Analog Hardware Features
• Stereo 16-bit Mems Mic audio interface
• Two 24-bit audio DACs
• Stereo earphone driver for 30
load
• 12-bit ADC, 3-7 external inputs
• Operation from single power supply,
three programmable internal regulators

Digital Hardware Features
• 75 MIPS VS_DSP4 processor core
• 16 KiB instruction RAM (4 KiWord)
• Up to 64 KiB virtual instruction RAM
using built-in translation lookaside buffer
• 64 KiB data RAM (216 KiWord)
• USB 2.0 Hi-Speed (480 Mbit/s)
Device / Host
• I2S and SPDIF digital audio interfaces
• SD Card interface
• 2 SPI bus interfaces
• 2 UART interfaces
• All digital pins are user configurable for
general purpose IO
• Flexible clock selection, default operation
from 12.288MHz
• Internal PLL clock multiplier for digital
logic
• RTC
• 128-bit AES hardware decryption

Firmware and VSOS Features
• Decoders: MP3, WAV PCM from ROM.
AAC, WMA, Ogg Vorbis with special software
(restrictions apply, see Chapter 6,
Supported Decoders and File Formats).
• File I/O for SD cards
• USB host and slave libraries
• Extensive audio DSP library
• Flexible boot options
• Easy-to-write software interface with VSIDE