VIA Vinyl EnvyUSB 2.0 Audio Controller

The VIA Envy VT1730 is an 8-channel, 24-bit/192 kHz audio controller specifically designed to achieve cinema-quality audio recording and playback in high fidelity USB and MIDI system applications. Whether it's using the High-Speed bandwidth capacity of USB 2.0 (480 Mb/s) to simultaneously support audio streams from a guitar, bass, keyboard and microphone, or delivering true-to-life sound to multiple speakers in a home theatre set-up, the VIA Envy VT1730 offers outstanding audio performance and impressive application flexibility.

The highly integrated single chip USB audio solution is embedded with a number of crucial modules, including a standard 8032 MCU core, USB transceiver, five I²C masters and one slave controller, an I²S controller, a serial flash controller, four SPI ports, phase locked loop (PLLs) with internal oscillator, and a 3.3 V~2.0V regulator.

The VIA VT1730 also supports multi-channel PCM digital audio format up to 24-bit resolution and 192 kHz sample rate as well as multiple audio bit streams of up to 5 Input streams and 6 Output streams. Additionally, the controller is capable of connecting 8 Inputs and 8 Outputs simultaneously in selectable I²S or MSB-justified Digital Audio Interface. An S/PDIF interface with two stereo output ports and one stereo input port also supports up to a 24-bit resolution and 192 kHz sample rate.

Feature Highlights

USB Interface
» USB 2.0 High-Speed (480 Mbps) Device Compliant
» USB 2.0 Full-Speed (12 Mbps) Device Compliant
» USB 2.0 High-Speed PHY Integrated
» USB Audio Class v1.0/ v2.0 Device Compliant
» USB Device Firmware Upgrade v1.1 Compliant

High Resolution, Multi-Channel PCM Audio Bit Streams
» Up to 24-bit, 192kHz sample rate
» Up to 5 Input Streams and 6 Output Streams

I²S Audio Interface
» 8 I2S Input
» 8 I2S Output
   - Mono/ 2-Ch
   - 16/20/24-bit
   - 32 / 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

S/PDIF Interface
» 2 Stereo SPDIF Output,
» 1 Stereo SPDIF Input
   - Mono / 2-Ch
   - 16 / 20 / 24-bit
   - SPIDIF In: 32 / 44.1 / 48 / 88.2 / 96 kHz
   - SPIDIF Out: 44.1 / 48 / 88.2 / 96 / 192 kHz

Blu-ray Disc™ Audio Content Protection
» 24-bit/192kHz audio output delivering cinema-level audio experience

MIDI Interface
» 3 MIDI In
» 3 MIDI Out
» Any MIDI port can be used as UART

Block Diagram

Resources

VIA Vinyl EnvyUSB image kit