- 您现在的位置：买卖IC网 > PDF目录18713 > DR-TRC105-304-EV (RFM)BOARD EVALUATION 304MHZ RFM RFIC PDF资料下载
参数资料
| 型号： | DR-TRC105-304-EV |
| 厂商： | RFM |
| 文件页数： | 14/67页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION 304MHZ RFM RFIC |
| 标准包装： | 1 |
| 类型： | 收发器 |
| 频率： | 303.325MHz ~ 307.3MHz |
| 适用于相关产品： | TRC105 |
| 已供物品： | 2 个板，天线，电池 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页
3.2 Continuous Mode Data and Clock Recovery
The raw output signal from the demodulator may contain jitter and glitches. Data and clock recovery converts the
data output of the demodulator into a glitch-free bit-stream DATA and generates a synchronized clock DCLK to be
used for sampling the DATA output as shown in Figure 8. DCLK is available on pin IRQ1 when the TRC105 oper-
ates in continuous mode.
Figure 8
To ensure correct operation of the data and clock recovery circuit, the following conditions have to be satisfied:
?
?
?
A 1-0-1- 0… preamble of at least 24 bits is required for synchronization
The transmitted bit stream must have at least one transition from 0 to 1 or from 1 to 0 every 8 bits during
transmission
The bit rate accuracy must be better than 2 %.
Data and clock recovery is enabled by default. It is controlled by RXCFG12_DCLK_Dis[6] . If data and clock re-
covery is disabled, the output of the demodulator is directed to DATA and the DCLK output (IRQ1 Pin in continu-
ous mode) is set to 0.
The received bit rate is defined by the values of the MCFG03 and MCFG04 configuration registers, and is calcu-
lated as follows:
BR = F XTAL /(2*(C + 1)*(D + 1)), with C in the range of 0 to 255, and D = 31 (suitable for most applications)
with BR the bit rate in kb/s, F XTAL the crystal frequency in kHz, C the value in MCFG03, and D the value in
MCFG04. For example, using a 12.8 MHz crystal (12,800 kHz), the bit rate is 25 kb/s when C = 7 and D = 31.
3.3 Continuous Mode Start Pattern Detection
Start pattern detection is activated by setting the RXCFG12_Recog[5] bit to 1. The demodulated signal is com-
pared with a pattern stored in the SYNCFG registers. The Start Pattern Detect signal (PATTERN) is driven by the
output of this comparator and is synchronized by DCLK. It is set to 1 when a pattern match is detected, otherwise
set to 0. The pattern detect output is updated at the rising edge of DCLK. The number of bytes used for compari-
son is defined in the RXCFG12_Pat_sz[4..3] register and the number of tolerated bit errors for pattern detection
is defined in the RXCFG12_Ptol[2..1] register. Figure 9 illustrates the pattern detection process.
www.RFM.com E-mail: info@rfm.com
? 2009-2013 by RF Monolithics, Inc.
Technical support +1.800.704.6079
Page 14 of 67
TRC105 - 05/29/13
相关PDF资料 |
PDF描述 |
|---|---|
| GSCA06S2 | SWITCH ROTARY SIDE |
| DR-TRC103-950-EV | BOARD EVALUATION 950MHZ RFM RFIC |
| DR-TRC103-915-EV | BOARD EVALUATION 915MHZ RFM RFIC |
| DR-TRC103-868-EV | BOARD EVALUATION 868MHZ RFM RFIC |
| TC70N6C32K7680 | OSCILLATOR 32.7680 KHZ 2.5V SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DR-TRC105-315-DK | 功能描述:射频开发工具 TRC105 Development Kit 310-319 MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| DR-TRC105-315-EV | 功能描述:射频开发工具 TRC105 Evaluation Board 310-319 MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| DR-TRC105-345-DK | 功能描述:射频开发工具 TRC105 Development Kit 342-348 MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| DR-TRC105-345-EV | 功能描述:射频开发工具 TRC105 Evaluation Board 342-348 MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| DR-TRC105-372-DK | 功能描述:射频开发工具 TRC105 Development Kit 365-381 MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
发布紧急采购，3分钟左右您将得到回复。