Packages

o

chisel3.util

MuxLookup

object MuxLookup extends MuxLookupObjIntf

Creates a cascade of n Muxs to search for a key value. The Selector may be a UInt or an EnumType.

Source
Mux.scala
Example:

  1. MuxLookup(idx, default)(Seq(0.U -> a, 1.U -> b))
MuxLookup(myEnum, default)(Seq(MyEnum.a -> 1.U, MyEnum.b -> 2.U, MyEnum.c -> 3.U))
Linear Supertypes
MuxLookupObjIntf, SourceInfoDoc, AnyRef, Any
Ordering
  1. Grouped
  2. Alphabetic
  3. By Inheritance
Inherited
  1. MuxLookup
  2. MuxLookupObjIntf
  3. SourceInfoDoc
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. Protected

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 _applyEnumImpl[S <: EnumType, T <: Data](key: S, default: T, mapping: Seq[(S, T)])(implicit sourceinfo: SourceInfo): T
    Attributes
    protected
  5. def _applyImpl[S <: UInt, T <: Data](key: S, default: T, mapping: Seq[(S, T)])(implicit sourceinfo: SourceInfo): T
    Attributes
    protected
  6. macro def apply[S <: EnumType, T <: Data](key: S, default: T)(mapping: Seq[(S, T)]): T

    key

    a key to search for

    default

    a default value if nothing is found

    mapping

    a sequence to search of keys and values

    returns

    the value found or the default if not

    Definition Classes
    MuxLookupObjIntf
  7. macro def apply[T <: Data](key: UInt, default: T)(mapping: Seq[(UInt, T)]): T

    key

    a key to search for

    default

    a default value if nothing is found

    mapping

    a sequence to search of keys and values

    returns

    the value found or the default if not

    Definition Classes
    MuxLookupObjIntf
  8. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  9. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  10. def do_apply[S <: UInt, T <: Data](key: S, default: T, mapping: Seq[(S, T)])(implicit sourceinfo: SourceInfo): T

    Definition Classes
    MuxLookupObjIntf
  11. def do_applyEnum[S <: EnumType, T <: Data](key: S, default: T, mapping: Seq[(S, T)])(implicit sourceinfo: SourceInfo): T

    Definition Classes
    MuxLookupObjIntf
  12. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  14. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  15. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  16. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  17. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  18. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  19. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  20. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  21. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  22. def toString(): String
    Definition Classes
    AnyRef → Any
  23. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  24. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  25. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

Inherited from MuxLookupObjIntf

Inherited from SourceInfoDoc

Inherited from AnyRef

Inherited from Any

Ungrouped

SourceInfoTransformMacro

These internal methods are not part of the public-facing API!

The equivalent public-facing methods do not have the do_ prefix or have the same name. Use and look at the documentation for those. If you want left shift, use <<, not do_<<. If you want conversion to a Seq of Bools look at the asBools above, not the one below. Users can safely ignore every method in this group!

🐉🐉🐉 Here be dragons... 🐉🐉🐉

These do_X methods are used to enable both implicit passing of SourceInfo while also supporting chained apply methods. In effect all "normal" methods that you, as a user, will use in your designs, are converted to their "hidden", do_*, via macro transformations. Without using macros here, only one of the above wanted behaviors is allowed (implicit passing and chained applies)---the compiler interprets a chained apply as an explicit 'implicit' argument and will throw type errors.

The "normal", public-facing methods then take no SourceInfo. However, a macro transforms this public-facing method into a call to an internal, hidden do_* that takes an explicit SourceInfo by inserting an implicitly[SourceInfo] as the explicit argument.