參數(shù)資料
型號(hào)： EP7212-CV-A
廠商： CIRRUS LOGIC INC
元件分類(lèi)： 微控制器/微處理器
英文描述： HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
中文描述： 32-BIT, MROM, 74 MHz, RISC MICROCONTROLLER, PQFP208
封裝： LQFP-208
文件頁(yè)數(shù)： 1/136頁(yè)
文件大?。?/td> 2289K
代理商： EP7212-CV-A
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High-Performance, Low-Power
System-on-Chip with LCD
Controller and Digital Audio
Interface (DAI)
1
Cirrus Logic, Inc.
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7851
http://www.cirrus.com
Copyright Cirrus Logic, Inc. 2000
(All Rights Reserved)
EP7212
EP7212
OVERVIEW
FEATURES
ARM720T processor
— ARM7TDMI CPU
— 8 K-bytes of four-way set-associative cache
— MMU with 64-entry TLB (transition look-aside buffer)
— Write Buffer
— Windows
CE enabled
— Thumb code support enabled
Dynamically programmable clock speeds of
18, 36, 49, and 74 MHz at 2.5 V
Performance matching 100-MHz Intel
Pentium-based PC
Ultra low power
— Designed for applications that require long battery life
while using standard AA/AAA batteries or rechargeable
cells
— Typical Power Numbers
G
90 mW at 74 MHz in the Operating State
G
30 mW at 18 MHz in the Operating State
G
10 mW in the Idle State (clock to the CPU stopped,
everything else running)
G
<1 mW in the Standby State (realtime clock ‘on’,
everything else stopped)
The EP7212 is designed for ultra-low-power applica-
tions such as organizers / PDAs, two-way pagers,
smart cellular phones or any vertical PDA device that
features the added capability of digital audio decom-
pression. The core-logic functionality of the device is
built around an ARM720T processor with 8 K-bytes 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.
Functional Block Diagram
13-MHZ INPUT
32.768-KHZ
OSCILLATOR
PLL
INTERRUPT
CONTROLLER
POWER
MANAGEMENT
DRAM CNTRL
LCD
CONTROLLER
ARM7TDMI
CPU
CORE
8-KBYTE
CACHE
MMU
TIMER
COUNTERS(2)
ARM720T
INTERNAL DATA BUS
3.6864 MHZ
32.768 KHZ
EINT[1-3], FIQ,
MEDCHG
BATOK, EXTPWR
PWRFL, BATCHG
UART2
IrDA
D[0-31]
NPOR, RUN,
RESET, WAKEUP
EXPCLK, WORD, NCS[0-3],
EXPRDY, WRITE
MOE, MWE,
RAS[0-1], CAS[0-3]
A[0-27],
DRA[0-12]
LCD DRIVE
LED AND
PHOTODIODE
ASYNC
INTERFACE 2
INTERNAL ADDRESS BUS
ON-CHIP
BOOT ROM
ASYNC
INTERFACE 1
ON-CHIP SRAM
38,400 BYTES
CL-PS6700 INTF
PB[0-1], NCS[4-5]
EXPANSION CNTRL
UART1
EPB BRIDGE
EPB BUS
ICE-JTAG
TEST AND
DEVELOPMENT
WRITE
BUFFER
STATE CONTROL
MEMORY CONTROLLER
LCD DMA
SSI1 (ADC)
PWM
ADCCLK, ADCIN,
ADCOUT, SMPCLK,
ADCCS
SSICLK, SSITXFR,
SSITXDA, SSIRXDA,
SSIRSFR
DC TO DC
PORTS A, B, D (8-BIT)
PORT E (3-BIT)
KEYBD DRIVERS (0-7)
BUZZER DRIVE
GPIO
RTC
FLASHING LED DRIVE
CODEC
SSI2
DAI
(cont.)
(cont.)
DS474PP1
FEB 00
相關(guān)PDF資料
PDF描述
EP7309 HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE
EP7309-CB-C CONN MODULAR JACK 8-8 R/A UNSHLD
EP7309-CR-C HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE
EP7309-CV-C HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE
EP7309-ER-C HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EP7212-CV-D 制造商:Rochester Electronics LLC 功能描述:- Bulk
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EP7309 制造商:CIRRUS 制造商全稱(chēng):Cirrus Logic 功能描述:HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE
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