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Microchip unleashes digital audio mixer boards

07 Sep 2012

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Microchip Technology Inc. has introduced two digital audio mixer boards based on low pin count 32bit PIC32MX250F128 MCUs. The DM320014, a USB digital audio accessory board, uses standard USB 2.0 Mini-B connectivity, while the DM320413, a digital audio mixer board, offers Apple portable device connectivity. According to the company, the development boards enable audio and voice device development for various applications.

Both boards are geared for easy integration of digital and analog audio into the target application. Key features include interfaces for digital audio via USB Mini-B or the Apple iOS interface, line-in and microphone-in for convenient connectivity to analog audio sources, such as microphones or instrument pickups, and line-out and headphone out, for line-level output and headphone connectivity. Each provides an excellent starting point for a portable music player dock design. Additionally, these features allow the mixing of digital and analog audio. The development boards are suitable for applications in the consumer and automotive markets, such as consumer audio docks (including those in stereo systems), noise-canceling headsets, clock radios or A/V entertainment system sounds bars, as well as in automobiles that offer portable music player docking capabilities.

Microchip DM320413

The two boards feature 66DMIPS of performance, up to 128KB Flash, 32KB of RAM, USB, I2S interfaces and an advanced clocking scheme that provides the signals needed for the external CODEC while eliminating the need for a CODEC with a built-in PLL, detailed the company. In addition, this series of MCUs offers an 8bit Parallel Master Port (perfect for interface to an LCD), Microchip's mTouch capacitive touch technology support and numerous other general-purpose features.

Developers can begin designing today with these boards, using the Microchip's MPLAB X IDE. Both development boards can be programmed and debugged by the PICkit3 (part # PG164130), which is available separately for $44.95.

Both boards are available today, starting at $69.99. The DM320413 is offered exclusively to Apple MFi licensees, via Apple's authorized distributor. The DM320014 is available for purchase at microchipDIRECT.

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