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| 型号： | MICRF505DEV1 |
| 厂商： | Micrel Inc |
| 文件页数： | 23/42页 |
| 文件大小： | 0K |
| 描述： | KIT DEV RADIOWIRE 850-950MHZ |
| 标准包装： | 1 |
| 系列： | RadioWire® |
| 类型： | 收发器，ISM |
| 频率： | 850MHz ~ 950MHz |
| 适用于相关产品： | MICRF505 |
| 已供物品： | 2 个板，电池，线缆，CD |
| 产品目录页面： | 571 (CN2011-ZH PDF) |
| 其它名称： | 576-1606 |
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Micrel
Bit Synchronizer
MICRF505BML/YML
A6..A0
0000110
0000111
D7
-
BitRate_clkS1
D6
ModclkS2
BitRate_clkS0
D5
ModclkS1
RefClk_K5
D4
ModclkS0
RefClk_K4
D3
BitSync_clkS2
RefClk_K3
D2
BitSync_clkS1
RefClk_K2
D1
BitSync_clkS0
RefClk_K1
D0
BitRate_clkS2
RefClk_K0
A bit synchronizer can be enabled in receive mode
by selecting the synchronous mode (Sync_en=1).
The DataClk pin will output a clock with twice the
frequency of the bit rate (a bit rate of 20 kbit/sec
gives a DataClk of 20 kHz). A received symbol/bit on
DataIXO will be output on rising edge of DataClk.
The micro controller should therefore sample the
symbol/bit on falling edge of DataClk.
The bit synchronizer uses a clock which needs to be
programmed according to the bit rate. The clock
frequency should be 16 times the actual bit rate (a
bit rate of 20 kbit/sec needs a bit synchronizer clock
with frequency of 320 kHz). The clock frequency is
set by the following formula:
where
f BITSYNC_CLK : The bit synchronizer clock
frequency (16 times higher than the bit rate)
f XCO : Crystal oscillator frequency
Refclk_K: 6 bit divider, values between 1 and
63
BitSync_clkS: Bit synchronizer setting, values
between 0 and 7
Refclk_K is also used to derive the modulator clock
and the bit rate clock.
At the beginning of a received data package, the bit
synchronizer clock frequency is not synchronized to
the bit rate. When these two are maximum offset to
f BITSYNC _ CLK =
October 2006
f XCO
Re fclk _ K × 2 ( 7 ? BITSYNC _ clkS )
23
each other, it takes 22 bit/symbols before
synchronization is achieved.
M9999-103106
+1 408-944-0800
相关PDF资料 |
PDF描述 |
|---|---|
| MICRF506DEV1 | EVAL BOARD EXPERIMENTAL MICRF506 |
| MICRF507YML TR | TXRX FSK LOW PWR W/AMP 32MLF |
| MICRF600DEV1 | KIT DEV RADIOWIRE 902-928MHZ |
| MK01-C | SENSOR REED SPST-NO SMD |
| MK01-H | SENSOR REED SPDT-CHANGE SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MICRF505DEV1 | 制造商:Micrel Inc 功能描述:KIT MICRF505 EVALUATION |
| MICRF505L | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:850MHz and 950MHz ISM Band Transceiver |
| MICRF505LYML | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MICRF505LYML TR | 功能描述:射频收发器 850MHz to 950MHz, 2.25V to 5.5V FSK Transceiver with +10dBm Power Amplifier 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 |
| MICRF505YML | 制造商:Micrel Inc 功能描述:433/915MHZ ITRANSCEIVER SMD MLF32 制造商:Micrel Inc 功能描述:433/915MHZ ITRANSCEIVER, SMD, MLF32 制造商:Micrel Inc 功能描述:433/915MHZ ITRANSCEIVER, SMD, MLF32; Frequency Min:850MHz; Frequency Max:950MHz; Modulation Type:FSK; Sensitivity dBm:-111dBm; Data Rate:200Kbps; Supply Voltage Min:2V; Supply Voltage Max:2.5V; RF IC Case Style:MLF; No. of Pins:32; ;RoHS Compliant: Yes |
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