Broadcom’s BCM2042 integrates a 2.4 GHz Bluetooth radio and a baseband processor onto a single chip.
In addition to integrated Bluetooth functionality, the BCM2042 keyboard and mouse chip includes a direct interface to a keyboard key scan matrix, optical mouse logic and an on-board boost regulator to provide the 3.3V of power required to operate a mouse LED.
Manufacturers only need to add an external crystal and a few passive components to produce a complete product.
In addition, the chip includes a built-in hardware interface to sensors from Agilent Technologies, supplier of the leading cordless optical mouse sensor on the market.
The BCM2042 provides an almost 50% reduction in current consumption over previous Broadcom products in active transmission mode. The new chip also includes Broadcom’s unique ultra low power mode that allows the chip to consume only 10 micro amps of current, while still performing immediate “wake up” when prompted. As a result, a wireless mouse can typically operate for up to 12 months powered by just two AA batteries.
Built-in firmware is compliant with the Bluetooth Human Interface Device (HID) profile. Broadcom’s WIDCOMM BTW (Bluetooth for Windows) software is compatible with the Bluetooth version 2.0 SIG specification including features such as adaptive frequency hopping to reduce interference and “fast connect” to extend battery life.
The BCM2042 Bluetooth keyboard and mouse chip is currently sampling to Broadcom’s early access partners. Pricing is available upon request.