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DP83620-EVK: DP83620-EVK: SFP Transceiver compatibility

Part Number: DP83620-EVK
Other Parts Discussed in Thread: DP83620, TIDA-00928

Hello,

 I'm working on  DP83620-EVK with  a 1000BASE-SX SFP Transceiver. But no traffic is observed.

The phy is configured in fiber mode (i.e: FX_EN):

  • If I set the loopback (MII) the packets are sent and received correctly (so the phy configuration seems correct).
  • If I create a loopback with the fiber, nothing is received.

I'm not sure about the compatibility between the phy and the transceiver.

Can a 100BASE-FX phy  work  with a 1000BASE-SX Transceiver or do the phy and tranceiver base have to match ?

Registers values:

[0x00]        0x2100     
[0x01]        0x78c9     
[0x02]        0x2000     
[0x03]        0x101     
[0x04]        0x0     
[0x05]        0x4     
[0x06]        0x3     
[0x07]        0x0     
[0x08]        0x14b     
[0x09]        0x1     
[0x0A]        0x21     
[0x0B]        0x2     
[0x0C]        0x0     
[0x0D]        0x0     
[0x0E]        0x0     
[0x0F]        0x0     
[0x10]        0x0     
[0x11]        0x0     
[0x12]        0x0     
[0x13]        0x0     
[0x14]        0x0     
[0x15]        0x0     
[0x16]        0x0     
[0x17]        0x0     
[0x18]        0x0     
[0x19]        0x0     
[0x1A]        0x0     
[0x1B]        0x0     
[0x1C]        0x0     
[0x1D]        0x0     
[0x1E]        0x0     
[0x1F]        0x0    

Best regards

Thibaut