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CD-ROM Fiches technique(PDF) 2 Page - AVAGO TECHNOLOGIES LIMITED

No de pièce CD-ROM
Description  USB 2.4GHz RF Wireless Laser Mouse Designer’s Kit
Download  8 Pages
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Fabricant  AVAGO [AVAGO TECHNOLOGIES LIMITED]
Site Internet  http://www.avagotech.com
Logo AVAGO - AVAGO TECHNOLOGIES LIMITED

CD-ROM Fiches technique(HTML) 2 Page - AVAGO TECHNOLOGIES LIMITED

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Figure 1. Sectional view of PCB assembly highlighting all laser mouse components
(laser mouse sensor, clip, lens, VCSEL, PCB, and base plate)
The CC2500 is a single chip 2.4GHz transceiver designed
for very low power wireless applications. The circuit
is intended for the ISM and SRD frequency band at
2400MHz-2483.5MHz. The RF transceiver is integrated
with a highly configurable baseband modem which
has a configurable data rate up to 500kbps. CC2500
provides extensive hardware support for packet han-
dling, data buffering, burst transmissions, clear channel
assessment, link quality indication and wake on radio.
The main operating parameters and the 64-byte trans-
mit/receive FIFOs of CC2500 can be controlled via an
SPI interface.
The Holtek HT82K68E is an 8-bit high performance
peripheral interface OTP microcontroller, designed for
multiple I/O product and HT68K96E are the 8-bit high
performance RISC-like microcontroller designed for USB
product applications. A HALT feature is included in both
HT82K68E and HT68K96E to reduce power consump-
tion.
This kit is connectable to a PC via the USB port. It is
based on the 2.4 GHz RF technology, the data gener-
ated from displacement detection/button status in the
laser mouse is encoded with a pre-defined serial type
protocol handled by firmware in the MCU. In the RF
stage, the encoded data is used for FSK modulation. The
captured data from the RF receiver stage is decoded
with a corresponding packet format used for mouse ap-
plications. The final data is sent to the host through the
USB interface.
SENSOR
VSCEL PCB
BASE PLATE
LENS
SURFACE
VSCEL
CLIP
PCB


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