The invention discloses an ASIC (application-specific
integrated circuit)
chip applicable to low-
voltage power line carrier communication. The ASIC
chip comprises a
power management module, an input / output state selection module, a
frequency selection module, a three-way switching module, a
linear amplification module, a filter module, a
demodulation module, a
frequency stabilization module, a power amplification module and a
signal intensity detection module. The
chip receives an FSK (
frequency shift keying)
spread spectrum modulation
carrier signal transmitted by a
peripheral circuit, and after the FSK
spread spectrum modulation
carrier signal is subjected to
demodulation processing, the equivalent intensity values of a
demodulation code element
signal and an input
signal are output to a MCU (master
control unit); the chip receives an FSK
spread spectrum modulation
digital signal transmitted by the MCU, and after the FSK
spread spectrum modulation digital signal is subjected to filtering
processing, an FSK
spread spectrum modulation analog signal is output to the
peripheral circuit; and power supply of the chip can be controlled by the MCU. By using the ASIC chip disclosed by the invention, the board-
level design of a
system is reduced, the complexity and cost of
system design are reduced, and the performance of low-
voltage power line carrier communication can be effectively improved, thereby enhancing the application prospect of the low-
voltage power line carrier communication technology.