瑞萨电子 (Renesas Electronics Corporation)
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电力线语音通信

概览

该设计采用瑞萨电子市场领先的第三代电力线通信（PLC）调制解调器技术，通过低压电力线有效地传输语音。 麦克风和扬声器由 MCU 控制，MCU 与 CPX3/CPX4 调制解调器 IC 通信。 同步降压型降压控制器转换一个未稳压的整流输入电压，为线路驱动器产生一个 12V 总线。 此外，一个 500mA 同步降压稳压器将 12V 降至 3.3V，为 MCU 和调制解调器 IC 供电。 LDO 为编解码器生成噪声非常低的电源轨，而四通道运算放大器用于麦克风放大和输出电平指示。

系统优势：

  • 兼容任何 PLC 协议标准，例如 PRIME 1.3.6/1.4 和 G3
  • 低功耗设计确保在紧凑的空间内实现高效率
  • MCU 以低功耗运行频率高达 120MHz，具有高达 2MB 的片上闪存和 640KB 的 RAM

方框图

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远程测试该板卡

该板卡已上线云上实验室（Lab on the Cloud)，使用我们的 PC 图形界面，无需实体板卡，便可在虚拟实验室中立即开始配置和测试设计。
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4:3 ratioSheet.1Sheet.2Sheet.3Sheet.4US013US013US013DC/DC 1DC/DCDC/DCGround (earth)Sheet.25Sheet.26Sheet.27Sheet.28Speakerspeaker_8_Sheet.31Sheet.32Sheet.33Sheet.34MicrophoneSheet.36Sheet.37Ground (earth).38Sheet.39Sheet.40Sheet.41Sheet.42Inductor Coreless (Air conductor)Sheet.45Sheet.46Sheet.47Sheet.48Sheet.49Sheet.50Sheet.51Sheet.52Sheet.53Capacitor Non-polarizedSheet.72Sheet.73Sheet.74Sheet.75Diode LED RedSheet.86Sheet.87Sheet.88Sheet.89Darlington.651Sheet.91Darlington.254Sheet.93Sheet.94Diode LED GreenSheet.96Sheet.97Sheet.98Sheet.99Darlington.651Sheet.101Darlington.254Sheet.103Sheet.104Ground (earth).132Sheet.133Sheet.134Sheet.135Sheet.136Ground (earth).137Sheet.138Sheet.139Sheet.140Sheet.141Ground (earth).142Sheet.143Sheet.144Sheet.145Sheet.146Sheet.149Sheet.150Microphone GainMicrophone GainMicrophone GainU1AU1AU1AU1BU1BU1BMicrophoneMicrophoneMicrophoneSheet.156Sheet.164Sheet.165 3.3VDC3.3VDC3.3VDCSheet.167Sheet.168Sheet.169DC/DC 2DC/DCDC/DCSheet.171Connector 1.169Connector 1.169.173Sheet.174Sheet.175Sheet.176Sheet.180Sheet.181Sheet.182Sheet.183Sheet.184Connector 1.169.185Sheet.186Sheet.187Sheet.188Sheet.189Sheet.191Connector 1.192Sheet.193Capacitor Non-polarized .196Sheet.197Sheet.198Sheet.199Sheet.200Sheet.201Connector 1.202Sheet.203Sheet.204Sheet.205 3.3V A3.3V A3.3V A 3.3VDC3.3VDC3.3VDCC2C2C2C1C1C11.8VDC LDO1.8VDC LDO1.8VDC LDO1.8VDC1.8VDC1.8VDC3.3V A3.3V A3.3V ASheet.213Sheet.214Sheet.215Sheet.216Analog PowerAnalog PowerAnalog PowerResistor - Fixed.219Sheet.221Resistor - FixedResistor - Fixed.218Sheet.220Sheet.222Sheet.223Sheet.224Sheet.225Sheet.226 3.3V A3.3V A3.3V ASheet.228Connector 1.169.229Sheet.230Sheet.231Connector 1.169.232Sheet.233Connector 1.234Sheet.235Resistor - FixedResistor - Fixed.218Sheet.238Sheet.239Sheet.241Sheet.242Sheet.243Sheet.244Sheet.245SpeakerSpeakerSpeaker U1CU1CU1C U1DU1DU1DOUTPUT Level IndicatorOUTPUT Level IndicatorOUTPUT Level IndicatorSheet.250Sheet.253Resistor - Fixed.255Sheet.256GREENGREENGREENREDREDREDSheet.260Sheet.266GPIOGPIOGPIOGPIO (BOOT Mode)GPIO (BOOT Mode)GPIO (BOOT Mode)IRQ#IRQ#IRQ#RESET# (GPIO)RESET# (GPIO)RESET# (GPIO)RXDRXDRXDTXDTXDTXDSheet.273Sheet.274Sheet.275Sheet.276Sheet.277Sheet.278Connector 1.169.279Sheet.280Sheet.281Line InterfaceLine InterfaceLine InterfaceSheet.283Sheet.284Sheet.285Pmod Debug UARTPmod Debug UARTPmod Debug UARTSheet.287Serial FLASHSerial FLASHSerial FLASHSheet.289Sheet.290Sheet.291Sheet.292Sheet.294Sheet.295Sheet.296Sheet.297Sheet.298DC BusDC BusDC BusNon-Renesas Component.300Sheet.301Sheet.302Sheet.303Sheet.304Connector 1.169.305Connector 1.169.306Sheet.307Sheet.308Sheet.309Sheet.310 DC BusDC BusDC BusNon-Renesas Component.312Sheet.313Sheet.314Connector 1.315Connector 1.316Sheet.317Bridge RectifierBridge RectifierBridge RectifierSheet.319Sheet.320Sheet.32112VDC12VDC12VDCSheet.323Sheet.324Sheet.327Sheet.328Sheet.32913-48VDC13-48VDC13-48VDC12S CODEC Amplifier12S CODEC Amplifier12S CODEC AmplifierOp Amp1Op AmpOp AmpOp Amp2Op AmpOp AmpMCUMCUMCUMCUADCADCADC SCISCISCII2CI2CI2C SCISCISCICPX3CPX3/CPX4CPX3/CPX4CPX3/CPX4 RXDRXDRXD TXDTXDTXD SPISPISPI SCISCISCILine DriverLine Driver x2Line Driver x2Op Amp3Op AmpOp AmpOp Amp4Op AmpOp Amp

DC/DC

降压稳压器（集成开关）

DC/DC

降压控制器（外部 FET）

Op Amp

精密运算放大器 (Vos <1mV)

Op Amp

精密运算放大器 (Vos <1mV)

MCU

RX 系列 32 位高性能/高效能 MCU

CPX3/CPX4

PLC 调制解调器 IC

Op Amp

精密运算放大器 (Vos <1mV)

Op Amp

精密运算放大器 (Vos <1mV)

1.8VDC LDO

线性稳压器（LDO）

Line Driver

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