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Can switch SJA1105R port 4 SGMII negotiate with link partner running 1000BASE-X?

Question asked by Dhruval Patel on Aug 1, 2018

Hi,

 

We are using SJA1105R  as a 5 port gigabit ethernet switch. All 4 RGMII port(0-3) works fine. Port 4 in this switch is hardwired to do SGMII in switch.  In our application port 4 is connected to link partner(other processor) which can only do 1000BASE-X. Application note "AH1704" suggest that "1000Base-X Clause 37 Auto-Negotiation" is not supported.

 

User manual for  SJA1105R  also suggest that "1000Base-X Clause 37 Auto-Negotiation" is not supported. We have tried different things to make this interface work. 

 

We have some basic question as follows

 

1. Can SGMII port of SJA1105R  be able to do 1000BASE-X ?

2. If yes do you have ant pointers/app notes/docs to make it works?

 

Thank you in advance

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