Multicore Bus Architecture With Wire Reduction and Physical Congestion Minimization Via Shared Transaction Channels

摘要

The Multicore Bus Architecture (MBA) protocol includes a novel technique of sharing the same physical channel for all transaction types. Two channels, the Transaction Attribute Channel (TAC) and the Transaction Data Channel (TDC) are used. The attribute channel transmits bus transaction attribute information optionally including a transaction type signal, a transaction ID, a valid signal, a bus agent ID signal, an address signal, a transaction size signal, a credit spend signal and a credit return signal. The data channel connected a data subset of the signal lines of the bus separate from the attribute subset of signal lines the bus. The data channel optionally transmits a data valid signal, a transaction ID signal, a bus agent ID signal and a last data signal to mark the last data of a current bus transaction.

主权项

1. A bus agent operable to exchange information on a bus, comprising:
an attribute channel connected to an attribute subset of signal lines the bus, said attribute channel operable to transmit bus transaction attribute information via the attribute subset of signal lines; and a data channel connected a data subset of the signal lines of the bus separate from the attribute subset of signal lines the bus, said data channel operable to transmit data via the signal lines of the bus.