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The company was founded in 1998 and split away from Cambridge Consultants as Cambridge Silicon Radio or CSR in 1999. The founding directors, who were all at Cambridge Consultants at the time were Phil O'Donovan, [2] James Collier and Glenn Collinson. [3] It was first listed on the London Stock Exchange in 2004. [4]
In 1991, O'Donovan joined Cambridge Consultants Ltd (CCL), the product design and development business of Arthur D. Little, where he became VP Telecoms and bid and won the Ericsson ERMES / FLEX pager chip development, the design of which in standard CMOS, was led by James Collier and which inspired the subsequent creation of Cambridge Silicon ...
A Cambridge Silicon Radio (CSR) BlueCore4 chip provides Bluetooth connectivity with compatible phones and devices. SYNC's major circuit board chips cost roughly US$27.80, which allows Ford to profitably sell the system at a much lower price than competitive offerings.
The Bluetooth protocol stack is split in two parts: a "controller stack" containing the timing critical radio interface, and a "host stack" dealing with high level data. The controller stack is generally implemented in a low cost silicon device containing the Bluetooth radio and a microprocessor.
The Windows Vista Bluetooth stack supports a kernel mode device driver interface besides the user-mode programming interface, which enables third parties to add support for additional Bluetooth Profiles. This was lacking in the Windows XP Service Pack 2 built-in Bluetooth stack, which had to be entirely replaced by a third-party stack for ...
Ember (now Silicon Labs) EM357 [73] 32-bit ARM Cortex M3 12 kB 192 kB on-chip, 512 kB on-board U.FL, on-board chip ceramic 0.65 μA 175 mA at 20 dBm TX power 32 mA 20 dBm max., software programmable -106 dBm 34.2 mm × 15 mm × 2.88 mm 2015 UART and SPI Ember's (now Silicon Labs') EmberZNetPRO [74] with MMB's RapidConnect family of firmware NXP
For the Bluetooth Low Energy stack, according to Bluetooth 4.0 a special set of profiles applies. A host operating system can expose a basic set of profiles (namely OBEX, HID and Audio Sink) and manufacturers can add additional profiles to their drivers and stack to enhance what their Bluetooth devices can do. Devices such as mobile phones can ...
Windows Vista RTM/SP1 with the Feature Pack for Wireless or Windows Vista SP2 work with Bluetooth v2.1+EDR. [58] Windows 7 works with Bluetooth v2.1+EDR and Extended Inquiry Response (EIR). [ 58 ] The Windows XP and Windows Vista/Windows 7 Bluetooth stacks support the following Bluetooth profiles natively: PAN, SPP, DUN , HID, HCRP.