The IrDA SIR physical layer specifies use of a Return to Zero, Inverte的简体中文翻译

The IrDA SIR physical layer specifi

The IrDA SIR physical layer specifies use of a Return to Zero, Inverted (RZI) modulationscheme that represents logic 0 as an infrared light pulse (see Figure 340).The SIR Transmit encoder modulates the Non Return to Zero (NRZ) transmit bit streamoutput from USART. The output pulse stream is transmitted to an external output driver andinfrared LED. USART supports only bit rates up to 115.2 Kbps for the SIR ENDEC. Innormal mode the transmitted pulse width is specified as 3/16 of a bit period.The SIR receive decoder demodulates the return-to-zero bit stream from the infrareddetector and outputs the received NRZ serial bit stream to the USART. The decoder input isnormally high (marking state) in the Idle state. The transmit encoder output has the oppositepolarity to the decoder input. A start bit is detected when the decoder input is low.• IrDA is a half duplex communication protocol. If the Transmitter is busy (when theUSART is sending data to the IrDA encoder), any data on the IrDA receive line isignored by the IrDA decoder and if the Receiver is busy (when the USART is receivingdecoded data from the IrDA decoder), data on the TX from the USART to IrDA is notencoded. while receiving data, transmission should be avoided as the data to betransmitted could be corrupted.• A 0 is transmitted as a high pulse and a 1 is transmitted as a 0. The width of the pulseis specified as 3/16th of the selected bit period in normal mode (see Figure 341).• The SIR decoder converts the IrDA compliant receive signal into a bit stream forUSART.• The SIR receive logic interprets a high state as a logic one and low pulses as logiczeros.• The transmit encoder output has the opposite polarity to the decoder input. The SIRoutput is in low state when Idle.• The IrDA specification requires the acceptance of pulses greater than 1.41 μs. Theacceptable pulse width is programmable. Glitch detection logic on the receiver endfilters out pulses of width less than 2 PSC periods (PSC is the prescaler valueprogrammed in the USART_GTPR). Pulses of width less than 1 PSC period are alwaysrejected, but those of width greater than one and less than two periods may beaccepted or rejected, those greater than 2 periods will be accepted as a pulse. TheIrDA encoder/decoder doesn’t work when PSC=0.• The receiver can communicate with a low-power transmitter.• In IrDA mode, the STOP bits in the USART_CR2 register must be configured to “1 stopbit”.
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IrDA SIR物理层指定使用归零,反转(RZI)调制<br>方案,该方案将逻辑0表示为红外光脉冲(请参见图340)。<br>SIR发送编码器对<br>USART输出的不归零(NRZ)发送比特流进行调制。输出脉冲流传输到外部输出驱动器和<br>红外LED。对于SIR ENDEC,USART仅支持最高115.2 Kbps的比特率。在<br>正常模式下,发送的脉冲宽度指定为比特周期的3/16。<br>SIR接收解码器对来自红外<br>检测器的归零比特流进行解调,并将接收到的NRZ串行比特流输出到USART。解码器输入为<br>在空闲状态下通常为高(标记状态)。发送编码器输出的<br>极性与解码器输入的极性相反。当解码器输入为低电平时,检测到起始位。<br>•IrDA是半双工通信协议。如果发送器忙(当<br>USART将数据发送到IrDA编码器时),<br>则IrDA解码器将忽略IrDA接收线上的任何数据,并且如果接收器忙(当USART接收<br>来自IrDA解码器的解码数据时) ,从USART到IrDA的TX上的数据未<br>编码。在接收数据时,应避免传输,因为要<br>传输的数据可能会损坏。<br>•0作为高脉冲发送,而1作为0发送。脉冲的宽度<br>在正常模式下,该值指定为所选位周期的3/16(见图341)。<br>•SIR解码器将符合IrDA的接收信号转换为<br>USART的比特流。<br>•SIR接收逻辑将高电平状态解释为逻辑1,将低脉冲解释为逻辑<br>零。<br>•发射编码器输出的极性与解码器输入的极性相反。<br>空闲时,SIR输出处于低电平状态。<br>•IrDA规范要求接受大于1.41μs的脉冲。所述<br>可接受的脉冲宽度是可编程的。接收器端的毛刺检测逻辑<br>滤除宽度小于2个PSC周期的脉冲(PSC是<br>在USART_GTPR中编程的预分频器值)。宽度小于1 PSC周期的脉冲始终<br>拒绝,但宽度大于一个且小于两个周期的<br>那些可以被接受或拒绝,大于两个周期的那些宽度将被接受为脉冲。<br>当PSC = 0时,IrDA编码器/解码器不起作用。<br>•接收器可以与低功率发射器通信。<br>•在IrDA模式下,必须将USART_CR2寄存器中的STOP位配置为“ 1个停止<br>位”。
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结果 (简体中文) 2:[复制]
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IrDA SIR 物理层指定使用返回零、反转 (RZI) 调制<br>将逻辑 0 表示为红外光脉冲的方案(参见图 340)。<br>SIR 传输编码器调节非返回零 (NRZ) 传输位流<br>来自 Usart 的输出。输出脉冲流传输到外部输出驱动器和<br>红外 LED。对于 SIR ENDEC,USART 仅支持高达 115.2 Kbps 的比特率。在<br>正常模式传输脉冲宽度指定为位周期的 3/16。<br>SIR 接收解码器从红外线解调归零位流<br>检测器并输出接收的 NRZ 串行位流到 USART。解码器输入为<br>通常处于空闲状态的高(标记状态)。传输编码器输出具有相反的<br>解码器输入的极性。当解码器输入较低时,检测到启动位。<br>• IrDA 是一个半双工通信协议。如果发射机繁忙(当<br>USART 正在向 IrDA 编码器发送数据),IrDA 接收线路上的任何数据都是<br>被 Irda 解码器忽略, 如果接收器繁忙 (当 Usart 收到时)<br>从 Irda 解码器解码的数据), 从 Usart 到 Irda 的 Tx 数据不是<br>编码。在接收数据时,应避免传输,因为要传输<br>传输可能已损坏。<br>• 0 以高脉冲方式传输,1 以 0 方式传输。脉冲的宽度<br>在正常模式下指定为所选位周期的 3/16(参见图 341)。<br>• SIR 解码器将符合 IrDA 的接收信号转换为位流,用于<br>美国<br>• SIR 接收逻辑将高状态解释为逻辑,低脉冲解释为逻辑<br>零。<br>• 传输编码器输出与解码器输入的极性相反。先生<br>空闲时输出处于低状态。<br>• IrDA 规范要求接受大于 1.41 μs 的脉冲。的<br>可接受的脉冲宽度是可编程的。接收器端的毛刺检测逻辑<br>过滤出宽度小于 2 PSC 周期的脉冲(PSC 是预缩放器值<br>在USART_GTPR) 中编程。宽度小于 1 PSC 周期的脉冲始终<br>拒绝,但宽度大于一和小于两个句点可能<br>接受或拒绝,超过2个周期将被接受为脉冲。的<br>当 PSC=0 时,IrDA 编码器/解码器不起作用。<br>• 接收器可与低功耗发射器通信。<br>• 在 IrDA 模式下,必须将存储器中的 USART_CR2 位配置为"1 个停止<br>位"。
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结果 (简体中文) 3:[复制]
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The IrDA SIR physical layer specifies use of a Return to Zero, Inverted (RZI) modulationscheme that represents logic 0 as an infrared light pulse (see Figure 340).The SIR Transmit encoder modulates the Non Return to Zero (NRZ) transmit bit streamoutput from USART. The output pulse stream is transmitted to an external output driver andinfrared LED. USART supports only bit rates up to 115.2 Kbps for the SIR ENDEC. Innormal mode the transmitted pulse width is specified as 3/16 of a bit period.The SIR receive decoder demodulates the return-to-zero bit stream from the infrareddetector and outputs the received NRZ serial bit stream to the USART. The decoder input isnormally high (marking state) in the Idle state. The transmit encoder output has the oppositepolarity to the decoder input. A start bit is detected when the decoder input is low.• IrDA is a half duplex communication protocol. If the Transmitter is busy (when theUSART is sending data to the IrDA encoder), any data on the IrDA receive line isignored by the IrDA decoder and if the Receiver is busy (when the USART is receivingdecoded data from the IrDA decoder), data on the TX from the USART to IrDA is notencoded. while receiving data, transmission should be avoided as the data to betransmitted could be corrupted.• A 0 is transmitted as a high pulse and a 1 is transmitted as a 0. The width of the pulseis specified as 3/16th of the selected bit period in normal mode (see Figure 341).• The SIR decoder converts the IrDA compliant receive signal into a bit stream forUSART.• The SIR receive logic interprets a high state as a logic one and low pulses as logiczeros.• The transmit encoder output has the opposite polarity to the decoder input. The SIRoutput is in low state when Idle.• The IrDA specification requires the acceptance of pulses greater than 1.41 μs. Theacceptable pulse width is programmable. Glitch detection logic on the receiver endfilters out pulses of width less than 2 PSC periods (PSC is the prescaler valueprogrammed in the USART_GTPR). Pulses of width less than 1 PSC period are alwaysrejected, but those of width greater than one and less than two periods may beaccepted or rejected, those greater than 2 periods will be accepted as a pulse. TheIrDA encoder/decoder doesn’t work when PSC=0.• The receiver can communicate with a low-power transmitter.• In IrDA mode, the STOP bits in the USART_CR2 register must be configured to “1 stopbit”.<br>
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