diff --git a/src/main/scala/backBoard/shin/Interface.scala b/src/main/scala/backBoard/shin/Interface.scala
index 566079b..e6c7a88 100644
--- a/src/main/scala/backBoard/shin/Interface.scala
+++ b/src/main/scala/backBoard/shin/Interface.scala
@@ -52,6 +52,10 @@ class CommonRegisterBundle extends Bundle{
   val refTop = UInt(3.W)
   val bias   = UInt(2.W)
 
+  val dwupEx   = UInt(16.W)
+  val b8b4Sel  = UInt(16.W)
+  val cdrParam = UInt(16.W)
+
 
   val softResetCode = Vec(4, UInt(8.W))
 
@@ -295,7 +299,20 @@ abstract class InterfaceBase extends Module with RequireAsyncReset{
         (addr === ("h48".U(16.W) + i.U) ) -> cReg.xtal( 8*i+7,8*i+0 )
       }) ++
 
+
+      ((0 until 2).map{ i =>
+        (addr === ("h4c".U(16.W) + i.U) ) -> cReg.b8b4Sel( 8*i+7,8*i+0 )
+      }) ++
+
+      ((0 until 2).map{ i =>
+        (addr === ("h4e".U(16.W) + i.U) ) -> cReg.cdrParam( 8*i+7,8*i+0 )
+      }) ++
+
       Seq(
+        (addr === "h4a".U ) -> cReg.dwupEx.extract(0),
+        (addr === "h4c".U ) -> cReg.b8b4Sel.extract(0),
+        (addr === "h4e".U ) -> cReg.cdrParam(7,0),
+
         (addr === "h50".U ) -> cReg.anamuxSel,
         (addr === "h51".U ) -> cReg.ldo2p5,
         (addr === "h52".U ) -> cReg.ldo1p1,
@@ -1087,6 +1104,24 @@ trait InterfaceSystem{ this: InterfaceBase =>
   cReg.softResetCode(3) := RegEnable(dataw, 0.U(8.W), isEnW & addrw === "h43".U )
 
 
+  cReg.dwupEx   := 
+    Cat(
+      RegEnable(dataw, 0.U(8.W), isEnW & addrw === "h4b".U ),
+      RegEnable(dataw, 0.U(8.W), isEnW & addrw === "h4a".U )
+    )
+
+  cReg.b8b4Sel  := 
+    Cat(
+      RegEnable(dataw, 0.U(8.W), isEnW & addrw === "h4d".U ),
+      RegEnable(dataw, 0.U(8.W), isEnW & addrw === "h4c".U )
+    )
+  cReg.cdrParam := 
+    Cat(
+      RegEnable(dataw, 0.U(8.W), isEnW & addrw === "h4f".U ),
+      RegEnable(dataw, 0.U(8.W), isEnW & addrw === "h4e".U )
+    )
+
+
   cReg.intEnable :=
     Cat(
       1.U(1.W), //复位中断，时钟为1 //31 上电复位
diff --git a/src/main/scala/backBoard/shin/MstSlvSwitch.scala b/src/main/scala/backBoard/shin/MstSlvSwitch.scala
index 07eeda8..8ade497 100644
--- a/src/main/scala/backBoard/shin/MstSlvSwitch.scala
+++ b/src/main/scala/backBoard/shin/MstSlvSwitch.scala
@@ -472,41 +472,78 @@ class MstSlvSwitch extends MstSlvSwitchBase
 with MstSlvSwitchMaster
 with MstSlvSwitchSlave
 with MstSlvSwitchWatchDog{
+  val isDwUpEx = interface.io.cReg.dwupEx(15,8) === "h58".U && interface.io.cReg.dwupEx.extract(0)
 
 
-
-  when( interface.io.cReg.modeSel === false.B ){ //slave
-    when( (slaveParser.io.intHWTrig(0) | slaveParser.io.intHWTrig(1)) | interface.io.isPoReset ){ //硬件错误
+  when( ~isDwUpEx ){ //未交叉
+    when( interface.io.cReg.modeSel === false.B ){ //slave
+      when( (slaveParser.io.intHWTrig(0) | slaveParser.io.intHWTrig(1)) | interface.io.isPoReset ){ //硬件错误
+        io.downCDRIn.serDat  := false.B
+        io.upCDRIn.serDat  := false.B
+        when( slaveParser.io.isLoop ){ //回环
+          io.dDatOut := false.B
+          io.uDatOut := io.dDatIn
+        } .otherwise{ //非回环
+          io.dDatOut := io.dDatIn
+          io.uDatOut := io.uDatIn      
+        }
+      } .otherwise{ //无硬件错误
+        when( slaveParser.io.isLoop ){ //回环
+          io.downCDRIn.serDat  := io.dDatIn
+          io.upCDRIn.serDat    := io.downCDROut.serDat
+          io.dDatOut := false.B
+          io.uDatOut := io.upCDROut.serDat 
+        } .otherwise{ //非回环
+          io.downCDRIn.serDat  := io.dDatIn
+          io.upCDRIn.serDat    := io.uDatIn
+          io.dDatOut := io.downCDROut.serDat
+          io.uDatOut := io.upCDROut.serDat
+        }
+      }
+    } .otherwise{ //master
       io.downCDRIn.serDat  := false.B
-      io.upCDRIn.serDat  := false.B
-      when( slaveParser.io.isLoop ){ //回环
-        io.dDatOut := false.B
-        io.uDatOut := io.dDatIn
-      } .otherwise{ //非回环
-        io.dDatOut := io.dDatIn
-        io.uDatOut := io.uDatIn      
-      }
-    } .otherwise{ //无硬件错误
-      when( slaveParser.io.isLoop ){ //回环
-        io.downCDRIn.serDat  := io.dDatIn
-        io.upCDRIn.serDat    := io.downCDROut.serDat
-        io.dDatOut := false.B
-        io.uDatOut := io.upCDROut.serDat 
-      } .otherwise{ //非回环
-        io.downCDRIn.serDat  := io.dDatIn
-        io.upCDRIn.serDat    := io.uDatIn
-        io.dDatOut := io.downCDROut.serDat
-        io.uDatOut := io.upCDROut.serDat
-      }
+      io.upCDRIn.serDat    := io.uDatIn
+      io.dDatOut := io.downCDROut.serDat
+      io.uDatOut := false.B
+    }
+  } .otherwise{ //交叉
+    when( interface.io.cReg.modeSel === false.B ){ //slave
+      when( (slaveParser.io.intHWTrig(0) | slaveParser.io.intHWTrig(1)) | interface.io.isPoReset ){ //硬件错误
+
+        when( slaveParser.io.isLoop ){ //回环
+          io.dDatOut := io.uDatIn
+          io.uDatOut := false.B
+          io.downCDRIn.serDat  := false.B
+          io.upCDRIn.serDat  := false.B
+        } .otherwise{ //非回环
+          io.dDatOut := io.dDatIn
+          io.uDatOut := io.uDatIn   
+          io.downCDRIn.serDat  := false.B
+          io.upCDRIn.serDat  := false.B   
+        }
+      } .otherwise{ //无硬件错误
+        when( slaveParser.io.isLoop ){ //回环
+          io.downCDRIn.serDat  := io.uDatIn
+          io.upCDRIn.serDat    := io.downCDROut.serDat
+          io.uDatOut := false.B
+          io.dDatOut := io.upCDROut.serDat 
+        } .otherwise{ //非回环
+          io.downCDRIn.serDat  := io.uDatIn
+          io.upCDRIn.serDat    := io.dDatIn
+          io.dDatOut := io.upCDROut.serDat
+          io.uDatOut := io.downCDROut.serDat
+        }
+      }
+    } .otherwise{ //master
+      io.downCDRIn.serDat  := false.B
+      io.upCDRIn.serDat    := io.dDatIn
+      io.uDatOut := io.downCDROut.serDat
+      io.dDatOut := false.B
     }
-  } .otherwise{ //master
-    io.downCDRIn.serDat  := false.B
-    io.upCDRIn.serDat    := io.uDatIn
-    io.dDatOut := io.downCDROut.serDat
-    io.uDatOut := false.B
   }
 
 
 
 
+
 }