收藏本站
MRF24J40MC
1.3.2
ENERGY DETECTION (ED)
1.3.3
SLEEP
Before performing an energy detection (see Section
3.6.1 “RSSI Firmware Request (RSSI Mode 1)” in the
“MRF24J40 Data Sheet” (DS39776)), perform the
following steps:
To get the lowest power consumption from the
MRF24J40MC module during Sleep, it is necessary to
disable the PA, PA voltage regulator and LNA. To do
this, perform the following steps:
1.
2.
Configure the internal RF state machine to normal
operation (TESTMODE (0x22F<2:0>) = 000 ).
Configure GPIO2 and GPIO1 direction for
output (TRISGP2 (0x34<2>) = 1 and TRISGP1
1.
2.
Configure the internal RF state machine to normal
operation (TESTMODE (0x22F<2:0>) = 000 ).
Configure the GPIO3, GPIO2 and GPIO1
direction for output (TRISGP3 (0x34<3>) = 1 ,
(0x34<1>) = 1 ).
TRISGP2 (0x34<2>) =
1
and TRISGP1
3.
Set GPIO2 (0x33<2>) =
1 and GPIO1
(0x34<1>) = 1 ).
(0x32<1>) = 0 . This enables the LNA and
disables the PA.
3.
Set GPIO2 (0x33<2>) = 0 and GPIO1 (0x32<1>)
= 0 . This disables the LNA and the PA.
4.
Perform the energy detection following the steps
in Section 3.6.1 “RSSI Firmware Request (RSSI
Mode 1)” in the “MRF24J40 Data Sheet”
(DS39776).
Note:
The LNA will amplify the received signal.
4.
5.
Set GPIO3 (0x33<3>) = 0 . This shuts down the
voltage regulator U5 that supplies 2.2 volts to
the PA.
Put the MRF24J40 to Sleep following the steps
in the “MRF24J40 Data Sheet” (DS39776).
The RSSI value will include the receive
signal strength plus the LNA amplification.
When waking the module, re-enable the PA/LNA Mode.
? 2011 Microchip Technology Inc.
Preliminary
DS75002A-page 9
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MRF49XAT-I/ST IC RF TXRX 433/868/915 16-TSSOP
MRF89XA-I/MQ TXRX ISM SUB-GHZ ULP 32QFN
MRF89XAM9A-I/RM IC TXRX MOD 915MHZ ULP SUB-GHZ
MRX-001-433DR-B MODULE RECEIVER 433MHZ 18DIP
MRX-002-433DR-B MODULE RECEIVER 433MHZ 18DIP
MRX-002SL-433DR-B MODULE RCVR 433MHZ SAW LN 24DIP
MRX-005-915DR-B MODULE RECEIVER 915MHZ 18DIP
MRX-005SL-915DR-B MODULE RCVR 915MHZ SAW LN 24DIP
相关代理商/技术参数
MRF24J40T-I/ML 功能描述:射频收发器 2.4 Ghz IEEE/ZigBee transceiver RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray
MRF24WB0MA 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2.4 GHz, IEEE Std. 802.11b? RF Transceiver Module
MRF24WB0MA/RM 功能描述:WiFi/802.11模块 WiFi Transceiver w/PCB antenna RoHS:否 制造商:Taiyo Yuden 支持协议:802.11 b/g/n 频带: 数据速率:150 Mbps 接口类型:SDIO 传输功率（最大）: 天线连接器类型: 工作电源电压:3.4 V to 5.5 V 传输供电电流: 接收供电电流: 最大工作温度:+ 80 C 尺寸:35 mm x 15 mm x 2.9 mm
MRF24WB0MA_13 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:MRF24WB0MA/MRF24WB0MB Data Sheet 2.4 GHz IEEE 802.11ba?￠
MRF24WB0MB 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2.4 GHz, IEEE Std. 802.11b? RF Transceiver Module
MRF24WB0MB/RM 功能描述:WiFi/802.11模块 WiFi Transceiver w/uFL connector RoHS:否 制造商:Taiyo Yuden 支持协议:802.11 b/g/n 频带: 数据速率:150 Mbps 接口类型:SDIO 传输功率（最大）: 天线连接器类型: 工作电源电压:3.4 V to 5.5 V 传输供电电流: 接收供电电流: 最大工作温度:+ 80 C 尺寸:35 mm x 15 mm x 2.9 mm
MRF24WG0MA_12 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:MRF24WG0MA/MB Data Sheet 2.4 GHz IEEE 802.11b/ga?￠
MRF24WG0MA-I/RM 功能描述:WiFi/802.11模块 PCB ANTENNA RoHS:否 制造商:Taiyo Yuden 支持协议:802.11 b/g/n 频带: 数据速率:150 Mbps 接口类型:SDIO 传输功率（最大）: 天线连接器类型: 工作电源电压:3.4 V to 5.5 V 传输供电电流: 接收供电电流: 最大工作温度:+ 80 C 尺寸:35 mm x 15 mm x 2.9 mm