1. Board Overview
The FMC Gigabit Ethernet module is a 4-way 10/100/1000Mbps adaptive Ethernet communication interface module. The Gigabit PHY chip of the FMC module uses 4 JL2121 Ethernet PHY chips from Jinglue Semiconductor, supporting 10/100/1000 Mbps network transmission rate. The 4-way network interface uses the commonly used RJ45 connector to connect and communicate with the external network. The module has a standard LPC FMC interface for connecting to the FPGA development board. The FMC connector model is: ASP_134604_01.

FL2121 Gigabit Ethernet Module Dimensions

Principle design block diagram of FL2121 module
2. Parameter description of FL2121 module
● Gigabit Ethernet chip: 4 pieces of JL2121
● Network interface: 4-way RJ45;
● Ethernet communication rate: support 10/100/1000 Mbps;
● Communication method: RGMII;
● Configuration interface: MDIO interface;
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Working temperature: -40°~85°;