EP7309 Datasheet, PDF (1/46 Pages) Cirrus Logic – HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE

EP7309 Data Sheet
FEATURES
I ARM720T Processor
— ARM7TDMI CPU
— 8 KB of four-way set-associative cache
— MMU with 64-entry TLB
— Thumb code support enabled
I 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
I Advanced audio decoder/decompression capability
— Supports bit streams with adaptive bit rates
— Allows for support of multiple audio
decompression algorithms (MP3, WMA, AAC,
ADPCM, Audible, etc.)
High-Performance,
Low-Power System on Chip
Enhanced
Digital Audio Interface
OVERVIEW
The Maverick™ EP7309 is designed for ultra-low-power
applications such as digital music players, internet
appliances, smart cellular phones or any hand-held
device that features the added capability of digital audio
decompression. 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 Microsoft^®
Windows^® CE and Linux^®.
BLOCK DIAGRAM
(cont.)
(cont.)
Digital
Audio
Interface
Serial
Interface
Power
Management
(2) UARTs
w/ IrDA
Boot
ROM
Internal Data Bus
EPB Bus
ICE-JTAG
ARM720T
ARM7TDMI CPU Core
8 KB
Cache
Write
Buffer
MMU
Bus
Bridge
MaverickKey^TM
SRAM &
FLASH I/F
On-chip SRAM
48 KB
Clocks &
Timers
Interrupts,
PWM & GPIO
Keypad&
Touch
Screen I/F
LCD
Controller
MEMORY AND STORAGE
P.O. Box 17847, Austin, Texas 78760
[phone] FAX: [phone]
http://www.cirrus.com
Copyright 2001 Cirrus Logic (All Rights Reserved)
June ’01
DS507PP1
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