Technical + Business Details On iPod Shuffle 3G’s Remote Chip
If you’ve read our review of the third-generation iPod shuffle and editorial on its remote control authentication chip yesterday, you already know that while the EFF was concerned about “DRM” in the chip, our concern was different:
“If you want a pair of headphones that will work to control the new iPod shuffle, you will now have to buy something that Apple either makes itself, or approves—this process has already led to needlessly overpriced video cables and chargers, as well as creating problems for many additional types of accessories that you may or may not have ever heard of.”
A source provided us with some additional insider details on the remote chip that might interest those of you who wanted to know more specifics on what’s going on here.
Internally, Apple has been referring to the chip as a transmitter chip; it is technically a dual-mode modulator that overlays remote control commands on top of the headphone or microphone signal, coupled with a controller in the iPod. According to Apple’s own documentation, the chip gets power from the iPod, then transmits encoded control information to the iPod, which has a controller that receives and decodes the button information. Using the chip, Apple’s microphone-equipped versions of the headset operate in either “button mode” or “tone mode,” sending control commands either as differing voltage levels or as ultrasonic tones ranging from 99 to 300kHz.
This source suggests that the chip can be seen in a positive or negative light. On the positive side, it provides developers access to a new part that Apple could have kept for itself and its own products. On the negative side, to get the chip, a developer is required to sign Apple’s Made For iPod agreement, which has serious consequences: first, Apple must issue its approval in advance for each specific remote controlled headphone product; only afterwards will the developer will be given access to the chips. Next, there are the other MFI issues—the contract (think App Store contract, multiplied), royalties on some product sales, monthly accounting reporting to Apple, and audits, amongst them. All this for an in-line remote control.
These details will be linked to yesterday’s editorial and the original review.
If you have a comment, news tip, advertising inquiry, or coverage request, a question about iPods or accessories, or if you sell or market products, read iLounge's Comments + Questions policies before posting, and fully identify yourself if you do. We will delete comments containing advertising, astroturfing, trolling, personal attacks, offensive language, or other objectionable content, then ban and/or publicly identify violators. Wondering why we're talking about something other than iPods? Check the Archives: Backstage has been here and kicking it since 2004.
- Apple posts guide for moving content from Android to iPhone
- Court throws out $368M FaceTime judgment against Apple
- Microsoft unveils iOS-compatible Universal Mobile Keyboard
- Apple: 33M iTunes users have accessed U2 album
- Apple’s iPhone 6 NFC chip restricted to Apple Pay use
- Apple names Apple Watch execs, now hiring others
- Apple posts removal guide for U2’s Songs of Innocence album
- Apple medical trials will provide HealthKit insights
- iLife and iWork apps to be pre-installed on 64/128 GB iPhone 6/6 Plus
- Report: Apple gets 0.15 percent from each Apple Pay transaction
- Apple Inc. iOS 8
- ZeroChroma Folio-Slide for iPad mini
- Zoom iQ6 XY Stereo Microphone for iPhone + iPad
- Bowers & Wilkins P5 Series 2 headphones
- Logitech Bluetooth Multi-Device Keyboard K480
- Cambridge Audio Bluetone 100 Bluetooth Speaker
- Cambridge Audio Go V2 Portable Bluetooth Speaker
- Soundfreaq Double Spot SFQ-09 Wireless Speaker
- iHome iBN6 Waterproof Bluetooth Speaker
- Grace Digital Ecostone Bluetooth Speaker
- Multi-Editorial: On Apple’s iPhone 6, iPhone 6 Plus + Apple Watch
- What’s New In Apple TV 7.0
- What’s New in iTunes 12
- iLounge Picks: Five Great Summer Party Speakers
- Editorial: Endings And Beginnings
- Live From CE Week 2014: Brand New iPad, iPhone + Mac Accessories!
- What’s New In iOS 8 For iPad, iPhone + iPod touch
- iLounge Multi-Editorial: WWDC 2014’s iOS 8, OS X Yosemite + More
- The Complete Guide to Apple TV Channels
- iHistory: From iPod + iTunes to iPhone, Apple TV + iPad, 2001 to 2010