"ARM核心内部NIC-400总线架构手册"

ARM

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Introduction

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1.2 Key features

The CoreLink NIC-400 Network Interconnect is a highly configurable interconnect component

that supports:

• 1-64 slave interfaces that can be:

— AXI3.

— AXI4.

— AHB-Lite slave interface.

— AHB-Lite mirrored master interface.

• 1-128 master interfaces that can be:

— AXI3.

— AXI4.

— AHB-Lite master interface.

— AHB-Lite mirrored slave interface.

—APB3.

—APB4.

• Hierarchical clock gating.

• Configuration of:

— An APB AMIB can have up to 16 subports. Each subport can be APB3 or APB4.

— An AXI port to support four region control bits.

— An AXI port to support Quality of Service (QoS) signaling.

• Single-cycle arbitration.

• Full pipelining to prevent master stalls.

• Programmable control for FIFO transaction release.

• Multiple switch networks.

• Complex topologies, including Network on Chip (NoC) loop-back connections between

switches.

• Up to five cascaded switch networks between any master and slave interface pair.

• AXI or AHB-Lite masters and slaves with:

— An address width of 32-64 bits.

— A data width of 32, 64, 128, or 256 bits.

• Non-contiguous APB slave address map for a single master interface.

• Independent widths of user-defined sideband signals for each channel.

• Global Programmers View (GPV) for the entire interconnect that you can configure so

that any master, or a discrete configuration slave interface, can access it.

• Highly flexible timing closure options.

• Hierarchical clock gating to reduce idle or near idle power.

Introduction

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1.3 IP Tooling

You can configure the NIC-400 using different Arm IP Tooling, as follows:

• Arm AMBA Designer (ADR-400).

• Arm

Socrates

™

System Builder.

Note

The Socrates DE, CoreSight

™

Creator, and CoreLink

™

Creator tools have been integrated into

the Socrates System Builder platform.

You still have access to the same functionality with Socrates System Builder as you had

previously, and no changes are required to your license features, license files or license server

set up.

1.3.1 Relationship between NIC-400 and AMBA Designer

AMBA Designer is a configuration tool that generates a specific implementation of a CoreLink

NIC-400 Network Interconnect. AMBA Designer drives the CoreLink NIC-400 Network

Interconnect generation engine to provide the following for a set of configuration parameters

and implementation scripts:

• Verilog Register Transfer Level (RTL).

• Testbench and stimulus.

• Synthesis scripts.

The documentation suites and implementation scripts for the CoreLink NIC-400 Network

Interconnect and AMBA Designer are used together. They describe the principles of the

CoreLink NIC-400 Network Interconnect and the configuration options. There is no duplication

between the two sets of documentation. The following sections describe the information that

each documentation suite provides:

• CoreLink NIC-400 Network Interconnect documentation on page 1-6.

• AMBA Designer documentation.

• Documentation for optional CoreLink features on page 1-6

AMBA Designer documentation

The AMBA Designer User Guide describes how to:

• Generate and verify RTL subsystems of Arm IP.

• Stitch Arm components together. Arm components conform to the IP-XACT standard

from the SPIRIT Consortium.

The Arm

CoreLink

™

NIC-400 Supplement to Arm

CoreLink

™

AMBA

Designer User Guide

describes how to produce a customized Network Interconnect component. The supplement

provides configuration guidance.

1.3.2 Relationship between NIC-400 and Socrates System Builder

The Socrates System Builder tool guides you through configuring and integrating an optimized

and viable CoreLink Interconnect. You can iterate over your CoreLink Interconnect

configuration flow to refine your design and perform checks that ensure validity and correctness

at every stage.

It can generate a NIC-400 and the components that you need to connect the NIC-400 across

power and voltage domains, using TLX-400 and ADB-400 connections, respectively.

Introduction

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Socrates System Builder Documentation

The Arm

CoreLink

™

Network Interconnects User Guide describes how to:

• Acquire and configure IP into your SoC.

• Use Design Rule Checks to check your designs.

• Integrate IP.

• Compare Design Data.

1.3.3 Documentation relevant to AMBA Designer and Socrates System Builder

NIC-400 and its optional features provide documentation to use along with AMBA Designer or

Socrates System Builder documentation.

CoreLink NIC-400 Network Interconnect documentation

The CoreLink NIC-400 Network Interconnect documentation consists of:

Technical Reference Manual

The Technical Reference Manual (TRM) describes how to create the transfer

function of a network interconnect component, the features and functions

available, and how to dynamically change the transfer function using the

programmers model.

Implementation Guide

The Implementation Guide (IG) describes how to set up the network environment

and how to use it to run RTL simulations or implementation scripts.

Integration Manual

The Integration Manual (IM) describes how to integrate a configured network

into a larger subsystem.

Documentation for optional CoreLink features

The optional CoreLink NIC-400 Network Interconnect documentation consists of:

QoS-400 Supplement to NIC-400 TRM

The QoS Supplement to TRM describes programmable QoS facilities for

attached AMBA masters that support read and write QoS requests.

QVN-400 Supplement to NIC-400 TRM

The QVN Supplement to TRM describes a mechanism to avoid head-of-line

blocking and cross-path blocking between different data flows.

TLX-400 Supplement to NIC-400 TRM

The TLX Supplement to TRM describes a mechanism to reduce the number of

signals in an AXI point-to-point connection and enable it to be routed over a

longer distance.

Note

These optional features are obtained through licenses for QoS-400, QVN-400, and TLX-400

products in addition to the license required for the NIC-400 base product.

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