diff --git a/src/main/scala/backBoard/shin/SlaveParser.scala b/src/main/scala/backBoard/shin/SlaveParser.scala
index 5bab42e..20ed09a 100644
--- a/src/main/scala/backBoard/shin/SlaveParser.scala
+++ b/src/main/scala/backBoard/shin/SlaveParser.scala
@@ -615,12 +615,12 @@ trait SlaveParserSync{ this: SlaveParserBase =>
 
 
   //更新下行本地时间戳寄存器
-  when( downRecParser.io.frameReq.fire ){
+  when( downRecParser.io.frameReq.fire & downRecParser.io.frameReq.bits.frameStyle === FRAME_STYLE_COMMON ){
     downTimeStamp := io.cReg.timeStamp
   }
 
   //更新上行本地时间戳寄存器
-  when( upRecParser.io.frameReq.fire ){
+  when( upRecParser.io.frameReq.fire & upRecParser.io.frameReq.bits.frameStyle === FRAME_STYLE_COMMON ){
     upTimeStamp := io.cReg.timeStamp
     slvDeltaTimeStamp := io.cReg.timeStamp - downTimeStamp
   }