EP7309 Data Sheet
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.)
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
®
.
(cont.)
(cont.)
BLOCK DIAGRAM
Digital
Audio
Interface
Power
Management
EPB Bus
Clocks &
Timers
ICE-JTAG
USER INTERFACE
SERIAL PORTS
Serial
Interface
ARM720T
ARM7TDMI CPU Core
Interrupts,
PWM & GPIO
(2) UARTs
w/ IrDA
Internal Data Bus
Boot
ROM
8 KB
Write
Cache
Buffer
MMU
Bus
Bridge
Keypad&
Touch
Screen I/F
MaverickKey
TM
SRAM &
FLASH I/F
On-chip SRAM
48 KB
LCD
Controller
MEMORY AND STORAGE
©
Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
AUG ‘05
DS507F1
CIRRUS [ CIRRUS LOGIC ]
