EP7209-BC [CIRRUS]
Consumer Circuit, PBGA256, PLASTIC, BGA-256;
| 型号： | EP7209-BC |
| 厂家： | 
CIRRUS LOGIC |
| 描述： | Consumer Circuit, PBGA256, PLASTIC, BGA-256 商用集成电路 |
| 文件： | 总4页 (文件大小：74K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EP7209
Preliminary Product Bulletin
FEATURES
n Audio decoder system on a chip
Ultra-Low-Power
Audio Decoder
System-on-Chip
— Programmable architecture enables 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
OVERVIEW
n Ultra low power
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.
— Designed for applications that require long battery life
while using a single standard AA/AAA battery
— Less than 110 mW for fs > 24 kHz
— Average 80 mW for fs < 24 kHz
— Average 60 mW for fs < 12 kHz
— 10 µW in the Standby State
n OEM Customization
— Integrated ARM720T RISC processor
— Up to 25 MHz of CPU processing power available for
custom features such as software EQ or tone control,
volume control, spectrum analyzer, random play order,
etc.
— Allows for control of digital voice recorder function
(cont.)
The EP7209 also includes a 32-bit Y2K-compliant
Real-Time Clock (RTC) and comparator.
The EP7209 also includes a comprehensive set of
integrated peripherals such as an LCD display con-
(cont.)
Functional Block Diagram
13-MHZ INPUT
PLL
3.6864 MHZ
INTERNAL DATA BUS
D0–D31
ARM720T
32.768-KHZ
OSCILLATOR
32.768 KHZ
ARM7TDMI
CPU CORE
FLASH CARD,
FLASH MEM
FLASH
INTERFACE
POR, RUN,
RESET, WAKEUP
STATE CONTROL
EXPCLK, WORD,
CS[0–3], EXPRDY,
EXPANSION
CONTROL
8-KBYTE
CACHE
POWER
MANAGEMENT
BATOK, EXTPWR
PWRFL, BATCHG
PARALLEL
INTERFACE
PARALLEL PORT, EPP
MMU
EINT[1–3], FIQ,
MEDCHG
INTERRUPT
CONTROLLER
WRITE
BUFFER
INTERNAL ADDRESS BUS
A[0–27]
FLASHING LED DRIVE
RTC
LCD DMA
TEST AND
DEVELOPMENT
ICE-JTAG
TIMER
COUNTERS(2)
PORTS A, B, D (8-BIT)
PORT E (3-BIT)
GPIO
LCD
LCD DRIVE
CONTROLLER
ON-CHIP
BOOT ROM
DC TO DC
PWM
ON-CHIP SRAM
37.5 K-BYTES
LED AND
PHOTODIODE
ADCCLK, ADCIN,
ADCOUT, SMPCLK,
ADCCS
IrDA
SSI (ADC)
ASYNC
INTERFACE
UART1
UART2
APB BRIDGE
SSICLK, SSITXFR,
SSITXDA, SSIRXDA,
SSIRSFR
2
I S
APB BUS
ASYNC
INTERFACE
Cirrus Logic, Inc.
Copyright © Cirrus Logic, Inc. 1999
(All Rights Reserved)
PB453PP01 (ver.01)
MAY 1999
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7851
http://www.cirrus.com
1
EP7209
Ultra-Low-Power Audio Decoder System-on-Chip
FEATURES (cont.)
n LCD controller
n On-chip Boot ROM for manufacturing support
— Interfaces directly to a single-scan panel monochrome
LCD
— Panel width is programmable from 32 to 128 pixels
— Panel length up to 64 pixels
— Bits per pixel of 1, 2, or 4 bits
n Integrated I2S interface
— Connects directly to a Crystal® audio DAC
n 27-bits of general-purpose I/O
— Three 8-bit and one 3-bit GPIO port
— Supports scanning keyboard matrix
n ROM/SRAM/FLASH memory control
n SIR (up to 115.2 kbps) infrared encoder/decoder
— Decodes up to 6 separate memory segments of up to
256 Mbytes each
— IrDA (Infrared Data Association) SIR protocol encoder
— Each segment can be configured as 8, 16, or 32 bits
wide and supports page-mode access
— Programmable access time for conventional
ROM/SRAM/FLASH memory
n DC-to-DC converter interface (PWM)
— Provides two 96-kHz clock outputs with programmable
duty ratio (from 1-in-16 to 15-in-16) that can be used to
drive a DC to DC converter
n Supports Removable FLASH card interface
— Enables connection to removable FLASH card for addi-
tion of expansion FLASH memory modules
n 208-pin LQFP or 256-ball PBGA packages
n Full JTAG boundary scan and Embedded ICE
support
n Parallel Interface
— Allows for bi-directional connection to PC parallel port
using an enhanced parallel port (EPP) interface.
n 37.5 k-bytes of on-chip SRAM for fast program
execution and/or as a frame buffer
OVERVIEW (cont.)
troller, an audio DAC interface, and a FLASH mem-
ory interface. Using the EP7209, a portable audio
decoder solution can be built with the addition of an
LCD display, an audio DAC, a FLASH memory sub-
system, and a small number of additional low cost
components.
ble wait state generator ensure that a wide range of
memory options can be utilized.
The EP7209 implements a full ISO compliant MPEG
1, 2, & 2.5 layer 3 audio decompression engine in
less than 50% of its available processing capability.
This leaves significant processing power available for
product differentiation.
The EP7209 uses its powerful 32-bit RISC process-
ing engine to implement audio decompression algo-
rithms in software. The nature of the on-board RISC
processor and the availability of efficient C-compilers
and other software development tools ensures that a
wide range of audio decompression algorithms can
easily be ported to and run on the EP7209.
MPEG 1, 2, & 2.5 Layer 3 Object Code Library
Cirrus Logic provides an object code library for
enabling MPEG 1, 2, & 2.5 layer 3 audio decompres-
sion. This library supports the MPEG 1 sample rates
of 48 k, 44.1 k and 32 k bits per second; the MPEG 2
sample rates of 24 k, 22.05 k and 16 k bits per sec-
ond; and the MPEG 2.5 sample rates of 12 k,
11.025 k and 8 k bits per second. In addition to all
standard fixed compressed data rates, the MPEG
layer 3 object code library also supports decompres-
sion of variable bit-rate data streams.
The EP7209 uses external memory for storing appli-
cation code. The use of external memory to support
software audio decompression algorithms ensures
that the audio decompression system solution can be
tailored to the requirements of the application. Soft-
ware can be placed in a low cost mask ROM for price
sensitive applications, or can be placed in external
FLASH memory to enable upgradeable systems. The
EP7209’s 8 kbyte on-board cache and programma-
Power Management
Through careful design, Cirrus Logic has achieved
extremely low power consumption with the EP7209.
EP7209
Ultra-Low-Power Audio Decoder System-on-Chip
OVERVIEW (cont.)
This is achieved by using a combination of dynami-
cally adjustable core clock frequencies, low power
states utilized during periods of inactivity, and fully
static design principles. For example, when decom-
pressing MPEG 1 layer 3 music data with sample
rates above 24 kHz, the EP7209 consumes less than
110 mW. At sampling frequencies below 24 kHz,
power consumption falls to 80mW, and for sample
rates below 12 kHz, power consumption is a meager
60 mW.
Audio Data Memory Interfaces
The EP7209 connects directly to both on-system
FLASH memory and to removable FLASH memory-
cards. The generality of the external interface on the
EP7209 allows for the use of a wide variety of addi-
tional memory types for compressed audio data stor-
age.
DD[3:0]
CL1
CL2
LCD MODULE
CRYSTAL
MOSCIN
FM
M
COL[7:0]
KEYBOARD
PA[7:0]
D[31:0]
A[27:0]
PB[7:0]
MOE
WRITE
GPIO
PD[7:0]
PE[2:0]
FLASH CARD/
DC
INPUT
FLASH MEMORY
POR
PWRFL
BATOK
EXTPWR
BATCHG
RUN
POWER
SUPPLY UNIT
AND
PC PARALLEL PORT
BATTERY
COMPARATORS
CS[0]
CS[1]
WAKEUP
DRIVE[1:0]
FB[1:0]
DC-TO-DC
CONVERTERS
× 16
FLASH
× 16
ROM
SSICLK
SSITXFR
SSITXDA
SSIRXDA
× 16
FLASH
× 16
ROM
2
I S CODEC
IR LED AND
PHOTODIODE
LEDDRV
PHDIN
CS[n]
WORD
EXTERNAL MEMORY-
MAPPED EXPANSION
BUFFERS
RxD1/2
TxD1/2
DSR
2× RS-232
TRANSCEIVERS
CTS
DCD
ADCCLK
ADCCS
ADCOUT
ADCIN
CS[2]
CS[3]
ADC
DIGITIZER
BUFFERS
AND
ADDITIONAL I/O
SMPCLK
LATCHES
A EP7209–Based System
EP7209
Ultra-Low-Power Audio Decoder System-on-Chip
LCD Display interface
Direct Sales Offices
Domestic
International
The EP7209 interfaces directly to a single-scan panel
monochrome LCD display. For portable digital audio
player applications that require low-cost LCD dis-
plays, a 4 kbyte display buffer will enable display
sizes of up to 128 pixels wide by 64 pixels high by 4
bits deep.
NORTHERN CA
Fremont
TEL: 510/623-8300
FAX: 510/252-6020
FRANCE
Paris
TEL: 33/1-48-12-2812
FAX: 33/1-48-12-2810
SOUTHERN CA
Los Angeles
TEL: 310/826-9382
310/826-1602
FAX: 310/826-9532
GERMANY
Herrsching
TEL: 49/81-52-92460
FAX: 49/81-52-924699
HONG KONG
Kowloon
TEL: 852-2376-0801
FAX: 852-2375-1202
Data Download
NORTHWESTERN AREA
Portland, OR
TEL: 503/620-5547
FAX: 503/620-5665
The EP7209 includes support for bi-directional con-
nection to a PC through an enhanced parallel port
(EPP) interface. This interface enables downloading
of compressed music data from a PC to an EP7209-
-based portable digital audio player.
JAPAN
Tokyo
TEL: 81/3-3340-9111
FAX: 81/3-3340-9120
SOUTH CENTRAL AREA
Austin, TX
TEL: 512/338-1831
FAX: 512/339-0196
KOREA
Seoul
TEL: 82/2-565-8561
FAX: 82/2-565-8565
CENTRAL AREA
Chicago, IL
TEL: 847/884-6750
FAX: 847/884-6795
The EP7209 can also be connected to industry stan-
dard USB slave devices through an external inter-
face. The power of the EP7209 coupled with the
36 MHz external data bus ensures that the EP7209
can support rapid transfer of compressed audio data
over a USB interface.
SINGAPORE
TEL: 65/743-4111
FAX: 65/742-4111
MID-ATLANTIC AREA
Columbia, MD
TEL: 410/740-5654
FAX: 410/740-6961
TAIWAN
Taipei
TEL: 886/2-2718-4533
FAX: 886/2-2718-4526
SOUTHEASTERN AREA
Raleigh, NC
TEL: 919/859-5210
FAX: 919/859-5334
Boca Raton, FL
TEL: 561/395-1613
FAX: 561/395-1373
UNITED KINGDOM
Bucks, England
TEL: 44/01628-472211
FAX: 44/01628-486114
The EP7209 also includes a built-in 115.2 kbps IrDA
SIR protocol encoder/decoder that can be used to
drive an infrared communication interface to down-
load the data.
Cirrus Logic...where Analog meets Digital
Cirrus Logic is a premier supplier of precision linear circuits and
mixed-signal system-level chip solutions, the latter of which demand
high-performance mixed-signal processing, embedded DSP,
algorithms and firmware. The company’s products, sold under its own
Audio Interface
2
The EP7209 integrates an I S interface to enable a
direct connection to many low cost, low power, high
quality audio DACs. In particular, the I S interface
can be used to drive the Crystal CS4343 low power
audio DAC or the Crystal CS4250 low power audio
codec. Both the CS4343 and the CS4250 provide
digital bass and treble boost, digital volume control
and compressor-limiter functions.
name and the Crystal
product brand, enable high-volume
applications in mass storage, communications, consumer electronics
and industrial markets.
2
With more than 800 patents (issued and pending), Cirrus Logic
continues to expand its intellectual property portfolio through R&D
investments. Approximately 40 percent of the company’s patents
involve mixed-signal technology, a key to innovating system-on-chip
solutions. Over the past decade, Cirrus Logic has achieved more than
50 industry firsts, many of which have set new standards within their
respective markets.
To learn how your Cirrus Logic can add high value and
differentiation to your products, contact one of our system and
applications specialists today.
Packaging
Copyright 1999 Cirrus Logic, Inc. All rights reserved. Printed in USA.
The EP7209 is available in a 208-pin LQFP package
and a 256-ball PBGA package.
Advance product information describes products that are in development
and subject to development changes. Cirrus Logic, Inc. has made best efforts to
ensure that the information contained in this document is accurate and reliable. How-
ever, the information is subject to change without notice and is provided “AS IS” with-
out warranty of any kind (express or implied). No responsibility is assumed by Cirrus
Logic, Inc. for the use of this information, nor for infringements of patents or other
rights of third parties. This document is the property of Cirrus Logic, Inc. and implies
no license under patents, copyrights, trademarks, or trade secrets. Furthermore, no part
of this publication may be used as a basis for manufacture or sale of any items without
the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic,
Inc. or other vendors and suppliers appearing in this document may be trademarks or
service marks of their respective owners, which may be registered in some jurisdic-
tions. A list of Cirrus Logic, Inc. trademarks and service marks can be found at
http://www.cirrus.com.
System Design
As shown in the system block diagram, simply adding
FLASH memory, an LCD display, an audio DAC, a
code ROM, and some discrete components com-
pletes a low power digital audio player system.
Cirrus Logic, Inc.
3100 West Warren Ave., Fremont, CA 94538
TEL: 510/623-8300 FAX: 510/252-6020
Publications Ordering: 800/359-6414 (USA) or 510/249-4200
Worldwide Web:
http://www.cirrus.com
PB453PP01 (ver.01)
相关型号：
EP7212
HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
CIRRUS
EP7212-CB-A
HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
CIRRUS
EP7212-CV-A
HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
CIRRUS
©2020 ICPDF网 联系我们和版权申明