EP9315 datasheet(2/64 Pages) CIRRUS

2 / 64 page

DS638PP4

EP9315

Enhanced Universal Platform SOC Processor

The EP9315 is an ARM920T-based system-on-a-chip

design with a large peripheral set targeted to a variety of

applications:

•

Thin Client Computers for Business and Home

•

Internet Radio

•

Internet Access Devices

•

Industrial Computers

•

Specialized Terminals

•

Point-of-sale Terminals

•

Test and Measurement Equipment

The ARM920T microprocessor core with separate

16-kbyte, 64-way set-associative instruction and data

caches is augmented by the MaverickCrunch™ co-

processor,

enabling

high-speed

floating

point

calculations.

MaverickKey™ unique hardware programmed IDs are a

solution to the growing concern over secure web content

and commerce. With Internet security playing an

important role in the delivery of digital media such as

books or music, traditional software methods are quickly

becoming unreliable. The MaverickKey unique IDs

provide OEMs with a method of utilizing specific

hardware IDs such as those assigned for SDMI (Secure

Digital Music Initiative) or any other authentication

mechanism.

A high-performance 1/10/100-Mbps Ethernet media

access controller (EMAC) is included along with external

interfaces to SPI, I2S audio, Raster/LCD, IDE storage

peripherals, keypad, and touchscreen. A three-port USB

2.0 Full Speed Host (OHCI) (12 Mbits per second) and

three UARTs are included as well.

The EP9315 is a high-performance, low-power, RISC-

based, single-chip computer built around an ARM920T

microprocessor core with a maximum operating clock

rate of 200 MHz (184 MHz for industrial conditions). The

ARM core operates from a 1.8 V supply, while the I/O

operates at 3.3 V with power usage between 100 mW

and 750 mW (dependent on speed).

OVERVIEW

Table A. Change History

Revision

Date

Changes

PP1

January 2004

Initial Release.

PP2

July 2004

Update AC data.

Add ADC data.

PP3

Febuary 2005

Update electrical characteristics based upon more complete characterization data.

PP4

March 2005

Minor correction to block diagram on page 1. DD7 changed to pull down.

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