EP7309_05 Datasheet, PDF (1/51 Pages) Cirrus Logic – High-performance, Low-power, System-on-chip with Enhanced Digital Audio Interface

FEATURES
■ 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
■ 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.)
EP7309 Data Sheet
High-performance,
Low-power, System-on-chip
with 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
http://www.cirrus.com
MEMORY AND STORAGE
©Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
AUG ‘05
DS507F1