DAI - Digital Audio Interface OEM modules

A series of small form-factor modules has been designed, with the goal of enabling the addition of specialized I/O interfaces to existing designs in the pro audio field. DAI (Digital Audio Interface) modules enclose custom IP blocks (in firmware, in hardware or both) and share a common connector pin-out, allowing the usage of different modules on the same design. Various interfaces with the external world are available, providing up to 64 audio channels in both directions, with flexible sync options and auxiliary data ports (SPI, UART).

Prebuilt firmware releases are available at no extra fee; as a standard practice, ZP Engineering offers customization services for firmware and/or VHDL code on existing DAI modules, enabling the integration of additional functions and specific capabilities.

DAI1, DAI2 This small form-factor module (8 x 6 cm) offers a high-quality digital interface with an IEEE-1394a engine, powered by the latest bridgeCo chipset. A set of robust MIDI and audio drivers are available at no extra cost for Windows XP (WDM, ASIO) and Mac OS X (Core Audio). This module provides an ideal solution for adding IEEE-1394a connectivity to an existing project. DAI1 is based on the high channel count DM1500 chip, while DAI2 is based on the lower cost DM1100 (production of DAI2 is subject to minimum quantities).

Three mounting options are possible (bottom-side, top-side and in-line 2mm header).

DAI1

Based on the industry-standard DM1500 Firewire processor by bridgeCo, the standard firmware build provides the following function:

• I2S mode, up to 16 audio inputs and 16 audio outputs, 24-bit word length
• I82 mode, up to 32 audio inputs and 32 audio outputs, 24-bit word length
• sample rates from 44.1 to 96 kHz
• ASIO driver, WDM driver on Windows XP/Vista
• Audio Unit driver for Mac OS X
• Virtual MIDI driver that makes the local MIDI port visible as a standard MIDI device

Other combinations and audio formats (ADAT, AES/SPDIF), as well as extended sample rates, can be developed on request.

A custom Control Panel allows direct control of settings, handling up to 4 modules in daisy-chain connection.

Evaluation Board

An evaluation board hosting a DAI module is available, enabling immediate verification and prototyping; for more details, please go to the DAI_EVB page.

Documentation

• Flyer of IEEE-1394 modules offered by ZP.
• Technical Reference for DAI modules.

For additional information, please contact us at