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authorJack2022-01-12 04:27:19 +0000
committerJack2022-01-12 04:27:19 +0000
commit29df513e348cc809876893f650af8180f0190496 (patch)
tree06daaea954b4e5af7113f06e4bdbb78b33515cb3 /src/main/scala/chisel3/util/Reg.scala
parent5242ce90659decb9058ee75db56e5c188029fbf9 (diff)
parent747d16311bdf185d2e98e452b14cb5d8ccca004c (diff)
Merge branch 'master' into 3.5-release
Diffstat (limited to 'src/main/scala/chisel3/util/Reg.scala')
-rw-r--r--src/main/scala/chisel3/util/Reg.scala17
1 files changed, 8 insertions, 9 deletions
diff --git a/src/main/scala/chisel3/util/Reg.scala b/src/main/scala/chisel3/util/Reg.scala
index e2b5d172..ddb74dd6 100644
--- a/src/main/scala/chisel3/util/Reg.scala
+++ b/src/main/scala/chisel3/util/Reg.scala
@@ -5,6 +5,7 @@ package chisel3.util
import chisel3._
object RegEnable {
+
/** Returns a register with the specified next, update enable gate, and no reset initialization.
*
* @example {{{
@@ -13,7 +14,7 @@ object RegEnable {
*/
def apply[T <: Data](next: T, enable: Bool): T = {
val r = Reg(chiselTypeOf(next))
- when (enable) { r := next }
+ when(enable) { r := next }
r
}
@@ -25,13 +26,13 @@ object RegEnable {
*/
def apply[T <: Data](next: T, init: T, enable: Bool): T = {
val r = RegInit(init)
- when (enable) { r := next }
+ when(enable) { r := next }
r
}
}
-object ShiftRegister
-{
+object ShiftRegister {
+
/** Returns the n-cycle delayed version of the input signal.
*
* @param in input to delay
@@ -55,18 +56,17 @@ object ShiftRegister
* val regDelayTwoReset = ShiftRegister(nextVal, 2, 0.U, ena)
* }}}
*/
- def apply[T <: Data](in: T, n: Int, resetData: T, en: Bool): T = ShiftRegisters(in, n, resetData, en).lastOption.getOrElse(in)
+ def apply[T <: Data](in: T, n: Int, resetData: T, en: Bool): T =
+ ShiftRegisters(in, n, resetData, en).lastOption.getOrElse(in)
}
+object ShiftRegisters {
-object ShiftRegisters
-{
/** Returns a sequence of delayed input signal registers from 1 to n.
*
* @param in input to delay
* @param n number of cycles to delay
* @param en enable the shift
- *
*/
def apply[T <: Data](in: T, n: Int, en: Bool = true.B): Seq[T] =
Seq.iterate(in, n + 1)(util.RegEnable(_, en)).drop(1)
@@ -77,7 +77,6 @@ object ShiftRegisters
* @param n number of cycles to delay
* @param resetData reset value for each register in the shift
* @param en enable the shift
- *
*/
def apply[T <: Data](in: T, n: Int, resetData: T, en: Bool): Seq[T] =
Seq.iterate(in, n + 1)(util.RegEnable(_, resetData, en)).drop(1)