BCM2040 Просмотр технического описания (PDF) - Broadcom Corporation

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BCM2040

SINGLE-CHIP BLUETOOTH® MOUSE AND KEYBOARD

Broadcom Corporation 

OVERVIEW

Power Control for LEDs

and Sensors

2 AAA

Batteries

BCM2040

EEPROM

Quad. Sensors

LEDs

X-axis

Y-axis

Scroll

Left

Middle/Scroll

Right

2 AAA

Batteries

BCM2040

EEPROM

Key Scan

Matrix

Indicators

CAPS NUM SCROLL

BCM2040 Mouse Block Diagram

BCM2040 Keyboard Block Diagram

The BCM2040 is a major breakthrough in the design of low-cost

Bluetooth mouse and keyboard devices. The BCM2040 is a true single

chip that integrates the entire profile, application, and Bluetooth protocol

stack and is fully compliant with the Bluetooth SIG specification for

human interface devices. The BCM2040 is fully compliant with the

version 1.2 Bluetooth specification, including adaptive frequency

hopping and fast connection, which are essential to mouse and keyboard

applications in personal computers.

Integration is key to achieving the system cost targets of today's PC

OEMs. By integrating all components within today's mouse and

keyboard into the BCM2040, low system costs can be achieved to

approach the price points of legacy-wired mice and keyboards. The

BCM2040 can interface directly to mouse optical or ball encoders and

keyboard scan matrices.

The Bluetooth baseband core has been optimized to maximize the battery

life and functionality required for a mouse or keyboard application.

Battery life has been optimized in the BCM2040 to meet greater than 6

months for the typical user using standard battery technology.

The BCM2040 integrates a high-performance radio implemented in

standard bulk CMOS. It incorporates a proprietary self-calibrating VCO

structure for both excellent phase noise and fast frequency hopping

covering the entire band. All filters have been fully integrated into the

device and are also self-calibrating to automatically compensate for

changes in temperature and any process variation during manufacturing.

The RF interface to the device fully integrates the T/R switch and its

associates matching circuits, enabling direct interface with the antenna.

The block diagrams show how the BCM2040 can be used in either a

mouse or keyboard application.

Broadcom®, the pulse logo, and Connecting everything® are trademarks of Broadcom Corporation and/

or its subsidiaries in the United States and certain other countries. Bluetooth™ is a trademark owned by

Bluetooth SIG. All other trademarks mentioned are the property of their respective owners.

®

BROADCOM CORPORATION

16215 Alton Parkway, P.O. Box 57013

Irvine, California 92619-7013

© 2004 by BROADCOM CORPORATION. All rights reserved.

2040-PB02-R

03/30/04

Phone: 949-450-8700

Fax: 949-450-8710

E-mail: info@broadcom.com

Web: www.broadcom.com

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