2.3.7. ATB Phantom Bridges

The ATB components described are compliant with the ATBv1.1 protocol which is defined as part of AMBA 4, and referred to here as ATB4. Some other ATB components might be compliant with the ATBv1.0 protocol which is defined as part of AMBA 3, and referred to here as ATB3. The only difference between ATB3 and ATB4 is the optional inclusion of the syncreq signal in ATB4.

Two phantom bridge components are provided to allow IP-XACT stitchers to connect components with ATB3 and ATB4 interfaces:

These phantom bridge components do not contain any logic - they guide stitching tools to make the correct connections between components that have been packaged according to the two different bus definitions.

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