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參數(shù)資料
| 型號： | 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標準⑩2.4 GHz射頻收發(fā)器 |
| 文件頁數(shù)： | 19/66頁 |
| 文件大?。?/td> | 748K |
| 代理商： | MRF24J40-I |
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2006 Microchip Technology Inc.
Advance Information
DS39776A-page 17
MRF24J40
4.3.2
WRITING LONG ADDRESS
REGISTERS
The long address space is accessed by sending a ‘
1
‘
as the first bit of the SPI transfer. The following 10 bits
are the address of the target register. The final bit is a
‘
1
‘ to indicate that the command is a write. On the next
clock edge of SCK, the Most Significant bit of the
register will shift out, followed by the rest of the bits.
4.4
Buffer Interface
The receive and transmit buffers in the MRF24J40 are
located in the long RAM address space. These buffers
are accessed using the same process as accessing the
long RAM control addresses. The received buffer is
read-only and should not be written to. The use of these
buffers is described in
Section 7.0 “Transmitting and
Receiving Packets”
.
FIGURE 4-6:
LONG ADDRESS WRITE
EXAMPLE 4-4:
LONG ADDRESS WRITE EXAMPLE
SCK
SDI
SDO
CS
A9
A8
A7
A6
A5
D7
D6
D5
D4
D3
D2
D1
D0
X
A4
A3
A2
A1
A0
1
X
1
void SetLongRAMAddress(WORD address, BYTE value)
{
CSn = 0;
SPIPut((((BYTE)(address>>3))&0b01111111)|0x80);
SPIPut((((BYTE)(address<<5))&0b11100000)|0x10);
SPIPut(value);
CSn = 1;
}
相關PDF資料 |
PDF描述 |
|---|---|
| MRF24J40-IMM | IEEE 802.15.4⑩ 2.4 GHz RF Transceiver |
| MRSM75 | Rotation detection MR sensor |
| MRUS51S | Micro power Built-in IC ultra-minimum MR sensor |
| MS-012AA | SOIC: 8−LEAD (POWER ICS ONLY) |
| MS1022 | PNP RF Amplifier Transistor Surface Mount |
相關代理商/技術參數(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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