Cyclone® V Hard Processor System Technical Reference Manual

ID 683126
Date 8/28/2023
Public
Document Table of Contents

10.4.2.3. Transaction Capabilities

At any one time, the ACP ID mapper can accept and issue up to 15 transactions per ID mapping. Read and write ID mappings are managed in separate lists, allowing more unique input IDs to be remapped at any given time. If a master issues a series of reads and writes with the same input ID, there are no ordering restrictions.

Because there are only six output IDs available, there can be no more than six read and six write transactions with unique IDs in progress at any one time. The write acceptance of the ACP slave is five transactions, and the read acceptance is 13 transactions. Only four coherent read transactions per ID mapping can be outstanding at one time.