1.6.2. Zero waitstate, registered fetch interface (ICODE)

Branch forwarding results in more aggressive timing on the ICODE interface. If this bus is a critical path in the system, the ICODE interface might be registered. To avoid an approximate 25% penalty of adding a wait state, you can add a circuit that acts as a single-entry prefetcher to avoid the push-pull problems of the registered interface.

Copyright © 2005, 2006 ARM Limited. All rights reserved.ARM DDI 0337E
Non-Confidential