Patent ID: 8595437
Filing Date: 2013-11-26
Classification: G06F

Abstract:
1. An intermediate cache coupled to one or more isochronous clients, one or more general clients, and to an external memory and configured to access compressed data and compression information stored in the external memory, the intermediate cache comprising: a compression status bit cache comprising a request miss buffer and a data store and configured to: the data cache unit configured to determine that the compression information for the compressed data is not resident in response to the request for the compressed information for the compressed data received from the compression status bit cache; and a memory interface coupled to the compression status bit cache and the data cache unit and configured (i) to transmit the compression information for the compressed data directly to the compression status bit cache bypassing the data cache unit when the first memory access request is received from an isochronous client, or (ii) to transmit the compression information to the data cache unit when the first memory access request is received from a general client, wherein the memory interface receives the compression information for the compressed data from the external memory in response to a request for the compression information transmitted to the external memory by either the compression status bit cache or the data cache unit.