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EP7209 Datasheet(PDF) 1 Page - Cirrus Logic

Part # EP7209
Description  Ultra-Low-Power Audio Decoder System-on-Chip
Download  128 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

EP7209 Datasheet(HTML) 1 Page - Cirrus Logic

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OVERVIEW
FEATURES
(cont.)
(cont.)
Functional Block Diagram
1
Copyright
© Cirrus Logic, Inc. 1999
(All Rights Reserved)
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
EP7209
s Audio decoder system-on-chip
— Allows for support of multiple audio decompression
algorithms
— Supports MPEG 1, 2, & 2.5 layer 3 audio decoding,
including ISO compliant MPEG 1 & 2 layer 3 support for
all standard sample rates and bit rates
— Supports bit streams with adaptive bit rates
— DAI (Digital Audio Interface) providing glueless interface
to low power DACs, ADCs, and Codecs
s Ultra low power consumption for MP3 playback
— 87 mW (typical) for 44.1 kHz samples/sec,
128 kbits/second
— 50 mW for 22.05 kHz samples/sec, 64 kbits/second
— <1 mW in Standby State
s ARM720T processor
— ARM7TDMI CPU
— 8 kbytes of four-way set-associative cache
— MMU with 64-entry TLB (transition look-aside buffer)
— Write Buffer
— Windows® CE enabled
— Thumb code support enabled
The EP7209 is a complete integrated system on a
chip for enabling personal digital audio solutions. It
is designed specifically for implementing audio
processing algorithms in power sensitive applica-
tions. The core-logic functionality of the device is
built around an ARM720T embedded processor.
The EP7209 also includes a 32-bit Y2K-compliant
Real-Time Clock (RTC) and comparator.
32.768-KHZ
OSCILLATOR
PLL
INTERRUPT
CONTROLLER
POWER
MANAGEMENT
SSI1 (ADC)
LCD
CONTROLLER
ARM7TDMI
CPU CORE
8-KBYTE
CACHE
MMU
TIMER
COUNTERS (2)
CODEC
ARM720T
INTERNAL DATA BUS
PWM
3.6864 MHZ
32.768 KHZ
EINT[1:3], FIQ,
MEDCHG
BATOK, NEXTPWR
PWRFL, BATCHG
PORTS A, B, D (8-BIT)
PORT E (3-BIT)
KEYBD DRIVERS (0:7)
BUZZER DRIVE
ADCCLK, ADCIN,
ADCOUT, SMPCLK,
ADCCS
SSICLK, SSITXFR,
SSITXDA, SSIRXDA,
SSIRSFR
UART2
IrDA
D[0:31]
NPOR, RUN,
RESET, WAKEUP
EXPCLK, WORD, NCS[0:3],
EXPRDY, WRITE
A[0:27],
DRA[0:12]
LCD DRIVE
LED AND
PHOTODIODE
ASYNC
INTERFACE 2
GPIO
INTERNAL ADDRESS BUS
13-MHZ INPUT
ON-CHIP
BOOT ROM
ASYNC
INTERFACE 1
ON-CHIP SRAM
38,400 BYTES
CL-PS6700
INTFC.
PB[0:1], NCS[4:5]
EXPANSION
CONTROL
UART1
SSI2
EPB BRIDGE
EPB BUS
RTC
FLASHING LED DRIVE
ICE-JTAG
TEST AND
DEVELOPMENT
WRITE
BUFFER
DAI
STATE CONTROL
MEMORY CONTROLLER
LCD
DMA
DC-TO-DC
DEC ‘99
DS453PP2
Ultra-Low-Power Audio Decoder
System-on-Chip
EP7209


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