CN204206157U

CN204206157U - Transformational structure between lpc bus and LBE bus

Info

Publication number: CN204206157U
Application number: CN201420700243.1U
Authority: CN
Inventors: 刘海玲; 张凯; 宁立革
Original assignee: Tianjin Embedtec Co Ltd
Current assignee: Tianjin Embedtec Co Ltd
Priority date: 2014-11-20
Filing date: 2014-11-20
Publication date: 2015-03-11
Anticipated expiration: 2024-11-20

Abstract

Transformational structure between a kind of lpc bus and LBE bus, comprise: lpc bus interface, programmable logic device, level conversion device and LBE bus interface, lpc bus interface is connected with programmable logic device, programmable logic device is connected with level conversion device, and level conversion device is connected with LBE bus interface.The self-defining lpc bus equipment of lpc bus interface access user in the utility model, lpc bus protocol conversion is become LBE bus protocol by programmable logic device, level conversion is the level magnitude of LBE bus by level conversion device, LEB bus interface access LEB bus apparatus, the utility model has that integrated level is high, flexible in programming is convenient, workable, the features such as this implementation method also has flexible in programming, and transplantability is strong and easy to operate.

Description

Transformational structure between lpc bus and LBE bus

Technical field

The utility model relates to the technical field of Industry Control, is the transformational structure between a kind of lpc bus and LBE bus specifically.

Background technology

Early stage LBE bus is all generally that pci bus or local bus convert, but due to the development along with computer technology, on circuit board, high speed signal gets more and more, use the cabling of pci bus or local bus conversion LBE bus too many, the number of plies of circuit board can be increased, or affect the signal quality of high-speed bus.And lpc bus is as the simplification version of pci bus, its agreement or pci bus agreement, nowadays increasing processor is along with the no longer integrated pci bus of development of technology, and due to specific demand, LBE bus in some occasion also in a large amount of use, therefore, equipment lpc bus being converted to LBE bus is necessary.

Utility model content

The technical problems to be solved in the utility model is to provide the transformational structure between a kind of lpc bus and LBE bus.

The technical scheme that the utility model is taked for the technical problem existed in solution prior art is:

Transformational structure between lpc bus of the present utility model and LBE bus, comprise: lpc bus interface, programmable logic device, level conversion device and LBE bus interface, lpc bus interface is connected with programmable logic device, programmable logic device is connected with level conversion device, and level conversion device is connected with LBE bus interface

The advantage that the utility model has and good effect are:

In transformational structure between lpc bus of the present utility model and LBE bus, the self-defining lpc bus equipment of lpc bus interface access user, lpc bus protocol conversion is become LBE bus protocol by programmable logic device, level conversion is the level magnitude of LBE bus by level conversion device, LEB bus interface access LEB bus apparatus, the utility model has that integrated level is high, flexible in programming is convenient, workable, the features such as this implementation method also has flexible in programming, and transplantability is strong and easy to operate.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the transformational structure between lpc bus of the present utility model and LBE bus.

Embodiment

Referring to drawings and Examples, the utility model is described in detail.

As shown in Figure 1, the implementation method (see Fig. 1) of lpc bus conversion LBE bus, is characterized in that this implementation method comprises lpc bus interface 1, programmable logic device 2, level conversion device 3, LBE bus interface 4; Described lpc bus interface 1 is connected with programmable logic device 2, and described programmable logic device 2 is connected with level conversion device 3, and described level conversion device 3 is connected with LBE bus interface 4.

Lpc bus interface 1 is for the self-defining LPC defining interface of access user, and lpc bus interface is for transmitting rate control command instruction and being uploaded the data of LBE bus by lpc bus.

Programmable logic device 2 for connecting lpc bus and level conversion device, and completes lpc bus protocol conversion and becomes LBE bus protocol.

Level conversion device 3, for connection standard LBE bus interface, meets the level magnitude of standard LBE bus and the reading and writing data direction controlling of LBE bus.

Lpc bus is the 33 MHz 4 bit parallel bus protocol based on Intel standard, and LBE bus protocol is 32 buses, and LBE bus packet is containing system signal district, subscriber signal district, test signal district.

LBE bus is divided into memory to access and I/O access in access mode, and the figure place supported respectively is 8,16 and 32 read-writes, and wherein memory addressing space size is 8M, I/O addressing space size is 1K.

Lpc bus translates address wire required for LBE bus and data wire by programmable logic device 2, and other signals required for LBE bus, wherein BS16 signal is memory access or I/O access for distinguishing LBE bus, translate corresponding memory space size and input/output space size and its corresponding address space simultaneously, and be mapped to lpc bus.

Level conversion device 3 is for the 5V level that is LBE bus the 3.3V level conversion of programmable logic device 2, and the read-write direction of control LBE bus data.

LBE bus interface 4 is for the LBE bus interface equipment of access market standard.

Operation principle of the present utility model and process are: first lpc bus receives order or the data of other device transmission, carry out logic decoding in the programmable logic device, convert the LBE bus protocol of standard to, timing requirements meets LBE bus timing completely, then LBE bus level is converted to by level conversion device, and the transmission direction of control LBE bus data; Same principle, LBE bus receives the data from standard LBE bus apparatus, through level conversion device, convert the level magnitude that programmable logic device can receive to, through programmable logic device, be decoded into lpc bus agreement, be transferred in user-defined lpc bus equipment.

The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model with preferred embodiment openly as above, but, and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, certainly the technology contents of announcement can be utilized to make a little change or modification, become the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.

Claims

1. the transformational structure between a lpc bus and LBE bus, it is characterized in that, comprise: lpc bus interface, programmable logic device, level conversion device and LBE bus interface, lpc bus interface is connected with programmable logic device, programmable logic device is connected with level conversion device, and level conversion device is connected with LBE bus interface.