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iMX6 input RGMII clocks in the MCIMX6SX SDB

Question asked by Vadim Aleynikov on Jul 9, 2016
Latest reply on Jul 11, 2016 by Vadim Aleynikov

Hello.

Answers in many threads explicitly state that the ENET_REF_CLK iMX6 input must be driven by a 125MHz external source. But MCIMX6SX SDB schematics show C346 and R134 as "DNP", so the ENET1_TX_CLK (#A7) pin isn't connected.

 

1. Are the MCIMX6SX SDB schematics correct? Are C346 and R134 are populated? Or the  ENET1_TX_CLK  pin is connected to a 125MHz source in another way.

 

2. If every used RGMII use its own (separate) ENET_REF_CLK input or they can share one iMX6 input?

Best regards,

Vadim Aleynikov

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