We are using DP83822 (single port 10/100 Mbps Ethernet PHY Transceiver) connected to SOC(zynq 7020) in one of our designs , The electrical interface (RJ-45) is tested and is working fine.We have made necessary Hardware modifications to connect to the Fiber Interface, But we are facing issues while configuring the Fiber interface.We use PC and optical modem connecting it through SFP, the ping is working but have packet loss .
we have check the important RMII signal (Clock and TX timing, setup and hold time, clock rise/fall time) between MAC and PHY, according to the datasheet, the signal is OK.
So, maybe there is something wrong between the optical module and PHY, here is the schematic and optical module datasheet ,please help me check, thanks.AFBR-5803AQZ and AFBR-5803ATQZ.pdfPAGE06_DP83822.pdf