Growing PC multimedia demands such as gaming, music, and movies require high quality audio support for the best user experience. Typically notebooks and other small form factor (SFF) devices have relied on onboard AC’97 solutions, however, the quality of such solutions can be compromised by noise, constrained layouts, and limitations inherent in AC’97 audio devices. Instead, the VIA Vinyl Envy24MT brings a new sort of audio solution to the notebook, optimized to reduce onboard noise and designed to bring a new generation of hi-fi audio to small form factor devices.

Benefits of VIA Vinyl Envy24MT

Low profile, low power design: Designed for low power consumption, and with a low-profile 128-pin TQFP package, the VIA Envy24MT meets the requirements of modern notebook and small form factor applications.

Extremely high-performance: With 24 bit performance and 192kHz sampling rates the VIA Envy24MT provides the highest audio playback and recording quality available to the PC audio enthusiast.

Wide range of connection options: The VIA Envy24MT enables support for 2-channel inputs and outputs for both digital and analog connections. The VIA Envy24MT also fully supports MIDI connections for audio workstation applications.

Easy to integrate: The VIA Envy24MT features support for a number of PC interfaces including PCI, Mini-PCI, and PCMCIA. The VIA Envy24MT also supports I²S and AC-link inputs and outputs allowing it to be easily combined with a wide range of codec or ADC/DAC solutions. The VIA Envy24MT also offers a full featured I2C interface, WDM drivers, and a software audio control center for easy manageability.


The VIA Vinyl Envy24MT Audio Controller is optimized for applications such as notebook audio with a low profile design, and ultra-low power requirements. Featuring support for a number of PC interfaces the VIA Envy24MT Audio Controller can be integrated onto PC motherboards, Mini-PCI cards, or PCMCIA cards. This design flexibility allows the VIA Envy24MT to be used as a standard PC feature, an add-on within a system, or integrated into external audio devices.

The VIA Envy24MT Audio Controller supports the latest 24-bit/192kHz high fidelity content through analog stereo inputs and outputs, as well digital audio connections. For audio workstation applications the Envy24MT also supports two MIDI ports, and low latency drivers such as ASIO.

What results is an audio solution with tremendous dynamic range making music more alive from the thundering booms of the bass to excellent mid and high frequency response. Combined with professional audio DACs, the Envy24MT becomes a serious hi-fi contender for playback and recording.

Envy24MT Block Diagram


Key Features

Sound Quality
» 24-bit resolution audio format support
» Sampling rates up to 192kHz
» Bit Accurate Transfers

» 2 synchronous I²S / AC-link output data stream pairs
» 2 synchronous I²S / AC-link input data stream pairs
» Multi-channel AC-link support
» Integrated S/PDIF transmitter with IEC958 line driver
» Digital loopback and stream routing mechanism
» Peak meters on all streams
» MPU-401 MIDI UART port
» ACPI and PCI PMI support

» PCI 2.2 interface with bus mastering and burst modes

Easy System Integration
» I2C subset interface for E2PROM and peripherals control
» 16-pin, direct access GPIO port
» 24.576/49.152 and 22.5742 MHz crystal operation
» Windows® WDM drivers

» 128-pin TQFP (14mm x 14mm body)

» 3.3V operating supply (5V tolerant I/O)

VIA Technologies Japan株式会社