收藏本站
9XCite ‐ PKG ‐ R? ? RS ‐ 232/485 ? RF ? Modem ? – ? Product ? Manual ? v2.1 ? [2007.01.04]
3. ? RF ? Modem ? Operation
3.1. Serial Communications
3.1.1. RS-232 and RS-485/422 Data Flow
The XCite RF Modem can enable a host device to communicate wirelessly. To transmit, the host
device simply sends serial data to the XCite RF Modem pins. The RF modem then converts the data
into FCC-approved RF data. Once transmitted, the RF data can be detected by receiving XCite RF
Modems, checked for integrity and then sent to a receiving device.
Figure ? 3 ‐ 01. Data ? Flow ? in ? RS ‐ 232 ? and ? RS ‐ 485/422 ? environments. ?
(Low ‐ asserted ? signals ? distinguished ? with ? a ? horizontal ? line ? over ? signal ? name.)
3.1.2. Serial Data
Data enters the MaxStream RF modem through the DI Pin as an asynchronous serial signal. The
signal should idle high when no data is being transmitted.
The UART performs tasks (such as timing and parity checking) needed for communication. Serial
communication consists of two UARTs which must be configured with compatible parameters
(Baud rate, parity, start bits, stop bits, data bits) to have successful communication. Each data
packet consists of a start bit (low), 8 data bits (least significant bit first) and a stop bit (high). The
following figure illustrates the serial bit pattern of data passing through the modem.
Figure ? 3 ‐ 02. Serial ? (UART) ? data ? packet ? 0x1F ? (decimal ?? 31 ? ) ? as ? transmitted ? through ? the ? XCite ? Module
Data ? Format ? is ? 8 ‐ N ‐ 1 ? (8 ? bits ?‐? No ? Parity ?‐? 1 ? Stop ? Bit)
In the example above, the MaxStream RF modem transfer 8 bits over-the-air [Selectable using BI
(Number of Bits) Parameter]. Start and stop bits of the UART signal are not transmitted over-the-
air, but are regenerated by the receiving modem
? ? 2007 ? MaxStream, ? Inc.
????? 12
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
XC0900A-03S COUPLER 90DEG 811-1000MHZ 3DB
XC1900A-03S COUPLER 90DEG 1700-2000MHZ 3DB
XC2401A8167R-G IC GPS LNA 1.6GHZ USPN-4B02
XC2404A816UR-G IC GPS LNA 1.6GHZ USP-8A01
XE112 LAMP T3-1/4 WITH XE GAS WHITE
XE1203SKC868XE2 KIT STARTER FOR XE1203 868MHZ
XE1205SKC868XE1 KIT STARTER FOR XE1205 868MHZ
XE1283I076TRLF IC TXRX UHF LOW POWER 72-LFBGA
相关代理商/技术参数
XC09-038WNC 功能描述:射频模块 9XCite 4mW transcei e antenna 38400 bps RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
XC09-038WNI 功能描述:射频模块 9XCite 4mW transcei e antenna 38400 bps RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm
XC-09-201-S 制造商:FLOYD BELL 功能描述:Alarm, Piezoelectric, 82 dBA to 103 dBA @ 2 Ft.,Extra Loud Continuous, 30-120VAC
XC-09-212-S 制造商:FLOYD BELL 功能描述:EXTRA LOUD CONTINUOUS, PANEL MOUNT CASE AND QUICK CONNECT BLADES WITH SCREWS TER
XC-09-212-SR 制造商:FLOYD BELL 功能描述:Alarm, Piezoelectric, 82 dBA to 103 dBA @ 2 Ft., Extra Loud Continuous, 2-12VDC
XC-09-212-W 制造商:FLOYD BELL 功能描述:EXTRA LOUD CONTINUOUS; PANEL MOUNT CASE AND WIRES TERMINATION
XC-09-301-S 制造商:FLOYD BELL 功能描述:Alarm, Piezoelectric, 82 dBA to 103 dBA @ 2 Ft.,Extra Loud Continuous,130-220VAC
XC-09-330-Q 制造商:FLOYD BELL 功能描述:EXTRA LOUD CONTINUOUS; PANEL MOUNT CASE AND QUICK CONNECT BLADES TERMINATION