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參數(shù)資料
| 型號(hào)： | MRF24J40-IMM |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | IEEE 802.15.4⑩ 2.4 GHz RF Transceiver |
| 中文描述： | IEEE 802.15.4標(biāo)準(zhǔn)⑩2.4 GHz射頻收發(fā)器 |
| 文件頁數(shù)： | 21/66頁 |
| 文件大?。?/td> | 748K |
| 代理商： | MRF24J40-IMM |
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2006 Microchip Technology Inc.
Advance Information
DS39776A-page 19
MRF24J40
5.0
IEEE 802.15.4-2003
5.1
Overview
Before discussing the use of the MRF24J40, it may be
helpful to review the structure of a typical data frame.
Users requiring more information should refer to the
IEEE 802.15.4 Standard.
5.2
Packet Format
Normal IEEE 802.15.4 compliant packets are between 5
and 127 bytes long. They are made up of several possi-
ble fields: destination address information, source
address information, a length field, data payload and a
Cyclic Redundancy Check (CRC). Additionally, a 4-byte
preamble field and Start-of-Frame Delimiter (SFD) byte
are appended to the beginning of the packet. Thus, traffic
seen on the air will appear as shown in Figure 5-1.
FIGURE 5-1:
PACKET FORMAT
Number
of
Bytes
4
Preamble
Field
Comments
SFD
1
Packet Length
1
Frame Control
2
Destination
Address
Information
0/4/10
Source Address
Information
0/2/4/8/
10
Sequence Number
1
Data Payload
0-122
FCS
2
Frame check sequence – CRC
Used to
calculate
FCS
Filtered
out by
module
Start-of-Frame
delimiter – Filtered
out by module
Short or long address of the destination
device plus the PAN identifier.
Length selected in the frame control.
Short or long address of the source
device plus the PAN identifier.
Length selected in the frame control.
Used to calculate
packet length
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MRF24J40MA | 制造商:Microchip Technology Inc 功能描述:WIRELESS TRANCEIVER MODULE, Supply Voltage Min:2.4V, Supply Voltage Max:3.6V, MS |
| MRF24J40MA-I/RM | 功能描述:Zigbee/802.15.4模塊 2.4GHz IEEE 802.15.4 Transceiver Module RoHS:否 制造商:Digi International 頻帶:902 MHz to 928 MHz 視線范圍: 數(shù)據(jù)速率: 靈敏度: 工作電源電壓:2.4 V to 3.6 V 傳輸供電電流:215 mA 接收供電電流:26 mA 輸出功率:250 mW 天線連接器類型:Wire 最大工作溫度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm |
| MRF24J40MAT-I/RM | 功能描述:射頻接收器 2.4GHz IEEE 802.15.4 Transceiver Module RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| MRF24J40MB-I | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:IEEE 802.15.4a?￠ 2.4 GHz RF Transceiver |
| MRF24J40MB-I/RM | 功能描述:Zigbee/802.15.4模塊 2.4GHz, 802.15.4 Xcvr w/int PA RoHS:否 制造商:Digi International 頻帶:902 MHz to 928 MHz 視線范圍: 數(shù)據(jù)速率: 靈敏度: 工作電源電壓:2.4 V to 3.6 V 傳輸供電電流:215 mA 接收供電電流:26 mA 輸出功率:250 mW 天線連接器類型:Wire 最大工作溫度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm |
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