ATJ2073
Data Sheet
Contents
1
2
3
4
Short Descriptions .....................................................................................................................4
Features......................................................................................................................................4
Architecture Overview ..............................................................................................................5
Pin Descriptions.........................................................................................................................6
4.1 Pinout........................................................................................................................................................... 6
4.2 Pin sort by number....................................................................................................................................... 7
4.3 Pin sort by Function................................................................................................................................... 13
5
Functional Description ............................................................................................................22
5.1 DSP Core ................................................................................................................................................... 22
5.2 MCU Core ................................................................................................................................................. 22
5.3 System Memory Mapping ......................................................................................................................... 22
5.4 USB1.1 Interface ....................................................................................................................................... 23
5.5 MPEG Decoder.......................................................................................................................................... 23
5.6 Microphone Interface................................................................................................................................. 24
5.7 SPDIF Interface ......................................................................................................................................... 25
5.8 Power Management Unit (PMU)............................................................................................................... 26
6
Control Interfaces ....................................................................................................................27
6.1 How System Power Up.............................................................................................................................. 27
6.2 Key Matrix Scan ........................................................................................................................................ 28
6.3 4*13 LCD Driver....................................................................................................................................... 29
6.4 8080/6800 LCM Interface ......................................................................................................................... 30
7
8
Pin Configurations...................................................................................................................32
Electrical Characteristics .........................................................................................................34
8.1 Absolute Maximum Ratings ...................................................................................................................... 34
8.2 Capacitance (TA = 25 , VCC = 0 V) ...................................................................................................... 34
8.3 DC Characteristics (TA = 25 , VDD = 2.35 V, VCC = 3.15 V) ............................................................. 34
8.4 AC Characteristics (TA = 25 , VDD = 2 to 2.7 V, VCC = 2.7 to 3.6 V)................................................ 35
9
Typical Performance Characteristics .......................................................................................41
9.1 A/D Converter Characteristics................................................................................................................... 41
9.2 D/A Converter ........................................................................................................................................... 41
9.3 Internal Power Amplifier (2 channels) ...................................................................................................... 42
9.4 MCU/DSP Dissipation (Ivdd VS. Frequency)........................................................................................... 43
10
Outline Dimension...................................................................................................................44
Page 3 of 45
Actions Semiconductor Co.,LTD
ATJ2073
Data Sheet
1
Short Descriptions
The ATJ2073 is a single-chip highly-integrated digital music system solution for devices such as dedicated
audio players, PDAs, and cell phones. It includes an audio decoder with a high performance DSP with
embedded RAM, ADPCM/AG record capabilities and USB interface for downloading music and uploading
voice recordings. ATJ2073 also provides an interface to S/PDIF audio data input, flash memory, LED/LCD,
button and switch inputs, headphone, and microphone, and FM radio control. The ATJ2073’s programmable
architecture supports the MP3 and other digital audio standards. For devices like USB Flash Disk, the ATJ2073
can act as a USB mass storage slave device to personal computer system. The ATJ2073 has low power
consumption to allow long battery life and an efficient flexible on-chip DC-DC converter that allows many
different battery configurations, including 1xAA, 1xAAA, 2xAA,2xAAA.
2
Features
24-bit DSP Core with on-chip ICE support
On-chip DSP 16Kx24 PM and (16K-256)x24 DM, can be switched to be MCU memory space
Integrated 8bit MCU with on-chip ICE support which the instructions are compatible with the Z80 CPU
Internal 16k bytes SRAM accessed by MCU
External up to 25-bit code address space with 7 chips select
Support 14.318MHz/16.368MHz/17.734475MHz/24.576MHz OSC with on-chip PLL for DSP
Supported up to 3*4Gbyte Nand type Flash
2-channel DMA for MCU
1-channel CTC(Counter/Timer Controller) for MCU
On-chip interrupt controller for MCU
Built-in power management unit(PMU), supporting 1 or 2 batteries operation
Support RTC with 32.768kHz or 76.8kHz OSC
Built-in USB1.1 interface
Support SPDIF IN/UART/IR interface
Support on-chip Stereo 18 bit Sigma-Delta DAC
Support external 6800 or 8086 series interface LCM
Support 4x13 matrix Keyboard Circuit Auto Scan
Support 20 General Purpose Input/Output
Support external Epson Series LCM Frame Buffer up to 320x240 dots
Support on-chip 1/3 biased 1/4 duty LCD driver(4x13dots, multiplexed )
Support external CMOS image sensor interface
On-chip 16-bit ADC for Microphone input support , sample rate at 8K/11K/12K/16K/22K/24KHz
On-chip 2 channel headphone power amplifiers
128-pin 14x14x1.4mm LQFP package
Page 4 of 45
Actions Semiconductor Co.,LTD
PCB Design
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