Utilizing Renesas’ third generation of market-leading power line communication (PLC) modem solutions, this winning combination illustrates how PLC can be used effectively to transmit/receive voice communication over low-voltage power distribution lines. The microphone and speaker are controlled by an RX65x MCU, which in turn communicates to the CPX3 modem SoC. The ISL8117 is used to convert an unregulated rectified input voltage to produce a 12V bus required for the line driver. The ISL85415 converts 12V to 3.3V to power the RX65x MCU and the CPX3 modem SoC. An ISL9008 LDO is utilized to create a very low noise power rail for the codec. The ISL28430 is a quad op-amp that is used for microphone amplification and output level indication.

System Benefits:

  • Can be used for any PLC protocol standard, such as PRIME 1.3.6/1.4 and G3
  • Low-power design delivers high efficiency in a small space
  • RX651/65N family of MCUs operate up to 120MHz with low power and up to 2MB of on-chip flash and 640KB of RAM



Winning Combinations Interactive Diagram

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4:3 ratio Sheet.1 Sheet.2 Sheet.3 Sheet.4 US013 US013 US013 DC/DC 1 DC/DC DC/DC Ground (earth) Sheet.25 Sheet.26 Sheet.27 Sheet.28 Speaker speaker_8_ Sheet.31 Sheet.32 Sheet.33 Sheet.34 Microphone Sheet.36 Sheet.37 Ground (earth).38 Sheet.39 Sheet.40 Sheet.41 Sheet.42 Inductor Coreless (Air conductor) Sheet.45 Sheet.46 Sheet.47 Sheet.48 Sheet.49 Sheet.50 Sheet.51 Sheet.52 Sheet.53 Capacitor Non-polarized Sheet.72 Sheet.73 Sheet.74 Sheet.75 Diode LED Red Sheet.86 Sheet.87 Sheet.88 Sheet.89 Darlington.651 Sheet.91 Darlington.254 Sheet.93 Sheet.94 Diode LED Green Sheet.96 Sheet.97 Sheet.98 Sheet.99 Darlington.651 Sheet.101 Darlington.254 Sheet.103 Sheet.104 Ground (earth).132 Sheet.133 Sheet.134 Sheet.135 Sheet.136 Ground (earth).137 Sheet.138 Sheet.139 Sheet.140 Sheet.141 Ground (earth).142 Sheet.143 Sheet.144 Sheet.145 Sheet.146 Sheet.149 Sheet.150 Microphone Gain Microphone Gain Microphone Gain U1A U1A U1A U1B U1B U1B Microphone Microphone Microphone Sheet.156 Sheet.164 Sheet.165 3.3VDC 3.3VDC 3.3VDC Sheet.167 Sheet.168 Sheet.169 DC/DC 2 DC/DC DC/DC Sheet.171 Connector 1.169 Connector 1.169.173 Sheet.174 Sheet.175 Sheet.176 Sheet.180 Sheet.181 Sheet.182 Sheet.183 Sheet.184 Connector 1.169.185 Sheet.186 Sheet.187 Sheet.188 Sheet.189 Sheet.191 Connector 1.192 Sheet.193 Capacitor Non-polarized .196 Sheet.197 Sheet.198 Sheet.199 Sheet.200 Sheet.201 Connector 1.202 Sheet.203 Sheet.204 Sheet.205 3.3V A 3.3V A 3.3V A 3.3VDC 3.3VDC 3.3VDC C2 C2 C2 C1 C1 C1 1.8VDC LDO 1.8VDC LDO 1.8VDC LDO 1.8VDC 1.8VDC 1.8VDC 3.3V A 3.3V A 3.3V A Sheet.213 Sheet.214 Sheet.215 Sheet.216 Analog Power Analog Power Analog Power Resistor - Fixed.219 Sheet.221 Resistor - Fixed Resistor - Fixed.218 Sheet.220 Sheet.222 Sheet.223 Sheet.224 Sheet.225 Sheet.226 3.3V A 3.3V A 3.3V A Sheet.228 Connector 1.169.229 Sheet.230 Sheet.231 Connector 1.169.232 Sheet.233 Connector 1.234 Sheet.235 Resistor - Fixed Resistor - Fixed.218 Sheet.238 Sheet.239 Sheet.241 Sheet.242 Sheet.243 Sheet.244 Sheet.245 Speaker Speaker Speaker U1C U1C U1C U1D U1D U1D OUTPUT Level Indicator OUTPUT Level Indicator OUTPUT Level Indicator Sheet.250 Sheet.253 Resistor - Fixed.255 Sheet.256 GREEN GREEN GREEN RED RED RED Sheet.260 Sheet.266 GPIO GPIO GPIO GPIO (BOOT Mode) GPIO (BOOT Mode) GPIO (BOOT Mode) IRQ# IRQ# IRQ# RESET# (GPIO) RESET# (GPIO) RESET# (GPIO) RXD RXD RXD TXD TXD TXD Sheet.273 Sheet.274 Sheet.275 Sheet.276 Sheet.277 Sheet.278 Connector 1.169.279 Sheet.280 Sheet.281 Line Interface Line Interface Line Interface Sheet.283 Sheet.284 Sheet.285 PMOD Debug UART PMOD Debug UART PMOD Debug UART Sheet.287 Serial FLASH Serial FLASH Serial FLASH Sheet.289 Sheet.290 Sheet.291 Sheet.292 Sheet.294 Sheet.295 Sheet.296 Sheet.297 Sheet.298 DC Bus DC Bus DC Bus Non-Renesas Component.300 Sheet.301 Sheet.302 Sheet.303 Sheet.304 Connector 1.169.305 Connector 1.169.306 Sheet.307 Sheet.308 Sheet.309 Sheet.310 DC Bus DC Bus DC Bus Non-Renesas Component.312 Sheet.313 Sheet.314 Connector 1.315 Connector 1.316 Sheet.317 Bridge Rectifier Bridge Rectifier Bridge Rectifier Sheet.319 Sheet.320 Sheet.321 12VDC 12VDC 12VDC Sheet.323 Sheet.324 Sheet.327 Sheet.328 Sheet.329 13-48VDC 13-48VDC 13-48VDC 12S CODEC Amplifier 12S CODEC Amplifier 12S CODEC Amplifier Op Amp1 Op Amp Op Amp Op Amp2 Op Amp Op Amp MCU MCU MCU MCU ADC ADC ADC SCI SCI SCI I2C I2C I2C SCI SCI SCI CPX3 CPX3 CPX3 CPX3 RXD RXD RXD TXD TXD TXD SPI SPI SPI SCI SCI SCI FET Driver Line Driver x2 Line Driver x2 Op Amp3 Op Amp Op Amp Op Amp4 Op Amp Op Amp
Exiting Interactive Block Diagram