SAN FRANCISCO—Microchip Technology Inc. Wednesday (Sept. 5) launched two new digital audio mixer boards based on low pin count 32-bit PIC32 microcontrollers.
The DM320014, a USB digital audio accessory board, utilizes standard USB 2.0 Mini-B connectivity, Microchip (Chandler, Ariz.) said, while the DM320413, a digital audio mixer board, offers Apple portable device connectivity. The two development boards, each powered by Microchip’s PIC32MX250F128 32-bit MCU, enable audio and voice device development for a broad range of applications, according to the company.
The new boards are designed for easy integration of digital and analog audio into the target application, Microchip said. 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, according to the company.
Each of the development boards provides a starting point for a portable music player dock design, Microchip said. They are suited 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 said.
Microchip said the new boards demonstrate the company's commitment to making digital audio development easy with the PIC32 MX1 and MX2 microcontrollers. They feature 66 DMIPS of performance, up to 128 KB Flash, 32 KB 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, the company said. In addition, this series of MCUs offers an 8-bit parallel master port, Microchip's mTouch capacitive touch technology support and numerous other general-purpose features, the company said.
PIC32 digital audio accessory board (part #DM320413).
To maximize the cost effectiveness of designs that need to decode MP3 files, Microchip is also releasing a Compact MP3 Decode Library, the company said. This new code requires only 21 KB of RAM and can run on the PIC32MX250F128, Microchip said.
“We have seen excellent traction for the PIC32 in audio applications,” said Sumit Mitra, vice president of Microchip’s MCU32 division, in a statement. “With Microchip’s February announcement of the PIC32MX1 and MX2 series that features I2S CODEC interface, the demand has really taken off. These two new digital audio boards make it easy for developers to take advantage of the PIC32’s audio features.”
Both boards are available today, starting at $69.99, Microchip said. The DM320413 is offered exclusively to Apple MFi licensees, via Apple’s authorized distributor. The DM320014 is available for purchase at microchipDIRECT, the company said.
Microchip’s Compact MP3 Decode Library will be available by Sept. 28 in non-modifiable binary form for $197, or $4,497 for modifiable source code on microchipDIRECT. More information is available on the company's website.