參數(shù)資料
型號(hào): DRM055
英文描述: High Data Rate Wireless USB Optical Mouse Solution Using the MC68HC908QY4 and MC68HC908JB12
中文描述: 高數(shù)據(jù)速率的無(wú)線(xiàn)USB光學(xué)鼠標(biāo)解決方案使用MC68HC908QY4和MC68HC908JB12
文件頁(yè)數(shù): 27/48頁(yè)
文件大?。?/td> 1131K
代理商: DRM055
DRM050 — Rev 0
Designer Reference Manual
MOTOROLA
Multimedia Keyboard Transmitter
For More Information On This Product,
Go to: www.freescale.com
27
Designer Reference Manual —
DRM050
Section 5. Multimedia Keyboard Transmitter
5.1 Introduction
The LK24 has a built-in PLL with a low frequency crystal (32.768 kHz)
and is able to operate as fast as 4 MHz bus speed at 3.3 V. It contains
enough I/O pins for key matrix scanning. The main features of the
keyboard include:
2.4-GHz RF Link
1 Mbps data rate
Power management keys (power, wake and sleep) support
Multimedia keys support
5.2 System Overview
The keyboard transmitter consists of the LK24, the baseband IC and RF
Module from RFWaves, and DC/DC converter.
Figure 5-1
shows the
block diagram of the system.
F
Freescale Semiconductor, Inc.
n
.
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