Tampere, Finland: Those looking for a simpler way to create a state-of-the-art personal music player or recorder may want to consider the VS1005 audio-processing SoC. All that’s needed, in addition to VLSI Solution’s chip, are three additional circuits—a NAND flash, axis accelerometer, and power-management device.
The VS1005 takes a new approach toward application development when compared to VLSI's earlier products. The VSOS multitasking operating system and MegaLib object code library offer services that can be used with the company’s VSIDE integrated development environment. The combination makes writing applications to VS1005’s 256kB RAM a straightforward and intuitive process.
To further extend the SoC’s usability, code can be loaded dynamically from any nonvolatile memory, including its optional internal 1024kB flash memory. The internal flash memory can be protected, making it possible for developers and third parties to protect their code.
The SoC contains an extensive set of peripheral interfaces, including controllers for Hi-speed USB host/slave, SD card, parallel NAND flash, SPI, Ethernet, S/PDIF, I\\[SUPERSCRIPT 2\\]S master/slave and UART. It also includes 24-bit ADCs and DACs, headphone and microphone amplifiers, linear regulators, a real-time clock, and an FM tuner with RDS. Controlled by a DSP, all of these features maximise flexibility when creating hi-fi stereo audio products.
The VS1005 features flexible signal paths; digital audio inputs and outputs can be independent of analogue inputs and outputs. Digital interfaces like S/PDIF enable easy and high-quality digital connectivity to home stereo systems. In addition, a digital sample-rate converter allows for inputs and outputs with different sample rates.