November 2014

DocID027178 Rev 1

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AN4623

Application note

Memory monitoring using JDC module

Introduction

The document describes how to implement an application allowing an external tool to

monitor the memory of the device by the JTAG pins. It uses the JTAG Data Communication

(JDC) module to implement this monitor using only JATG pins.

The JDC module captures data into a memory mapped register that can be accessed via

IPS for output via JTAG port.

The application is tested and validated using SPC574S60xx target and Lauterbach

TRACE32 as external tool but it is valid for all targets with JDC modules listed below:

• SPC574K70xx

• SPC57EM80xx

• SPC574S60xx

• SPC570S50xx

• SPC572L64xx

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