• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 32 subscribers
  • Views 103 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TCAN1043A-Q1: Possibility of nFAULT = L and RXD = H in Standby Mode

Masaru Oinaga
Intellectual 2340 points
Part Number: TCAN1043A-Q1

Hello, Team,

Sorry to ask a simple question.

From the datasheet Table 8-1, it is stated that nFAULT pin only shows WAKERQ FLAG during the Standby Mode.

  1. Is it possible that nFAULT = L and RXD = H happens in a Standby Mode?
  2. If yes, in what cases does this occur?

Thank You and Best Regards,
Masaru Oinaga

  • +1
    TI__Expert 5755 points

    Hi Oinaga-san,

    This is not a possible case for Standby mode. Both nFAULT and RXD will be High if there has not been a wake-up request and VIO>UVIO in Standby mode. (If VIO not present that lead to VIO<UVIO , RXD will go High impedance)

    Once a wake-up request (WAKERQ) received, nFAULT and RXD will go low. 

    But nFAULT can be low in Normal mode for a few causes. In this state, RXD will be mirroring the bus state so it is possible RXD is high while nFAULT is low.

    Regards,

    Sean Guo