ATJ2075datasheet

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1 Short Descriptions .....................................................................................................................4
2 Features.....................................................................................................................................4
3 Architecture Overview ..............................................................................................................5
4 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 WMA Decoder ......................................................................................................................................... 24
5.7 Microphone Interface................................................................................................................................ 26
5.8 SPDIF Interface ........................................................................................................................................ 26
5.9 Power Management Unit (PMU)............................................................................................................... 27
6 Control Interfaces ....................................................................................................................28
6.1 How System Power Up............................................................................................................................. 28
6.2 Key Matrix Scan....................................................................................................................................... 29
6.3 4*13 LCD Driver...................................................................................................................................... 30
6.4 8080/6800 LCM Interface ......................................................................................................................... 31
7 Pin Configurations..................................................................................................................33
8 Electrical Characteristics .........................................................................................................35
8.1 Absolute Maximum Ratings ...................................................................................................................... 35
8.2 Capacitance (TA = 25 , VCC = 0 V) ...................................................................................................... 35
8.3 DC Characteristics (TA = 25 , VDD = 2.35 V, VCC = 3.15 V)............................................................. 35
8.4 AC Characteristics (TA = 25 , VDD = 2 to 2.7 V, VCC = 2.7 to 3.6 V)................................................ 36
9 Typical Performance Characteristics .......................................................................................42
9.1 A/D Converter Characteristics.................................................................................................................. 42
9.2 D/A Converter .......................................................................................................................................... 42
9.3 Internal Power Amplifier (2 channels) ...................................................................................................... 43
9.4 MCU/DSP Dissipation (Ivdd VS. Frequency)........................................................................................... 44
10 Outline Dimension...................................................................................................................45
1 Short Descriptions
The ATJ2075 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. ATJ2075 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 ATJ2075’s programmable
architecture supports the MP3 and WMA and other digital audio standards. For devices like USB Flash Disk,
the ATJ2075 can act as a USB mass storage slave device to personal computer system. The ATJ2075 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

【文件名】:0774@52RD_datasheet(1).pdf
【格　式】:pdf
【大　小】:525K
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