I need to connect seventh port (SGMII) of KSZ9477S switch to AFBR5803AQZ optical transceiver (It's 100 Mbps). I wanted to use PHY with SGMII interface and fiber mode (VSC8658XHJ), but it's too expensive. I also found 88e1111 Marvell IC which should be able to convert SGMII to fiber interface, but it seems that it converts only to 1000BASE-FX while I need 100BASE-FX. Can somebody give me a clue how can I connect SGMII port of KSZ9477S switch IC to AFBR5803AQZ optical transceiver using cheaper solution?
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\$\begingroup\$ If the IC converts 1000 Base FX, it should also convert 100 Base FX, look for register settings in datasheet. Please add datasheet link, I will try to look as well. \$\endgroup\$– AKRNov 26, 2018 at 15:11
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\$\begingroup\$ Thank you for the response!) Here is the link to the datasheet link \$\endgroup\$– AndyNov 27, 2018 at 5:17
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\$\begingroup\$ Please correct me if I am wrong, there is not anything called as 1000BASE-FX and even Marvell IC doesn't show anything for 100BASE-FX. Sorry for late response. \$\endgroup\$– AKRDec 4, 2018 at 14:47
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The 88E1111 Product Brief says right on the cover "Integrated 10/100/1000 Ultra Gigabit Ethernet Transceiver". What more do you need?
answered Nov 26, 2018 at 15:14
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1\$\begingroup\$ Thank you for reply. Yes, indeed it says so. But according to the datasheet it seems that this IC can only convert from SGMII to 1000BASE-LX and 10/100/1000 numbers refer to copper mode (10BASE-TX/100BASE-TX/1000BASE-TX). Here is the link to the datasheet link \$\endgroup\$– AndyNov 27, 2018 at 5:46