• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 317 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TLK2711-SP: tlk2711A power up pins state

assaf matia
Prodigy 240 points
Part Number: TLK2711-SP

hi,

I havent saw any detailed info on TLK2711A on this but there was more info on TLK2711-SP:

my plan is never use the RX and only use the device as transmitter only.

this is why I plan tie the LCKREFN to pull down resistor to ground.

when powering up the device, even though I dont want to use the RX, do I need to assert high the LCKREFN and after power up completed a few milisec after place it in constant "0"?

similar question to ENABLE pin, in powerup diagram of the TLK2711-SP (I am using TLK2711A, but still...) it seems that  ENABLE need to be "1" prior to power up the supplies (same as LCKREFN).

is this a must?

will the device work correctly if ENABLE is low during power up and only when I want to transmit data through TXD->DOUT I can set the ENABLE to "1"?

will the device work correctly if LCKREFN is low during power up and stay low all the time?

  • 0
    TI__Mastermind 19235 points

    See my inputs below.

    when powering up the device, even though I dont want to use the RX, do I need to assert high the LCKREFN and after power up completed a few milisec after place it in constant "0"?

    • Yes

    similar question to ENABLE pin, in powerup diagram of the TLK2711-SP (I am using TLK2711A, but still...) it seems that  ENABLE need to be "1" prior to power up the supplies (same as LCKREFN). is this a must?

    • TLK2711A is no longer in production. You need to move to TLK2711-SP
    • Per datasheet, "Upon application of minimum valid power and valid GTX_CLK with device enabled (ENABLE = HIGH), the TLK2711-SP generates a power-on reset." I would suggest for ENABLE to be set high during power-up

    Thanks,

    Rodrigo Natal

    HSSC Applications Engineer