News tagged ‘bluetooth’

The folks at iFixIt received a brand new iPod Touch, which they disassembled right away.

Both the touch's 3.5-inch LCD display as well as its Lithium-ion polymer battery are held in place with strips of double-sided tape. The WiFi antenna and circuitry, which are located at the top of the unit, are connected to the main logic board by wide orange cable that were designed to prevent external noise from interfering with the digital signals as they travel along the device, iFixIt says.

The specialty online reseller, which offers replacement parts for Macs and iPods, was particularly excited by its discovery of an unpublicized Broadcom BCM4325 Bluetooth chip within the device. The particular chipset supports BT2.1+EDR, and is necessary for the touch's built-in support of Nike+ iPod technology. It's unclear, however, whether the chip supports A2DP, which would pave the way for Apple and third-party developers to introduce stereo headphones for the player.

iFixIt also discovered brown rectangular component centered about three quarters of the way down the touch's logic board, which is suspected to be the device's speaker. Other discoveries include a 3.7 V Lithium-ion polymer battery with part number 616-0404, NAND flash memory from Micron with part number 29F64G08TAA, and an Apple-branded Samsung-manufactured ARM processor with SDRAM that's similar to the one employed by the iPhone.

via appleinsider and ifixit

IPhone and IPhone3G do not support A2DP technology. Now they do

"A2DP is designed to transfer a uni-directional 2-channel stereo audio stream, like music from an MP3 player, to a headset or car radio." - Wikipedia.

This device will work on iPhone, iPhone 3G, iPod nano, iPod Color and iPod Mini. The price is $62 at brano.

Specifications:

• Bluetooth Version: Version 2.0 compliant, Class II
• Bluetooth Support profile: A2DP, AVRCP
• RF Frequency: 2.4GHz / 79 Channel / AFH
• Coverage Range: Bluetooth standard 33 feet (10 meters)
• Power Supply: DC 3.3V

Portelligent and Semiconductor Insights published a document describing interals of IPhone 3G. Techonline described the details. (Previous IPhone 3G internals photos can be viewed here)

Commuunications (3G/GSM) are on Infineon chips. One for GSM/GPRS/EDGE, another for WCDMA/HSDPA (3G). GPS module is not SiRF as we all thought. Apple uses PMB 2525 Hammerhead II. The Hammerhead II integrates an assisted-GPS (A-GPS) baseband processor with a low-noise GPS RF front end and multi-path mitigation to avoid large errors in urban environments.

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