摘要
本文介绍了DS21554在数字程控交换机中,级联方式下的帧格式数据收发、信令处理以及HDLC功能的运用,并给出了部分相关程序、电路图和时序图。
E1 can be used in digital PBX as the interface of communication equipments. Generally, the equipments only needto be grade-linked in stead of speed matching to improve integration degree and stability of the board. DS21554—the E1 transceiver can achieve them with receiving and transceiving frame data, signaling process and HDLC.
出处
《电子设计应用》
2003年第9期15-17,4,共3页
Electronic Design & Application World
