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SoC for wireless bluetooth mice features enhanced battery life

Avago Technologies has announced production availability for its ADNS-7630 BT (Bluetooth) 2.1 LaserStream System-on-Chip navigation sensor for wireless mouse applications. It is a laser navigation sensor to integrate a BT 2.1 transceiver, stand-alone baseband processor and VCSEL surface illuminator into a single package. Compared to LED-based mice, laser mice track reliably on a greater variety of smooth surfaces as claimed by the company. The device enhances battery life extending usage to more than 6months from two AA battery cells and simplifies Bluetooth mouse design, helping shorten time to market. The technology provides precise high-speed tracking on virtually all surfaces - a feature that is attractive to both laptop users and gaming enthusiasts. With this proprietary technology, the mice feature high-speed motion detection of up to 30inches/s and 8g acceleration detection. In addition, laser power on all such devices is pre-calibrated in factory to meet IEC/EN60825-1 Class 1 Eye Safety standards, reducing assembly time and lowering cost for the manufacturer. The device contains an IAS (Image Acquisition System), a DSP (Digital Signal Processor, Bluetooth HID stream output and RF transceiver. Images acquired by the IAS are processed by the DSP to determine the direction and distance of motion. The DSP generates the ∆x and ∆y relative displacement values which are then converted for wireless transmission to the Bluetooth host. All these processes are automatically executed by the device without the mouse manufacturer being involved with source code or firmware.

The device supports multiple I/Os which can be configured as buttons and LED indicators. Each button can be programmed to have several functions, depending on if it is clicked once, double-clicked, or long-pressed. Button functions include KeyMap for keyboard shortcut keys, media buttons for audio control, and mouse resolution increase/decrease/rotate features. The product also supports both mechanical and optical z-wheel and tilt-wheel functions, programmable resolution, four-axis sensor rotation and configurable low power operating modes for extended battery life. The MConfig software from the company gives manufacturers the ability to store configuration settings in an external 128kbit EEPROM so that a diverse range of markets can be served by one basic design. Some additional device specifications are such as programmable resolution of 200 to 3000cpi in 250cpi increments; single 3V supply; and up to 10 I/O pins for flexible configuration.