CN103414521A

CN103414521A - Optical fiber data card based on PCI-EXPRESS interface power supply

Info

Publication number: CN103414521A
Application number: CN2013103835179A
Authority: CN
Inventors: 胡钢; 邱昆
Original assignee: CHENGDU CHENGDIAN GUANGXIN TECHNOLOGY Co Ltd
Current assignee: CHENGDU CHENGDIAN GUANGXIN TECHNOLOGY Co Ltd
Priority date: 2013-08-29
Filing date: 2013-08-29
Publication date: 2013-11-27

Abstract

The invention discloses an optical fiber data card based on PCI-EXPRESS interface power supply. The optical fiber data card comprises an FPGA and a central processing unit connected to the FPGA. A clock chip is connected to the central processing unit. An optical transceiver module and a memory are connected to the FPGA. A power management module is also connected to the FPGA. The power management module comprises a first-level power management chip and multiple second-level power management chips connected to the first-level power management chip. The second-level power management chips are connected to the FPGA through PCI-EXPRESS interfaces. The optical fiber data card based on PCI-EXPRESS interface power supply has the advantages that the PCI-EXPRESS interfaces are used for supplying power to all the modules in the FPGA independently, therefore, mutual influence between all the modules is avoided, and the performance of the optical fiber data card is made to be optimal.

Description

Fiber data card based on the power supply of PCI-EXPRESS interface

Technical field

The present invention relates to a kind of fiber data card, relate in particular a kind of fiber data card based on the power supply of PCI-EXPRESS interface.

Background technology

Due to optical fiber communication have capacity large, transmit that information quality is high, the advantage such as long transmission distance, stable performance, anti-electromagnetism, resistance to corrosion are strong.And optical-fibre channel is a kind of high performance serial transmission protocol, have the characteristics of high broadband, high real-time, become the preferred option of advanced synthesis electronic system of new generation network interconnection.The optical-fibre communications data interface card, as the interface of electronic system and network, is the key component that forms electric network, and its research has become important and urgent task.The charger of optical fiber board generally adopts the mode of one-level power supply, and namely the 12V power supply directly is the FPGA power supply by power management chip, and still, due to the mode that adopts unified power supply, it exerts an influence each other sometimes.

Summary of the invention

The invention provides a kind of fiber data card based on the power supply of PCI-EXPRESS interface, it adopts the PCI-EXPRESS interface separately for each module for power supply in FPGA, avoids influencing each other between each module, makes the performance of fiber data card reach optimum.

For solving above-mentioned technical problem, the present invention by the following technical solutions:

Fiber data card based on the power supply of PCI-EXPRESS interface, it comprises FPGA and is connected to the central processing unit on FPGA, on described central processing unit, be connected with clock chip, on described FPGA, be connected with optical transceiver module and memory, on described FPGA, be connected with power management module, described power management module comprises one-level power management chip and be connected to a plurality of secondary power supply managing chips on the one-level power management chip, and described secondary power supply managing chip is connected on FPGA by the PCI-EXPRESS interface.

In the present invention, power management module adopts the two-stage management mode, be that the one-level power management chip carries out preliminary treatment to the 12V power supply provided, a plurality of secondary power supply managing chips are processed power supply respectively again, make power supply meet the power supply requirement of each module of FPGA, and physically individual module is isolated, avoid influencing each other between each module, make performance reach optimum.The operating state of central processing unit for managing FPGA, and memory is managed.Optical transceiver module provides optical fiber interface, realizes the conversion of light signal and the signal of telecommunication.

Further technical scheme is:

Described one-level power management chip is PTH12000W.

Described secondary power supply managing chip comprises PTH08T240W and two TPS75525.

Power management module adopts the two-stage management mode, and one-level power management chip PTH12000W carries out preliminary treatment to the 12V power supply provided, and makes it be converted to 5.0V; Secondary power supply managing chip PTH08T240W and two TPS75525 distribute and are connected on the pin of a module in FPGA by the PCI-EXPRESS interface, and TPS75525 is converted into 1.0V by the 5.0V power supply; Two TPS75525 connect respectively FPGA its 5.0V power supply is converted into to 2.5V.Key modules in FPGA adopts the mode of power supply separately, by they isolation, can guarantee that so namely modules has enough power physically, can guarantee again can not interfere with each other between them, to arrive optimum performance.

Described clock chip comprises the first reference clock chip and the second reference clock chip.Adopt a plurality of clock chips, can effectively improve the clock stability of internal system.

Described memory comprises SRAM and FLASH.

Described central processing unit is CORTEX M3.CORTEX M3 is arm processor, and its high-performance, low-power consumption, low price can improve the overall performance of whole interface card.

Compared with prior art, the invention has the beneficial effects as follows:

1, employing PCI-EXPRESS interface of the present invention is separately each module for power supply in FPGA, avoids influencing each other between each module, makes the performance of fiber data card reach optimum.

2, the present invention adopts two clock circuits, i.e. the first reference clock chip and the second reference clock chip, and it can effectively improve the stability of interface card inside.

The accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

Fig. 1 is theory diagram of the present invention.

Embodiment

The present invention is further illustrated below in conjunction with accompanying drawing.Embodiments of the present invention include but not limited to the following example.

[embodiment]

The fiber data card based on the power supply of PCI-EXPRESS interface as shown in Figure 1, it comprises FPGA and is connected to the central processing unit on FPGA, on described central processing unit, be connected with clock chip, on described FPGA, be connected with optical transceiver module and memory, on described FPGA, be connected with power management module, described power management module comprises one-level power management chip and be connected to a plurality of secondary power supply managing chips on the one-level power management chip, and described secondary power supply managing chip is connected on FPGA by the PCI-EXPRESS interface.Optical transceiver module can adopt FTRJ-8519-1-2.5.

Described one-level power management chip is PTH12000W.

Described clock chip comprises the first reference clock chip and the second reference clock chip.The first reference clock chip and the second reference clock chip adopt respectively DS4106 and DS4212, and its phase jitter and phase noise are extremely low, effectively guarantee the superiority of the performance of interface card.

Described memory comprises SRAM and FLASH.SRAM is static random access memory; FLASH is flash memory.

Described central processing unit is CORTEX M3.

Be as mentioned above embodiments of the invention.The present invention is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.

Claims

1. the fiber data card of powering based on the PCI-EXPRESS interface, it is characterized in that: it comprises FPGA and is connected to the central processing unit on FPGA, on described central processing unit, be connected with clock chip, on described FPGA, be connected with optical transceiver module and memory, on described FPGA, be connected with power management module, described power management module comprises one-level power management chip and be connected to a plurality of secondary power supply managing chips on the one-level power management chip, and described secondary power supply managing chip is connected on FPGA by the PCI-EXPRESS interface.

2. the fiber data card based on PCI-EXPRESS interface power supply according to claim 1, it is characterized in that: described one-level power management chip is PTH12000W.

3. the fiber data card based on PCI-EXPRESS interface power supply according to claim 2, it is characterized in that: described secondary power supply managing chip comprises PTH08T240W and two TPS75525.

4. the fiber data card based on PCI-EXPRESS interface power supply according to claim 1, it is characterized in that: described clock chip comprises the first reference clock chip and the second reference clock chip.

5. the fiber data card based on PCI-EXPRESS interface power supply according to claim 1, it is characterized in that: described memory comprises SRAM and FLASH.

6. the fiber data card based on PCI-EXPRESS interface power supply according to claim 1, it is characterized in that: described central processing unit is CORTEX M3.