• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 346 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.

vss_osc gnd design

Daniel Cheng1
Mastermind 7075 points
Part Number: AM3358

Hi Expert,

I check the am335x_gpevm sch,

May I design the VSS_OSC GND as below?single point GND?

Could you give some suggestions about the VSS_OSC GND layout?

Thanks

Daniel

  • 0
    TI__Mastermind 42545 points

    Hi Daniel,

    In more recent designs we have moved away from the isolated VSS_OSC connection.  The schematic you included accurately represents what we have implemented on the AM574x GP EVM but we included a zero ohm resistor between GND_OSC0 (shown as vssa_osc1 in the image below) and the ground plane for the board.  The VSS_OSC pin is connected with an internal trace to the small plane under the crystal. The resistor acts as a single point of contact between the ground for the crystal circuit and the board ground.

    Regards, Bill