SK-TDA4VM: Refclk for SGMII / XFI

EyalCo

Expert 3590 points

Part Number: SK-TDA4VM
Other Parts Discussed in Thread: TDA4VM, DRA821, TDA4VH

Do we need an external refclk for DP/SGMII/XFI?

Thanks!

over 3 years ago

0 ShreyasRao over 3 years ago

TI__Guru 64160 points

Eyalco,

You have internal ref clk support for TDA4VM for the interfaces mentioned. Are you using the 2-L Serdes or 4-L Serdes?

SGMII uses 100MHz/156.25MHz

DP uses 19.2MHz HFOSC clk.

XFI is currently not supported on TDA4VM.

0 ShreyasRao over 3 years ago

TI__Guru 64160 points

Do you need XFI to be supported? In that case, you will have to consider DRA821 or TDA4VH which also supports dual ref clk support for multi-protocol support.

0 EyalCo over 3 years ago in reply to ShreyasRao

TI__Expert 3590 points

Hi, you can close the thread as Robert already addressed my question.

Thanks for your help.

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SK-TDA4VM: Refclk for SGMII / XFI