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ATJ2085: DescriptionATJ2085 is a single-chip for flash-based digital music player; File Size603KB，35 Pages; ManufacturerETC

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ATJ2085 is a single-chip for flash-based digital music player

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ATJ2085

DATA SHEET

Actions

ATJ 2085

PRODUCT

DATA

SHEET

(Version 1.5 08/2004)

Actions Semiconductor Co., Ltd

VER 1.5

Page 0

8/18/2004

WWW.MP3JS.COM.C

ATJ2085

DATA SHEET

Actions

Declaration

All contents of this document are protected by copyright law and reproduction in whole or in part is

prohibited without the prior written consent of Actions Semiconductor Co., Ltd. Other product

names used in this publication are for identification purposes only and may be trademarks or

registered trademarks of their respective companies.

The information presented in this document does not form part of any quotation or contract, is

believed to be accurate and reliable. Actions Semiconductor Co., Ltd. reserves the right to make

changes to specifications and product descriptions at any time without notice, and to discontinue

or make changes to its products at any time without notice. Actions Semiconductor Co., Ltd.

specifically disclaims any and all liability for any consequence of the application or use of any

product or circuit. Publication thereof does not convey nor imply any license under patent or other

industrial or intellectual property rights.

Actions Semiconductor Co., Ltd. is one of Licensee of Thomson Licensing S.A. and is approved

to distribute these semiconductor devices using MPEG Layer-3 (“mp3”) coding technology (“mp3

decoder chips”) by Thomson Licensing S.A. Supply of this product does not convey a license nor

imply any right to distribute content created with this product in revenue-generating broadcast

systems (terrestrial, satellite, cable and/or other distribution channels), streaming applications (via

Internet, intranets and/or other networks), other content distribution systems (pay-audio or

audio-on-demand applications and the like) or on physical media (compact discs, digital versatile

discs, semiconductor chips, hard drives, memory cards and the like). An independent license for

such use is required. For details, please visit http://mp3licensing.com.

Actions Semiconductor Co., Ltd. is one of Licensee of Microsoft Licensing, GP. Actions

Semiconductor Co., Ltd. is approved to distribute these semiconductor devices using Windows

Media Audio (“wma”) coding technology (“wma codec chips”) by Microsoft Licensing, GP. This

product includes technology owned by Microsoft Corporation and cannot be used or distributed

without a license from Microsoft Licensing, GP.

ADDITIONAL SUPPORT

Additional product and company information can be obtained by going to the Actions website at:

www.actions.com.cn.

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ATJ2085

DATA SHEET

Actions

CONTENTS

Declaration ................................................................................................................................................1

CONTENTS...............................................................................................................................................2

1. Description ............................................................................................................................................4

2. Features ................................................................................................................................................4

3. Pin Description ......................................................................................................................................6

3.1 Pin Sort by Number .....................................................................................................................6

4. Function Description ...........................................................................................................................10

4.1 Functional Block Diagram..........................................................................................................10

4.2 MCU Core .................................................................................................................................. 11

4.3 DSP Core................................................................................................................................... 11

4.4 DMA Controller .......................................................................................................................... 11

4.5 General Purpose IO Ports ......................................................................................................... 11

4.6 RTC/CTC/Watch Dog Timer......................................................................................................13

4.7 Oscillator/PLL.............................................................................................................................13

4.8 Power Management Unit (PMU)................................................................................................14

4.9 ADC............................................................................................................................................15

4.10 DAC..........................................................................................................................................16

4.11 Headphone Driver ....................................................................................................................17

4.13 External Memory Interface ......................................................................................................17

4.14 I2C Interface ............................................................................................................................18

4.15 USB 2.0(FS) SIE......................................................................................................................19

4.15.1 Hard Core ......................................................................................................................20

4.15.2 Interrupts........................................................................................................................20

4.16 FM Interface.............................................................................................................................20

5. Electrical Characteristics.....................................................................................................................20

5.1 Absolute Maximum Ratings .......................................................................................................20

5.2 Capacitance ...............................................................................................................................21

5.3 DC Characteristics.....................................................................................................................21

5.4 AC Characteristics .....................................................................................................................22

5.4.1 AC test input waveform ...................................................................................................22

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ATJ2085

DATA SHEET

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5.4.2 AC test output measuring points .....................................................................................22

5.4.3 Reset Parameter .............................................................................................................22

5.4.4 Initialization Parameter....................................................................................................22

5.4.5 GPIO Interface Parameter...............................................................................................23

5.4.6 Ordinary ROM Parameter ...............................................................................................23

5.4.7 External System Bus Parameter .....................................................................................24

5.4.8 Bus Operation..................................................................................................................25

5.4.9 A/D Converter Characteristics .........................................................................................27

5.4.10 Headphone Driver Characteristics Table.......................................................................27

5.4.11 LCM Driver Parameter...................................................................................................29

6. MCU/DSP Dissipation (IVDD VS. Frequency)....................................................................................30

6.1 MCU Dissipation ........................................................................................................................30

6.2 DSP Dissipation .........................................................................................................................30

7. Recommended Soldering Conditions .................................................................................................31

7.1 Soldering Conditions..................................................................................................................31

7.2 Precaution against ESD for Semiconductors ............................................................................31

7.3 Handling of Unused Input Pins for CMOS.................................................................................31

7.4 Status before Initialization of MOS Devices ..............................................................................32

8. Package Drawings ..............................................................................................................................33

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ATJ2085

DATA SHEET

Actions

1. Description

ATJ2085 is a single-chip for flash-based digital music player. It includes an audio decoder with a

high performance DSP, ADPCM record capabilities and USB interface for downloading music and

uploading voice recordings. ATJ2085 also provides an interface to flash memory, LED, button and

switch inputs, headphone, and microphone, and FM radio input and control. ATJ2085’s

programmable architecture supports the MP3, WMA and other digital audio standards. For

devices like USB-Disk, ATJ2085 can act as a USB mass storage slave device to personal

computer system. Its low power consumption allows a long battery life, and an efficient flexible

on-chip DC-DC converter allows many different battery configurations, including 1xAA, 1xAAA,

2xAA, 2xAAA and Li-Ion. Built-in Sigma-Delta DAC & a headphone driver to directly drive low

impedance headphones. The ADC includes inputs for both Microphone and Analog Audio in to

support voice recording and FM radio integration features. Thus, the ATJ2085 provides a true

‘ALL-IN-ONE’ solution that is ideally suited for highly optimized digital audio players with mass

storage function.

2. Features

MPEG1/2/2.5 Audio Layer 1, 2, 3 decoder

Support WMA Decoder

Digital Voice Recording with Actions Speech Algorithm

24 bits DSP Core with memory and on-chip Debug Support Unit (DSU)

Integrated 8-bit MCU with DSU

External up to 2(cs) x 64M/128M/256M/512M/1G/2G bytes Nand type Flash accessed by MCU or

DMA

Built-in DMA, CTC (Counter/Timer Controller) and interrupt controller for MCU

Energy saving dynamic power management (PMU)

Support USB 2.0（FS）, Write speed(Max): 955k byte/s; Read speed(Max): 1033k byte/s

Build in Stereo 18-bit Sigma-Delta DAC

Build in Key Scan Circuit (3*3) and GPIO

I²C interface supports Master/Slave mode, with changeable slave address

Support external 8080 Interface LCM driver

Support FM Radio input and 32 levels volume control

Support

Stereo

16-bit

Sigma-Delta

ADC

for

Microphone/FM

Input,

sample

rate

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