EP7309屬于集成電路（IC）的微處理器。由凌云邏輯制造生產(chǎn)的EP7309微處理器微處理器產(chǎn)品是用于信息和數(shù)據(jù)處理的集成電路。與主要按照制造商所選術(shù)語(yǔ)而視為微控制器的類似產(chǎn)品相比，這些器件有所不同。但是按照傳統(tǒng)，微處理器不會(huì)在設(shè)備內(nèi)集成工作存儲(chǔ)器，不太可能集成混合信號(hào)外設(shè)，并且可能在更為復(fù)雜的軟件范式下使用，這些范式涉及使用操作系統(tǒng)來(lái)管理多任務(wù)同時(shí)執(zhí)行。

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 fourway 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?.

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.)

■ Dynamically programmable clock speeds of 18, 36, 49, and 74 MHz

■ 48 KB of on-chip SRAM

■ MaverickKey? IDs

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

— 128-bit random ID

■ LCD controller

— Interfaces directly to a single-scan panel monochrome STN LCD

— Interfaces to a single-scan panel color STN LCD with minimal external glue logic

■ Full JTAG boundary scan and Embedded ICE? support

■ Integrated Peripheral Interfaces

— 8/32/16-bit SRAM/FLASH/ROM Interface

— Digital Audio Interface providing glueless interface to low-power DACs, ADCs and CODECs

— Two Synchronous Serial Interfaces (SSI1, SSI2)

— CODEC Sound Interface

— 8×8 Keypad Scanner

— 27 General Purpose Input/Output pins

— Dedicated LED flasher pin from the RTC

■ Internal Peripherals

— Two 16550 compatible UARTs

— IrDA Interface

— Two PWM Interfaces

— Real-time Clock

— Two general purpose 16-bit timers

— Interrupt Controller

— Boot ROM

■ Package

— 208-Pin LQFP

— 256-Ball PBGA

— 204-Ball TFBGA

■ The fully static EP7309 is optimized for low power dissipation and is fabricated on a 0.25 micron CMOS process