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參數(shù)資料
| 型號(hào)： | MRF24J40-I |
| 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)： | 32/66頁 |
| 文件大?。?/td> | 748K |
| 代理商： | MRF24J40-I |
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MRF24J40
DS39776A-page 30
Advance Information
2006 Microchip Technology Inc.
7.2.1
TRIGGER PACKET TRANSMISSION
The MRF24J40 handles the Clear Channel Assess-
ment (CCA) and Carrier Sense Multiple Access Colli-
sion Avoidance (CSMA-CA) algorithms in hardware.
The MRF24J40 also handles automatic retransmission
of packets that require an ACK. If the frame control field
of the packet requires an ACK, the ACKREQ bit
(TXNMTRIG<2>) needs to be set before transmission.
Once the TX FIFO is loaded with the data to transmit
the TXRTS bit (TXNMTRIG<0>) is used to transmit the
packet.
REGISTER 7-1:
TXNMTRIG: TRIGGER AND SETTING FOR NORMAL FRAME (CAP) REGISTER
U-0
—
U-0
—
U-0
—
R-0
R/W-0
R/W-0
ACKREQ
(1)
R/W-0
SECEN
(1)
W-0
PENDACK
INDIRECT
(1)
TXRTS
bit 7
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-5
bit 4
Unimplemented:
Read as ‘
0
’
PENDACK:
Data Pending Status in ACK bit
Status of the data pending bit in ACK from previous transmission. This bit is reset by hardware on the
next transmission.
1
= Data pending bit was set
0
= Data pending bit was cleared
INDIRECT:
Activate Indirect Transmission bit
(1)
1
= Indirect transmission enabled
0
= Indirect transmission disabled
ACKREQ:
TX Packet in TXN FIFO needs ACK Response bit
(1)
1
= ACK requested
0
= No ACK requested
SECEN:
Secure Current TX Packet bit
(1)
1
= Secure packet
0
= Send packet without securing it
TXRTS:
Trigger TX MAC to Send the Packet in TX FIFO bit
1
= Send the packet in the TX FIFO, automatically cleared by hardware
bit 3
bit 2
bit 1
bit 0
Note 1:
This bit is cleared at the next triggering of TXN FIFO.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MRF24J40-I/ML | 功能描述:射頻收發(fā)器 2.4 Ghz IEEE/ZigBee RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| MRF24J40-I/ML | 制造商:Microchip Technology Inc 功能描述:ZIGBEE Transceiver IC |
| MRF24J40-I/T | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:IEEE 802.15.4? 2.4 GHz RF Transceiver |
| MRF24J40-IMM | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:IEEE 802.15.4⑩ 2.4 GHz RF Transceiver |
| 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 |
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