An interface chip used as the RS485 bus controller based on HDLC protocol was introduced, which was written in VHDL at the RTL level and implemented by a single FPGA chip.是什么意思_An interface chip used as the RS485 bus controller based on HDLC protocol was introduced, which was written in VHDL at the RTL level and implemented by a single FPGA chip.在线翻译_英语_读音_用法_例句