK2711-SP

Hi Experts,

Would you kindly check the schematic below and confirm if the pullup, pulldown and caps are enough?

Thanks and regards,

Marvin

0 Brian Zhou 1 month ago

is this the same request?

Best

Brian

0 Marvn Arcangel 1 month ago in reply to Brian Zhou

Hi Brian,

This is for a different customer.

Regards,

Marvin

0 Brian Zhou 1 month ago in reply to Marvn Arcangel

Hi Marvn:

there is no need to add external resistors for since there are internal PU/PD resistors.

external 4.7K pull-up resistors for ENABLE, LOCKREFN

external 10K pull-down resistors for LOOPEN, PRE, PRBSEN, TKLSB, TKMSB.

For TDx pins, if not used, external PU or PD are needed.

Best

Brian

0 Marvn Arcangel 22 days ago in reply to Brian Zhou

Hi Brian,

I have follow up question. There seems to be a contradiction in the datasheet:

On page 5 (Pin 43), the datasheet states:

However, Section 6.3.9 contradicts this:

And Section 6.3.12 further confirms:

It appears to me that All 16 RXD pins (RXD0–RXD15) are synchronized to RXCLK, not just RXD0-9. Can you confirm?

Regards,

Marvin

0 Brian Zhou 22 days ago in reply to Marvn Arcangel

correct, All 16 RXD pins (RXD0–RXD15) are synchronized to RXCLK.

Best

Brian

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