Product category:
Reference Designs
News Release from: Avago Technologies | Subject: USB-PS/2 optical mouse reference design
Edited by the Electronicstalk Editorial
Team on 13 June 2002
Reference design puts optical mice on
USB and PS/2
Agilent Technologies has developed a combination Universal Serial Bus (USB)-PS/2 optical mouse reference design for PC pointing devices.
Agilent Technologies has developed a combination Universal Serial Bus (USB)-PS/2 optical mouse reference design for PC pointing devices Agilent collaborated with Cypress Semiconductor to offer a low-cost, full-featured optical mouse solution based on the Cypress CY7C63723 Encore (enhanced component reduction) USB microcontroller and the Agilent ADNS-2051 optical mouse sensor
This article was originally published on Electronicstalk on 8 Feb 2005 at 8.00am (UK)
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Reference design puts optical mice on USB
Agilent Technologies and Cypress Semiconductor Corp have combined to produce a combination USB-PS/2 reference design kit for high-performance corded optical mice.
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"Teaming Agilent's state-of-the-art optical navigation technology with Cypress's industry-leading USB microcontrollers gives the optical mouse market a cost-effective, fast time-to-market solution", said Michael Huether, Director of Marketing Europe, Middle East, Africa, Semiconductor Products Group.
"Reference designs enable more companies to develop and sell optical mice, which are rapidly gaining preference over traditional mechanical 'ball' mice".
The Agilent ADNS-2051 is a complete mouse navigation engine on a single chip, integrating an image sensor with a digital signal processor and an LED driver.
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With improved tracking performance and twice the resolution - 800cpi - the ADNS-2051 enables smoother, faster and more precise navigation control for both corded and cordless computer mice.
It operates on a single 5V power supply and features on-chip LED drive and power conservation mode during times of no movement.
The Cypress CY7C63723 Encore device features Cypress's proprietary M8 controller core - the industry's smallest - along with an integrated USB serial interface engine (SIE) and transceiver; integrated EPROM plus RAM for storage and data buffering; and optimised output drivers for EMI reduction.
Focusing on system cost reduction, Cypress' Encore family of USB microcontrollers employs an internal crystal-less oscillator and integrates several other components typically found off-chip in low-speed USB applications, such as pull-up resistors, wake-up circuitry and a 3.3V regulator.
The new combi-USB-PS/2 optical mouse reference design provides a complete resource for developers to use and customise their own designs.
It is configured for a standard three-button mouse with flexible I/Os allowing expansion to five buttons.
Data flows between the two chips across the ADNS-2051 SPI interface.
The design uses a single cable capable of connecting to a PC via a USB or PS/2 connector with an adapter.
It will automatically detect the type of interface attached, enabling a USB- or PS/2-only mouse option.
The EPROM-based microcontroller allows easy firmware modification, as well as storage of vendor and product IDs without an external EEPROM.
The joint optical mouse reference design kit includes a sample mouse with complete schematics, layout and firmware.
It is currently available from Cypress as the CY4622 and from Agilent as the ADNK-2051 optical mouse reference design kit. Request a free brochure from Avago Technologies ...
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