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Serial wire debug for multiple devices

Hi

I want to use a single debugger in SWD mode and control upto 8 controllers.

How to achieve this ?  Is there any switch to connect to eight controllers and use one at a time like I2C switch

Or Can i use 8 buffers and connect each controller to one buffer output , and enable only one buffer at a given time

please help

  • Hello Akshay,

    What type of signals are they?  Push-Pull or Open Drain? 

    If it is push-pull, which is what I am assuming you are doing if it isn't I2C.  Then you can either use a MUX/SWITCH or use buffers that have enables.  You will have to analyze the system cost to see which one is most cost effective and still satisfied your system requirements. 

    I am going to move this post to the Switches and Multiplexers Forum for better support.

    -Francis Houde

  • In reply to fhoude:

    Hi 

    Thanks.

    I am using a silabs programmer to control eight  8051 controllers with single SWD.

    Yes 8 buffers should do my job with enable controls.

     

  • In reply to Akshay hublikar:

    Akshay,

    You can use the switch search tool on TI.com to look for 8:1 switches using the "configuration filter".  Do you think the SN74LV4051A will solve you problem? 

    Thank you,

    Adam

  • In reply to Adam Torma:

    thanks

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