TMUXHS4212: TMUXHS4212 Mux For 10/100Mbps SGMII

Junehar Kevin J

Part Number: TMUXHS4212

Hi Team,

We are using TMUXHS4212 as MUX for 10/100Mbps SGMII.

This is our architecture. In this from processor out and Mux in we are getting the waveform but, in the mux out we are not getting any waveforms.

Please share some debug procedures at the earliest.

Thanks

Kevin

0 Brian Zhou over 1 year ago

Hi Kevin:

Did you connect RSVD1/2 to pin VCC? Can you send schematic for review?

Regards

Brian

0 Junehar Kevin J over 1 year ago in reply to Brian Zhou

Hi Brian,

Please find the schematics, in schematics we made a mistake the RSVD pins are not connected with VCC.
But we tried two things,

1. Changed VCC to 1.8V still we didn't get the output.

2. Changed RSVD to 3.3V (VCC - 3.3V) with this also we didn't get the output.

Our configuration MUX_EN - Pullup and MUX_SEL - Pull Down

Please share your comments at the earliest.

Thanks

Kevin

0 Brian Zhou over 1 year ago in reply to Junehar Kevin J

Hi Kevin:

OEn is active low to enable the mux, but you still need to pull RSVD pin to VCC.

Regards

Brian

+1 Junehar Kevin J over 1 year ago in reply to Brian Zhou

Hi Brian,

We got the output, thanks for the support.

Thanks

Kevin

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