Chapter 3: Details Of Hardware Design; Introduction; Cs89712 Processor - Cirrus Logic ARM CDB89712 User Manual

Chapter 3: Details of Hardware Design

3.1 INTRODUCTION

This chapter describes the major components on the CS89712 Development Board. A complete
CS89712 data sheet can be downloaded from the Cirrus Logic website at
http://www.cirrus.com.

3.2 CS89712 PROCESSOR

The CS89712 is an ARM 32-bit RISC microcontroller incorporating a wide range of on-chip
peripherals, including an on-chip Ethernet controller. The core of the CS89712 is designed with an
ARM720T processing unit comprising an ARM7 microprocessor, enhanced MMU and 8 Kbytes of
4-way set-associative cache. The CS89712 is a 3.3V (core processor voltage is 2.5V) device with a
maximum input clock of 73.728Mhz, achieving a performance level equivalent to 65 MIPS with a
maximum power consumption of 170mW. An internal functional block diagram is shown in
Figure 3-1.
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CDB89712
JUL '01
DS502UM2