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src/main/scala/backBoard/ebus/Axis8toN.scala.bk

@@ -0,0 +1,29 @@
+package BACK
+
+import chisel3._
+import chisel3.util._
+
+
+class Axis8toNIO_Bundle(dw: Int) extends Bundle{
+  val enq = Flipped(Decoupled(new AxisNto8IO_Bundle(8)))
+  val deq = Decoupled(new AxisNto8IO_Bundle(dw))
+}
+
+
+
+
+class Axis8toN(dw: Int) extends Module{
+
+  require( dw == 16 | dw == 32 | dw == 64 )
+  assert( io.deq.ready === true.B )
+
+  val io: Axis8toNIO_Bundle = IO(new Axis8toNIO_Bundle(dw))
+
+  val cnt = RegInit( 0.U( log2Ceil(dw/8).W ) )
+
+  val fifo = Reg( new AxisNto8IO_Bundle(dw) )
+
+
+
+}
+

src/main/scala/backBoard/ebus/AxisNto8.scala.bk

@@ -0,0 +1,48 @@
+package BACK
+
+import chisel3._
+import chisel3.util._
+
+
+class AxisNto8IO_Bundle(dw: Int) extends Bundle{
+  val enq = Flipped(Decoupled(new AxisNto8IO_Bundle(dw)))
+  val deq = Decoupled(new AxisNto8IO_Bundle(8))
+}
+
+
+class AxisNto8(dw: Int) extends Module{
+
+  require( dw == 16 | dw == 32 | dw == 64 )
+
+  val io: AxisNto8IO_Bundle = IO(new AxisNto8IO_Bundle(dw))
+
+  val cnt = RegInit( 0.U( log2Ceil(dw/8).W ) )
+  val isBusy = RegInit(false.B)
+
+  val fifo = RegEnable( io.enq.bits, io.enq.fire )
+  io.enq.ready := ~isBusy | (io.deq.fire & cnt.andR)
+
+
+
+
+  when( io.deq.fire ){
+    cnt := cnt + 1.U
+  }
+
+  when( io.enq.fire ){
+    isBusy := true.B
+  } .elsewhen( io.deq.fire & cnt.andR ){
+    isBusy := false.B
+  }
+
+
+
+
+  io.deq.valid := isBusy
+  io.deq.bits.tdata := fifo.tdata >> (cnt << 3)
+  io.deq.bits.tlast := fifo.tlast & cnt.andR
+  io.deq.bits.tuser := fifo.tuser & cnt.andR
+
+
+}
+

src/main/scala/backBoard/ebus/CDRIn.scala

@@ -6,7 +6,7 @@ import chisel3.util._
 
 //work in 100MHZ
 class CDRInIO extends Bundle{
-  val axis = Decoupled(new AXIS_Bundle)
+  val axis = Decoupled(new AXIS_Bundle(8))
   val serDat = Input(Bool())
   val overCLK = Input(Bool())
 }

src/main/scala/backBoard/ebus/CDROut.scala

@@ -3,15 +3,15 @@ package BACK
 import chisel3._
 import chisel3.util._
 
-class AXIS_Bundle extends Bundle{
-  val tdata = UInt(8.W)
+class AXIS_Bundle(dw: Int) extends Bundle{
+  val tdata = UInt(dw.W)
   val tlast = Bool()
   val tuser = Bool()
 }
 
 //work in 100MHZ
 class CDROutIO extends Bundle{
-  val axis = Flipped(Decoupled(new AXIS_Bundle)) 
+  val axis = Flipped(Decoupled(new AXIS_Bundle(8))) 
   val serDat = Output(Bool())
 }