BlueCore™4-ROM Plug-n-Go

General Description
The BlueCore™4-ROM Plug-n-Go™ is a single chip radio and baseband IC for Bluetooth 2.4GHz systems. It is implemented in 0.18μm CMOS technology.
BC41B143A contains 4Mbit of internal ROM memory. When used with CSR's Bluetooth stack, it provides a fully compliant Bluetooth system to v2.0+EDR of the specification for data and voice.
BlueCore™4-ROM Plug-n-Go has the same pinout and electrical characteristics as BlueCore™ Flash Plug-n-Go, enabling development of custom code before committing to ROM. To preserve compatibility, it also has the same pinout as BlueCore™2-ROM Plug-n-Go and BlueCore2-Flash Plug-n-Go.
BlueCore™4-ROM Plug-n-Go has been designed to reduce the number of external components required which ensures production costs are minimised. The 0.8mm pitch BlueCore™4-Plug-n-Go can be used on either two or four layer PCB construction.
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 v2.0+EDR specification.

Radio
Direct 50Ω connection to a common Tx/Rx antenna
Bluetooth v2.0+EDR specification compliant
Extensive built-in self-test minimises production test time
No external trimming is required in production
Antenna matching and filtering within IC

Transmitter
+6dBm RF transmit power with level control from on-chip 6-bit DAC over a dynamic range >30dB
Class 2 and Class 3 support without the need for an external power amplifier or Tx/Rx switch

Receiver
Integrated channel filters
Digital demodulator for improved sensitivity and co-channel rejection
Real-time digitised RSSI available on HCI interface
Fast AGC for enhanced dynamic range

Synthesiser
Fully integrated synthesiser requires no external VCO varactor diode, resonator or loop filter
Compatible with crystals between 8 and 32MHz (in multiples of 250kHz) or an external clock
Accepts 7.68, 14.4, 15.36, 16.2, 16.8, 19.2, 19.44, 19.68, 19.8 and 38.4MHz TCXO frequencies for GSM and CDMA devices with sinusoidal or logic level signals

Baseband and Software
Internal programmed 4Mbit ROM for complete system solution
48kbyte on-chip RAM allows full speed Bluetooth data transfer, mixed voice and data, plus full seven slave Piconet operation
Logic for forward error correction, header error control, access code correlation, demodulation, CRC, encryption bitstream generation, whitening and transmit pulse shaping
Transcoders for A-law, μ-law and linear voice from host and A-law, μ-law and CVSD voice over air

Bluetooth Stack
CSR's Bluetooth Protocol Stack runs on-chip in a variety of configurations:
Standard HCI (UART or USB)
Fully embedded to RFCOMM
Customer specific builds with embedded application code