Communications XMOS: Home audio over Ethernet and wireless

Communications XMOS: Home audio over Ethernet and wireless

2013/06/13

XMOS has announced a reference design for Ethernet audio visual bridging (AVB) on its xCORE microcontrollers that allows daisy-chaining of audio products.

Ethernet AVB allows audio and video signals to be streamed with controlled latency over standard Ethernet and 802.11 wireless networks.

Ethernet AVB daisy-chain (AVB-DC) removes the need for a central Ethernet AVB switch, and is intended for products such as microphones and speakers.

“Daisy-chain capability allows installers to employ a much simpler network topology, reducing the cabling and installation costs for an AVB network, and it allows the creation of plug-and-play products,” claimed the firm. “It promises a revolution in the audio industry, opening up applications that previously were not viable. End-users will be able to connect together computers, audio devices and audio processing equipment, forming an Ethernet AVB network as they go. Consumer laptops such as the Apple MacBook and MacBook Air already support Ethernet AVB.”

The firm’s XS1-L16 16-core microcontroller is at the heat of the design, and can integrate two separate Ethernet AVB interfaces plus an AVB switch fabric.

It needs no external DRAM or operating system, and supports: up to four streams at 48kHz or two streams at 96kHz sample rate.

To back it up, there will be a hardware development kit in the autumn, and the firm has other Ethernet AVB reference designs.

The reference design is on show at Infocomm13 in Orlando this week.

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