EP9312 datasheet(2/62 Pages) CIRRUS

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DS515PP7

EP9312

Universal Platform SOC Processor

The EP9312 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 EP9312 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

March 2001

Initial Release.

June 2001

Upgrade to revision B silicon.

August 2001

Upgrade to revision C silicon.

May 2003

Upgrade to revision D silicon.

December 2003

Update timing data.

July 2004

Update AC data.

Add ADC data.

Febuary 2005

Update with most-current characterization data.

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