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| 型號： | DRM057 |
| 英文描述： | Open Loop Universal Motor Chopper based on the MC68HC908QT4 Microcontroller |
| 中文描述： | 開環(huán)通用汽車在MC68HC908QT4斬波基于單片機 |
| 文件頁數(shù)： | 39/48頁 |
| 文件大小： | 1131K |
| 代理商： | DRM057 |
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DRM050 — Rev 0
Designer Reference Manual
MOTOROLA
Receiver Firmware
39
Designer Reference Manual —
DRM050
Section 8. Receiver Firmware
8.1 Receiver Firmware Structure
The firmware consists of three main parts:
MAC Layer protocol
Application layer routines
USB interrupt routine
The MAC layer implements the RFWaves CSMA protocol. Please refer
to the section
4.1 MAC Layer Protocol
for a description of this layer.
Figure 8-1
shows the flow of the main application program. The USB
interrupt routine is not shown here. You may refer to another reference
design called
USB and PS2 Multimedia Keyboard by using the
MC68HC908JB8
for more detail
.
The main routine continually checks if there is any valid mouse or
keyboard data from the MAC layer. If so, the data will be converted to
USB report format and sent to the host via the endpoint 1 and endpoint 2.
IRQ serves for different interrupt events from the RFW-D100 chip when
USB is not in suspend mode.The IRQ ISR firmware will determine which
interrupt source caused the IRQ. It could be done by checking the IIR
register from RFW-D100 Baseband chip and then the corresponding
action can be taken by the interrupt service routine. During USB
suspend, the periodical wake-up trigger at IRQ can wake up MCU to
detect incoming packets and return to the host computer.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DRM10 | 功能描述:DIP 開關(guān)/ SIP 開關(guān) BCD 10 POS RoHS:否 制造商:Omron Electronics 位置數(shù)量:10 開關(guān)類型:DIP 執(zhí)行器:Rotary 端子節(jié)距:2.54 mm 觸點形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole |
| DRM1004 | 功能描述:DIP 開關(guān)/ SIP 開關(guān) ROTARY DIP SWITCH PLASTICSHAFT RoHS:否 制造商:Omron Electronics 位置數(shù)量:10 開關(guān)類型:DIP 執(zhí)行器:Rotary 端子節(jié)距:2.54 mm 觸點形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole |
| DRM101 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Blood Pressure Monitor Using the Flexis QE128 Family |
| DRM10C | 功能描述:SWITCH DIP MINI SHAFT 10POS T/H RoHS:否 類別:開關(guān) >> DIP 系列:DR 特色產(chǎn)品:RDM Series Rotary DIP Switch 標(biāo)準(zhǔn)包裝:70 系列:RDM 電路:十六進制 位置數(shù):16 觸點額定電壓:0.1A @ 42VDC 觸動器類型:用于工具旋轉(zhuǎn) 觸動器電平:凹槽式 安裝類型:通孔 方向:頂部觸動 可清洗:是 其它名稱:EG4977-5RDMAR16PIT |
| DRM10C04 | 功能描述:編碼式波段開關(guān) SW DIP MINI SHAFT 10POS T/H RoHS:否 制造商:C&K Components 位置數(shù)量:10 輸出代碼:Binary Coded Decimal 執(zhí)行器:Screwdriver 觸點額定值: 端接類型:Solder Pin 封裝:Tube |
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