PDF VS1011 Data sheet ( Hoja de datos )

Número de pieza	VS1011
Descripción	MP3 AUDIO CODEC
Fabricantes	VLSI
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No Preview Available ! VS1011 VS1011 VS1011 - MP3 AUDIO CODEC Features • Decodes MPEG 1 & 2 audio layer 3 (ISO 11172-3), WAV and PCM ﬁles • Supports VBR (variable bitrate) for MP3 • Stream support • Can be used as a slave co-processor • Operates with single clock 12.288..14 MHz or 24.576..28 MHz. • Low-power operation • High-quality stereo DAC with no phase er- ror between channels • Stereo earphone driver capable of driving a 30Ω load • Separate 2.5 .. 3.6V operating voltages for analog and digital • 5.5 KiB On-chip RAM for user code / data • Serial control and data interfaces • New functions may be added with software and 4 GPIO pins Description VS1011 is a single-chip MP3 audio decoder. The chip contains a high-performance, low-power DSP processor core VS DSP4, working memory, 5 KiB instruction RAM and 0.5 KiB data RAM for user applications, serial control and input data inter- faces, 4 general purpose I/O pins, as well as a high-quality variable-sample-rate stereo DAC, fol- lowed by an earphone ampliﬁer and a ground buffer. VS1011 receives its input bitstream through a se- rial input bus, which it listens to as a system slave. The input stream is decoded and passed through a digital volume control to an 18-bit oversampling, multi-bit, sigma-delta DAC. The decoding is con- trolled via a serial control bus. In addition to the basic decoding, it is possible to add application speciﬁc features, like DSP effects, to the user RAM memory. VS1011 GPIO GPIO 4 Stereo DAC DREQ SO SI SCLK XCS XDCS Serial Data/ Control Interface VSDSP4 Instruction RAM Instruction ROM Stereo Ear− phone Driver X ROM audio L R output X RAM Y ROM Y RAM Version 1.00, 2004-10-22 1 1 page VLSI Solution y VS1011 VS1011 CONTENTS 9.6.1 Sine Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 9.6.2 Pin Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 9.6.3 Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 9.6.4 Erk Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 9.6.5 SCI Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 10 VS1011 Registers 35 10.1 Who Needs to Read This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 10.2 The Processor Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 10.3 VS1011 Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 10.4 SCI Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 10.5 Serial Data Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 10.6 DAC Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 10.7 GPIO Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 10.8 Interrupt Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 10.9 System Vector Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 10.9.1 AudioInt, 0x20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 10.9.2 SciInt, 0x21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 10.9.3 DataInt, 0x22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 10.9.4 UserCodec, 0x0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 10.10System Vector Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 10.10.1 WriteIRam(), 0x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 10.10.2 ReadIRam(), 0x4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 10.10.3 DataBytes(), 0x6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 10.10.4 GetDataByte(), 0x8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Version 1.00, 2004-10-22 5 5 Page VLSI Solution y VS1011 VS1011 4. CHARACTERISTICS & SPECIFICATIONS 4.5 Recommended Operating Conditions Parameter Symbol Min Typ Max Unit Analog and Digital Ground AGND DGND 0.0 V Positive Analog AVDD 2.5 2.7 3.6 V Positive Digital Ambient Operating Temperature DVDD 2.3 2.5 3.6 V -30 +85 ◦C The following values are to be used when the clock doubler is active: Parameter Symbol Min Typ Max Unit Input Clock Frequency XTALI Internal Clock Frequency1 CLKI 12.288 15 MHz 24.576 30 MHz 1 The maximum sample rate that may be played with correct speed is CLKI/512. The following values are to be used when the clock doubler is not active: Parameter Symbol Min Typ Max Unit Input Clock Frequency XTALI Internal Clock Frequency1 CLKI 24.576 30 MHz 24.576 30 MHz 1 The maximum sample rate that may be decoded with correct speed is CLKI/512. Note: See Application notes for what clock speeds are required to play speciﬁc bit rates and sample rates. 4.6 Digital Characteristics Parameter Symbol Min Typ Max Unit High-Level Input Voltage 0.7DVDD V Low-Level Input Voltage 0.3DVDD V High-Level Output Voltage at IO = -1.0 mA Low-Level Output Voltage at IO = 1.0 mA Input Leakage Current 0.7DVDD -1.0 V 0.3DVDD V 1.0 µA Version 1.00, 2004-10-22 11 11 Page

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