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)： 33/66頁
文件大?。?/td> 748K
代理商： MRF24J40-IMM
2006 Microchip Technology Inc.
Advance Information
DS39776A-page 31
MRF24J40
7.2.2
TRANSMISSION STATUS
When a transmission completes, the TXIF flag of the
ISRSTS register will become set. Once the TXIF bit is
set, the status of the transmission is located in the
TXSR register.
7.3
Receiving Packets
The following section details the reception of a
non-secured frame. When the MRF24J40 receives a
packet that passes the MAC layer addressing, thresh-
old and packet type filters, it will indicate the reception
of this packet to the host controller by setting the RXIF
bit (ISRSTS<3>). The packet will remain in the buffer
until the host frees the buffer. No other packets can be
received while the buffer is holding a packet.
7.4
RX MAC
The RX MAC block will do CRC checking, parse the
received frame type and address recognition, then
store the received frame into RX FIFO. In addition to
the IEEE 802.15.4 packet, there are also 2 bytes of
information that are appended to the end of the packet
after the FCS field: LQI and RSSI.
The behavior of RX FIFO follows a certain rule. When
a received packet is not filtered or dropped, a received
interrupt/status will be issued. The interrupt is
read-to-clear to save host operation time. However, the
RX FIFO is flushed only using the following three
methods:
The host reads the first byte and the last byte to
the packet
The host issues RX flush
A software is reset
For RX filter function, the Promiscuous mode is
supported to receive all FCS-ok packets. An Error mode
is supported to receive all packets that successfully
correlated PHY level preamble and delimiter.
REGISTER 7-2:
TXSR: TX MAC STATUS REGISTER
R-0
R-0
R-0
R-0
r
R-0
r
R-0
r
R-0
r
R-0
r
TXRETRY<7:6>
CCAFAIL
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 7-6
TXRETRY7:TXRETRY6:
Retry Times bits
Defines the retry times of the most recent TXN FIFO transmission.
CCAFAIL:
Clear Channel Assessment (CCA) Status of Last Transmission bit
1
= CCA failed
0
= CCA passed
Reserved:
Maintain as ‘
0
’
bit 5
bit 4-0
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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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