电子器件Issue(3)：543-547,5.DOI:10.3969/j.issn.1005-9490.2015.03.014
基于FPGA的通用PCM接收解码电路的设计
The Design of General PCM Receiving and Decoding Circuit
谢秀峰 1苏淑靖1
作者信息
- 1. 中北大学电子测试技术重点实验室，太原030051
- 折叠
摘要
Abstract
In order to accurately extract the PCM( Pulse Code Modulation) data received from a telemetry system,a common PCM receiving and decoding circuit based on FPGA is designed. The circuit can receive PCM data of dif-ferent rate by using the bit synchronizer based on phase-locked loop. Its frame synchronizer is based on three-state searching theory so that it can distinguish the data with different structure. The code converter module can convert the six patterns that is NRZ-L/M/S,BiФ-L/M/S. At last the demodulated data is sent to the computer through the USB interface for storage,display and processing. The decoding circuit can identify PCM data stream which has dif-ferent rates, different patterns and different frame synchronizing code groups. It has both single-ended and differential input interfaces,so it has strong versatility in the field of telemetry.关键词
PCM/FPGA/通用/位同步/帧同步Key words
PCM/FPGA/general/bit synchronize/frame synchronize分类
信息技术与安全科学引用本文复制引用
谢秀峰,苏淑靖..基于FPGA的通用PCM接收解码电路的设计[J].电子器件,2015,(3):543-547,5.
