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Visitor II
February 12, 2024
Question

L9637D K Line Transceiver LO pin Functionality

  • February 12, 2024
  • 2 replies
  • 2289 views

Hello Concern,

We are considering the L9637D in one of our program as we are checking for LO pin functionality.
As there is very limited details in the datasheet.

 

Regards,
Shubham 

2 replies

Billy OWEN
ST Employee
February 12, 2024

Hi @samshubh421 

 

The forum moderator had marked your post as needing a little more investigation and direct support. An online support case has been created on your behalf, please stand by for just a moment and you will hear from us.

 

Regards,

Billy

Max VIZZINI
Technical Moderator
March 15, 2024

Hello,

 

Please find the answer from our expert below.

 

L9637D contains a bidirectional K-line. It is receiver when the K pin is driven by K_line and RX pin report translated signal to microcontroller. It is transmitter when the microcontroller drives TX pin and L9637D drives K-line.

 There is even L-line only as receiver. It is the same than K-line receiver. L_line protocol is almost the same than K-line protocol, but it is normally intended as unidirectional bus to program sensors. In L9637D, only receiver is implemented.

 

Best Regards,

AutoDevKit Team