Abstract:According to the analysis of electromagnetism environment of electronic products,some reasons of electromag— 4 _' r1 J" L/ f+ q" ]netic compatibility(EMC)in high speed Digital Signal Processing (DSP)system are analyzed.The correlation techniques are - M8 R2 E* ~9 H; egiven tO effectively reduce the interference of DSP system ,including multilayer design,DSP com ponents distribution,power 9 `. E1 a, r" r2 Q/ nand Input/Output(I/O)interface distribution and PCB routing.These can ensure the validity and reliability of high speed DSP + s# _4 V6 v1 z' O M4 Lsystem at design levels. % q! w( Z! F8 s+ Z3 gKeywords:electromagnetic compatibility;DSP;anti—jamming;PCB routin