EE Times Under the Hood - June 23, 2008 - (Page U32)

UTH0623DIGI_pg28_40.qxd 6/10/08 3:53 PM Page 32 under the hood: w w w. e e t i m e s . c o m D I G I T A L HOME • w w w. t e c h o n l i n e . c o m Multizone digital audio BY PATRICK MANNION I t was clean-sheet thinking that drove the engineers at Sonos Inc. to brainstorm on a multizone digital music system with a wireless, full-color LCD screen controller that lets users play all their digital music anywhere in their home or yard, and control it from the palm of their hand—no server required. aren’t buying amps or stereos like they used to, he said. “So the question became, how would it be done now?” Announced in 2004, the Sonos Digital Music System has gone through no less than eight downloadable upgrades, resulting in a product that not only gives users access to their own local music archives, but also to Internet radio and music outlets such as Napster, Rhapsody and Sirius. Historically, audio systems were all about amps and speakers, said Andrew Schulert, vice president of product development at Sonos. With the rise of digital formats such as MP3, people VIDEO For more insight, view the related TeardownTV episode at: cmptv.net/teardown/SonosMusic Sonos system comprises ZP100 (center) with integrated 50-W amplifier, ZP80 and wireless controller (left) Top view of ZP100 showing Atheros mini-PCI wireless card on upper left, Renesas SH-4 RISC processor in center, Samsung and ISSI memory on bottom left and Ethernet controller and magetics on bottom right Main amplifier controller board showing TI DSP bottom right, Cirrus Logic codec on left, Tripath Class T controller center (between two capacitors) and Class T interference suppression filter components on top ZP80 Zoneplayer insides showing Atheros mini-PCI card (top) and digital ICs with EMI protection (bottom) Controller's main board showing Atheros mini-PCI card, Renesas SH-4 controller and support memory, as well as ball-bearing-based motion detector (black square component, bottom left side) 32 Electronic Engineering Times, TechOnline | June 23, 2008 http://www.eetimes.com http://www.techonline.com http://cmptv.net/TearDownTV/SonosMusic

Table of Contents Feed for the Digital Edition of Under the Hood - June 23, 2008

Under the Hood - June 23, 2008 Extreme Design: SuitSat Pushes Desigers' Limits Evolution of the Smart Phone Mature Devices get Rolly Rocking GPS: Garmin Nuvi 750 vs. HP iPaq 310 Inside the Sony OLED TV Multizone Dgital Audio Flip Ultra Camcorder - An Ode to Clean Design Robot Guitar Tunes Itself E-book is a Sight for Sore Eyes Scientific Calculator Boils Down to Two ICs $100 BOM Eludes First OLPC Laptop 45 nm: What Intel Didn't Tell You Next Step in NAND Flash Evolution Surveillance on a Shoestring Hot 3G Phone Owes Debt to Analog SecurID Fob: Single-Chip Safety Net

Under the Hood - June 23, 2008

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