Four-channel optical fiber standard frequency module that can realize soft and hard cross switching based on Ethernet bus

Abstract

The invention provides an Ethernet bus-based four-channel optical fiber standard frequency module capable of realizing alternative soft and hard switching. The four-channel optical fiber standard frequency module comprises a power supply module, a power divider, four photoelectric conversion circuits, one PPC chip, one FPGA chip, four SRAM chips, two FLASH chips, two Ethernet interface chips, one RS232 interface chip, a radio frequency switch chip and two LVDS exchange chips, wherein the power supply module supplies power for the power divider, the photoelectric conversion circuits, the PPC chip, the FPGA chip, the SRAM chips, the FLASH chips, the Ethernet interface chips, the RS232 interface chip, the radio frequency switch chip and the LVDS exchange chips; and the FPGA chip, the SRAM chips, the FLASH chips, the Ethernet interface chips, the RS232 interface chip, the radio frequency switch chip and the LVDS exchange chips are connected with the PPC chip respectively. The four-channel optical fiber standard frequency module of the invention can realize the soft and hard switching of LVDS through using the FPGA chip or the PPC chip; and an Ethernet bus is adopted between the four-channel optical fiber standard frequency module and a main control module. The four-channel optical fiber standard frequency module is advantageous in high transmission speed, high reliability in communication and the like.

Description

technical field

[0001] The invention belongs to the field of electronic circuit design, and in particular relates to a four-channel optical fiber standard frequency module that can realize soft and hard cross switching based on the Ethernet bus. Background technique

[0002] Existing standard frequency modules generally only provide one radio frequency signal. To provide four standard frequency signals, four standard frequency modules are required. There are many modules and occupy a lot of space. At the same time, because the multi-band communication system needs to convert the digital intermediate frequency electrical signal into an optical signal and send it to the remote transmitter, the previous photoelectric conversion module only has the photoelectric conversion function of one channel, so four such photoelectric conversion modules are needed, and there are also a relatively large number of photoelectric conversion modules. many questions. Contents of the invention ...

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