EP7311 datasheet(1/58 Pages) CIRRUS

Part #	EP7311

Description	High-performance, Low-power, System-on-chip with SDRAM & Enhanced Digital Audio Interface

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Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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©Copyright Cirrus Logic, Inc. 2005

AUG ‘05

DS506F1

http://www.cirrus.com

High-performance,

Low-power, System-on-chip

with SDRAM & Enhanced

Digital Audio Interface

EP7311 Data Sheet

OVERVIEW

BLOCK DIAGRAM

FEATURES

(cont.)

■ ARM720T Processor

— ARM7TDMI CPU

— 8 KB of four-way set-associative cache

— MMU with 64-entry TLB

— Thumb code support enabled

■ Ultra low power

— 90 mW at 74 MHz typical

— 30 mW at 18 MHz typical

— 10 mW in the Idle State

— <1 mW in the Standby State

■ 48 KB of on-chip SRAM

■ MaverickKey™ IDs

— 32-bit unique ID can be used for SDMI compliance

— 128-bit random ID

■ Dynamically programmable clock speeds of

18, 36, 49, and 74 MHz

LCD

Controller

Boot

ROM

MaverickKeyTM

ARM7TDMI CPU Core

MMU

8 KB

Cache

Write

Buffer

Internal Data Bus

EPB Bus

Memory Controller

SDRAM I/F

SRAM I/F

On-chip SRAM

48 KB

ICE-JTAG

Clocks &

Timers

Keypad&

Touch

Screen I/F

Interrupts,

PWM & GPIO

Bus

Bridge

(2) UARTs

w/ IrDA

Power

Management

Serial

Interface

Multimedia

Codec Port

ARM720T

MEMORY AND STORAGE

The Maverick™ EP7311 is designed for ultra-low-power

applications such as PDAs, smart cellular phones, and

industrial hand held information appliances. The core-logic

functionality of the device is built around an ARM720T

processor with 8 KB of four-way set-associative unified cache

and a write buffer. Incorporated into the ARM720T is an

enhanced memory management unit (MMU) which allows for

support of sophisticated operating systems like Linux®.

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