Overview
- Enhanced Data Rate (EDR) compliant for both 2Mbps and 3Mbps modulation modes
- 4Mbits integral ROM
- Bluetooth® v2.1+EDR system (backwards compatible with v1.1/1.2/2.0 devices)
- Full-speed Bluetooth operation with full Piconet support
- Scatternet support
- Extended SCO (eSCO) support
- 1.8V core, 1.7 to 3.6V I/O
- Low-power 1.8V operation (integral 1.8V regulator)
- Minimal external components required
- USB and dual UART ports to 3Mbaud
- Support for 802.11 coexistence
- CSP or VFBGA packaging (pin compatible with BGA-packaged BlueCore™2 / 3)
BlueCore4-ROM is a single chip radio and baseband IC for Bluetooth 2.4GHz systems including enhanced data rates (EDR) to 3Mbps. With the on-chip CSR Bluetooth software stack it provides a fully compliant Bluetooth system for data and voice communications.
BlueCore4-ROM is designed to reduce the number of external components required, to ensure that production costs are minimised.
The device incorporates auto-calibration and built-in self-test (BIST) routines to simplify development, type approval and production test. All hardware and device firmware is fully compliant with the Bluetooth v1.2 specification (all mandatory and optional features including eSCO). To improve the performance of both Bluetooth and 802.11b/g co-located systems a wide range of co-existence features are available including a variety of hardware signalling: basic activity signalling and Intel WCS activity and channel signalling.
The VFBGA of BlueCore4-ROM is pin-compatible with BlueCore3-ROM (VFBGA).
Applications
- As mobile phones/smart phones (and PDAs) integrate higher resolution digital cameras, transferring the image files becomes time consuming - EDR Bluetooth means that a 1Mb image download, which currently takes about 12 seconds, will now only take 4 seconds.
- As 'one phone' converged cordless phone (using Bluetooth) and cellular phones (using 2.5 or 3G) with a single telephone number become popular, the higher speed Bluetooth radio connection from the cordless home or business access point will allow for the simultaneous transfer of more data whilst the telephone call is being placed over the fixed line infrastructure.
- PCs will increasingly be asked to support multiple Bluetooth links as users type on a Bluetooth keyboard and move a Bluetooth mouse while listening to music on a set of Bluetooth stereo headphones and synchronising contact details with their phone or using the phone as a modem to connect to an email or internet service.
- Bluetooth has previously been restricted to application in ink-jet printers but EDR will enable data to be transmitted at speeds suitable for laser printers.
- EDR will also open up Bluetooth to potentially wider applications in home-entertainment.
- A Dolby 5.1 surround sound system typically transmits its signal at rate of up to around 1Mbps. Bluetooth EDR could offer a potential cost-effective solution for removing the wires from such systems.
- Other applications: access points, computer accessories (cards, dongles), digital cameras