Stream Types

Streaming Types.

Classes:

Name	Description
ValidType	Valid Type.
AcceptType	Accept Type.
AStreamType	Abstract Stream Type.
StreamType	Simple Stream Type with one data signal.
AnyStreamType	Any Stream Type.

ValidType

Bases: AEnumType

Valid Type.

A signal of that type indicates if the related data is valid, driven by the transmitter.

>>> import ucdp_glbl
>>> valid = ucdp_glbl.stream.ValidType()
>>> valid
ValidType()
>>> valid.width
1
>>> for item in valid.values(): print(item)
EnumItem(0, 'invalid')
EnumItem(1, 'valid')

AcceptType

Bases: AEnumType

Accept Type.

A signal of that type indicates if the related data is taken over, driven by the receiver.

>>> import ucdp_glbl
>>> accept = ucdp_glbl.stream.AcceptType()
>>> accept
AcceptType()
>>> accept.width
1
>>> for item in accept.values(): print(item)
EnumItem(0, 'busy')
EnumItem(1, 'ready')

AStreamType

Bases: AStructType

Abstract Stream Type.

A stream contains at least a valid and accept member. It is up to the child classes to define the corresponding data.

StreamType

Bases: AStreamType

Simple Stream Type with one data signal.

>>> import ucdp_glbl
>>> stream = ucdp_glbl.stream.StreamType(8)
>>> for item in stream.values(): print(item)
StructItem('valid', ValidType())
StructItem('accept', AcceptType(), orientation=BWD)
StructItem('data', UintType(8))

AnyStreamType

Bases: AStreamType

Any Stream Type.

>>> import ucdp_glbl
>>> stream = ucdp_glbl.stream.AnyStreamType(u.SintType(16))
>>> for item in stream.values(): print(item)
StructItem('valid', ValidType())
StructItem('accept', AcceptType(), orientation=BWD)
StructItem('data', SintType(16))