参数资料
型号: MRF89XAT-I/MQ
厂商: Microchip Technology
文件页数: 74/140页
文件大小: 0K
描述: RF ISM BAND TXRX 32 QFN
标准包装: 1
频率: 863MHz ~ 870MHz,902MHz ~ 928MHz,950MHz ~ 960MHz
数据传输率 - 最大: 200kbps
调制或协议: FSK,OOK
应用: ISM
功率 - 输出: 12.5dBm
灵敏度: -113dBm
电源电压: 2.1 V ~ 3.6 V
电流 - 接收: 3mA
电流 - 传输: 25mA
数据接口: PCB,表面贴装
存储容量: *
天线连接器: PCB,表面贴装
工作温度: -40°C ~ 85°C
封装/外壳: 32-WFQFN 裸露焊盘
包装: 标准包装
其它名称: MRF89XAT-I/MQDKR
MRF89XA
3.9
Continuous Mode
In Continuous mode, the NRZ data to/from the
modulator/demodulator is accessed by the host
microcontroller on the bidirectional DATA pin (pin 20).
The SPI Data, FIFO, and packet handler are therefore
inactive. Figure 3-17 illustrates the Continuous mode
of operation.
FIGURE 3-17:
TX/RX
CONTINUOUS MODE BLOCK DIAGRAM
MRF89XA
DATA
Control
IRQ0
IRQ1 (DCLK)
Data
RX
SYNC
Recognition
SPI
CONFIG
CSCON
SCK
SDI
SDO
Datapath
FIGURE 3-18:
TX PROCESSING IN CONTINUOUS MODE
T_DATA T_DATA
DATA (NRZ)
DCLK
3.9.1
TX PROCESSING
3.9.2
RX PROCESSING
In TX mode, a synchronous data clock for a host
microcontroller is provided on the IRQ1 pin (pin 22). Its
timing with respect to the data is illustrated in Figure 3-
18 . DATA is internally sampled on the rising edge of
DCLK so the microcontroller can change the logic state
anytime outside the setup/hold time zone. The setup
and hold times are shown in gray in the Figure 3-18 .
The use of DCLK is compulsory in FSK and optional in
OOK.
If the bit synchronizer is disabled, the raw demodulator
output is made directly available on the DATA pin and
no DCLK signal is provided.
Conversely, if the bit synchronizer is enabled, synchro-
nous cleaned data and clock are made available on the
DATA and IRQ1 pins (pin 20 and 22). DATA is sampled
on the rising edge of DCLK and updated on the falling
edge as shown in Figure 3-19 .
DS70622C-page 74
Preliminary
? 2010–2011 Microchip Technology Inc.
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