CodePudding user response:
Don't know what you want is what kind of chips, used in where? Taobao has a lot of TTL Ethernet, need a few so took a few, and double front-end ports development board, the nano PI is cheaper,CodePudding user response:
RTL8304E - CGSINGLE - CHIP 4 - PORT 10/100 MBPS ETHERNET SWITCH CONTROLLER WITH DUAL MII/RMII interface
https://www.realtek.com/en/products/communications-network-ics/item/rtl8304e-cg