ARM AMBA NIC-301 User Manual

Page 15

Introduction

ARM DDI 0397G

1-6

ID031010

Non-Confidential

r1p2-r2p0 Contains the following differences in functionality:

•

Network of interconnects instead of a single interconnect

•

Optimized translation latency replaces additive translation latency

•

Single cycle arbitration instead of arbitration switching delay

•

Enhanced buffering to reduce stalls

•

Multiple outstanding downsizer transactions instead of limited outstanding
downsizer transactions

•

Upsizer packs data into the wide bus, instead of an expander, for data width
changes

•

Global dynamic QoS instead of local static QoS

•

Internally programmable instead of externally programmed

•

System-level address map replaces an address map for each interconnect

•

Extended timing closure options replace limited timing closure options

•

256-bit maximum data width instead of 128-bit maximum data width

•

Multi-region slave support replaces a single region per slave

•

Write FIFO, transaction release control instead of fixed write transaction
release point.

r2p0-r2p1 Contains no differences in functionality.