Packages

class Pipe[T <: Data] extends Module

Pipeline module generator parameterized by data type and latency.

This defines a module with one input, enq, and one output, deq. The input and output are Valid interfaces that wrap some Chisel type, e.g., a UInt or a Bundle. This generator will then chain together a number of pipeline stages that all advance when the input Valid enq fires. The output deq Valid will fire only when valid data has made it all the way through the pipeline.

As an example, to construct a 4-stage pipe of 8-bit UInts and connect it to a producer and consumer, you can use the following:

val foo = Module(new Pipe(UInt(8.W)), 4)
pipe.io.enq := producer.io
consumer.io := pipe.io.deq

If you already have the Valid input or the components of a Valid interface, it may be simpler to use the Pipe factory companion object. This, which Pipe internally utilizes, will automatically connect the input for you.

Source
Valid.scala
See also

Pipe factory for an alternative API

Valid interface

Queue and the Queue factory for actual queues

The ShiftRegister factory to generate a pipe without a Valid interface

Linear Supertypes
LegacyModule, MultiIOModule, RawModule, BaseModule, HasId, internal.InstanceId, AnyRef, Any
Type Hierarchy
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Inherited
  1. Pipe
  2. LegacyModule
  3. MultiIOModule
  4. RawModule
  5. BaseModule
  6. HasId
  7. InstanceId
  8. AnyRef
  9. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new Pipe(gen: T, latency: Int = 1)(implicit compileOptions: CompileOptions)

    gen

    a Chisel type

    latency

    the number of pipeline stages

Type Members

  1. class PipeIO extends Bundle

    Interface for Pipes composed of a Valid input and Valid output

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def IO[T <: Data](iodef: T): T
    Attributes
    protected
    Definition Classes
    BaseModule
  5. def _bindIoInPlace(iodef: Data): Unit
    Attributes
    protected
    Definition Classes
    BaseModule
  6. var _closed: Boolean
    Attributes
    protected
    Definition Classes
    BaseModule
  7. def _compatAutoWrapPorts(): Unit
    Definition Classes
    BaseModule
  8. def _compatIoPortBound(): Boolean
    Attributes
    protected
    Definition Classes
    LegacyModule
  9. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  10. def circuitName: String
    Attributes
    protected
    Definition Classes
    HasId
  11. val clock: Clock
    Definition Classes
    MultiIOModule
  12. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  13. val compileOptions: CompileOptions
    Definition Classes
    RawModule
  14. def desiredName: String
    Definition Classes
    BaseModule
  15. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. def equals(that: Any): Boolean
    Definition Classes
    HasId → AnyRef → Any
  17. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  18. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  19. def getCommands: Seq[Command]
    Attributes
    protected
    Definition Classes
    RawModule
  20. def getIds: Seq[HasId]
    Attributes
    protected
    Definition Classes
    BaseModule
  21. def getModulePorts: Seq[Data]
    Attributes
    protected[chisel3]
    Definition Classes
    BaseModule
  22. lazy val getPorts: Seq[Port]
    Definition Classes
    RawModule
  23. def hashCode(): Int
    Definition Classes
    HasId → AnyRef → Any
  24. def instanceName: String
    Definition Classes
    BaseModule → HasId → InstanceId
  25. val io: PipeIO
    Definition Classes
    Pipe → LegacyModule
  26. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  27. final lazy val name: String
    Definition Classes
    BaseModule
  28. def nameIds(rootClass: Class[_]): HashMap[HasId, String]
    Attributes
    protected
    Definition Classes
    BaseModule
  29. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  30. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  31. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  32. var override_clock: Option[Clock]
    Attributes
    protected
    Definition Classes
    LegacyModule
  33. var override_reset: Option[Bool]
    Attributes
    protected
    Definition Classes
    LegacyModule
  34. def parentModName: String
    Definition Classes
    HasId → InstanceId
  35. def parentPathName: String
    Definition Classes
    HasId → InstanceId
  36. def pathName: String
    Definition Classes
    HasId → InstanceId
  37. def portsContains(elem: Data): Boolean
    Attributes
    protected
    Definition Classes
    BaseModule
  38. def portsSize: Int
    Attributes
    protected
    Definition Classes
    BaseModule
  39. val reset: Reset
    Definition Classes
    MultiIOModule
  40. def suggestName(name: ⇒ String): Pipe.this.type
    Definition Classes
    HasId
  41. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  42. final def toAbsoluteTarget: IsModule
    Definition Classes
    BaseModule → InstanceId
  43. def toString(): String
    Definition Classes
    AnyRef → Any
  44. final def toTarget: ModuleTarget
    Definition Classes
    BaseModule → InstanceId
  45. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  46. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  47. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Deprecated Value Members

  1. final def toNamed: ModuleName
    Definition Classes
    BaseModule → InstanceId
    Annotations
    @deprecated
    Deprecated

    (Since version 3.2) toNamed API is deprecated -- use toTarget instead

Inherited from LegacyModule

Inherited from MultiIOModule

Inherited from RawModule

Inherited from BaseModule

Inherited from HasId

Inherited from internal.InstanceId

Inherited from AnyRef

Inherited from Any

Ungrouped