Table of Contents
Advertisement
Preface
About this document
Intended audience
viii
This document is a reference manual for the ARM9TDMI microprocessor. The
ARM9TDMI includes the following features:
•
The option, selectable using the UNIEN signal, of using two unidirectional buses
DD[31:0] and DDIN[31:0], instead of a single bidirectional data bus. This is
described in Unidirectional/bidirectional mode interface on page 3-10.
•
The value returned by the JTAG TAP controller IDCODE instruction is the value
present on the new TAPID[31:0] input bus. This allows the ID code to be easily
changed for each chip design.
This document has been written for experienced hardware and software engineers who
may or may not have experience of ARM products.
Copyright © 1998, 1999 ARM Limited. All rights reserved.
ARM DDI0145B
Advertisement
Table of Contents
