MAC7200 datasheet(207/976 Pages) FREESCALE

Part #	MAC7200

Description	MAC7200 Microcontroller Family Reference Manual

PDF	976 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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207 / 976 page

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

129

Chapter 11

A7S Nexus3 Module

11.1

Introduction

The A7S Nexus3 module provides real-time development capabilities for ARM7™ core based

microcontrollers in compliance with the IEEE-ISTO Nexus 5001. This module provides development

support capabilities for MCUs without requiring address and data pins for internal visibility.

A portion of the pin interface is also compliant with the IEEE 1149.1 JTAG standard. The IEEE-ISTO

5001 standard defines an extensible auxiliary port which, for ARM7, will be used in conjunction with the

JTAG port.

Figure 11-1. A7S Nexus3 Functional Block Diagram

mseo_b(0)

mcko

Nexus3 Block

JTAG/ICE Block (within ARM7 core)

JTAG/ICE

Breakpoint /

Watchpoint

Control

mdo(N:0)

tdo

tdi

tms

tck

trst_b

evto_b

rdy_b

evti_b

DMA Registers

Control/Status

Registers

Message

Queues

Memory

Control

mseo_b(1)

MAC7200 Datasheet(PDF) 207 Page - Freescale Semiconductor, Inc