TRANSMISSION CONTROL CHECKING FOR INTERCONNECT CIRCUITRY

摘要

Transmission control checking circuitry adds control check data to a transaction response which is received at a transaction master and compared with expected data at the transaction master. The expected data having control check data may be a unique transaction identifier. The transaction master generated the unique transaction identifier when it generated the transaction request and will check that the transaction responses include that unique transaction identifier. In this way, errors in the control of transmission of transactions (e.g., misrouting) may be detected.

主权项

1. Apparatus comprising:
a transaction response receiver to receive a transaction response from one of one or more transaction slaves via interconnect circuitry, said transaction response including payload data and control check data; and control checking circuitry:
(i) to hold, prior to receipt of said transaction response, expected data corresponding to correct control of transmission of a transaction associated with said transaction response;(ii) to check, following receipt of said transaction response, if said control check data matches said expected data; and(iii) if said control check data does not match said expected data, then to trigger reporting of and action upon a detected error.