VLSI: VS1011E-S (SOIC28)

VS1011E-S single-chip MP3 audio decoder from VLSI Solution.

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 interfaces, 4 general purpose I/O pins, as well as a high-quality variable-sample-rate stereo DAC, followed by an earphone amplifier and a ground buffer. VS1011 receives its input bitstream through a serial 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 controlled via a serial control bus. In addition to basic decoding, it is possible to add application specific features, like DSP effects, to the user RAM memory.

• Decodes MPEG 1.0 & 2.0 audio layer III (MP3: CBR, VBR, ABR); layers I & II (MP1, MP2) optional; WAV (PCM + IMA ADPCM)
• 320 kbit/s MP3 with 12.0 MHz external clock
• Streaming support for all audio formats
• Bass and treble controls
• Operates with single 12..13 MHz or 24..26 MHz external clock
• Internal clock doubler
• Low-power operation
• High-quality stereo DAC with no phase error between channels
• Stereo earphone driver capable of driving a 30Ω­ load
• Separate 2.5 .. 3.6 V operating voltages for analog and digital
• Serial control and data interfaces
• Can be used as a slave co-processor
• 5.5 KiB On-chip RAM for user code / data
• SPI flash boot for special applications
• New functions may be added with software and 4 GPIO pins
• RoHS-compliant package SOIC28

• VS1011E-S (SOIC28)