CN103473189A

CN103473189A - Single-chip SOC (System-on-Chip) for realizing non-contact type smart card reader

Info

Publication number: CN103473189A
Application number: CN2012101837599A
Authority: CN
Inventors: 王亮
Original assignee: Shanghai Huahong Integrated Circuit Co Ltd
Current assignee: Shanghai Huahong Integrated Circuit Co Ltd
Priority date: 2012-06-06
Filing date: 2012-06-06
Publication date: 2013-12-25

Abstract

The invention discloses a single-chip SOC (System-on-Chip) for realizing a non-contact type smart card reader. The single-chip SOC comprises a CU (Control Unit) and an IU (Interface Unit) which are embedded in the single-chip SOC, wherein the CU is in communication with a PC (Personal Computer) host side through a universal serial port and is used for controlling the IU; the IU is in communication with an IC (Integrated Circuit) card through an RF (Radio Frequency) antenna and is used for carrying out protocol analysis and feeding back information to the CU; and communication of the CU and the IU is realized through an internal bus. According to the single-chip SOC disclosed by the invention, the cost is obviously reduced, the benefit is increased, and the area of a circuit board is saved.

Description

For realizing the single-chip SOC of contact type intelligent card card reader

Technical field

The present invention relates to the smart card reader field, particularly relate to a kind of for realizing the single-chip SOC(SOC (system on a chip) of contact type intelligent card card reader).

Background technology

From terminal company → OEM(foundry production) and the ODM(Original Design Manufacturer) manufacturer → chip supplier, all dealers of smart card value chain are making great efforts to improve the Function Integration Mechanism degree, and it is that smart card reduces costs and save the important key link of board area to other function.

Summary of the invention

The technical problem to be solved in the present invention is to provide and a kind ofly can significantly reduces costs for realizing the single-chip SOC of contact type intelligent card card reader, increases benefit, saves the area of circuit board.

For solving the problems of the technologies described above, of the present invention for realizing the single-chip SOC of contact type intelligent card card reader, comprising: be embedded in the CU(control module in described single-chip SOC) and the IU(interface unit); Described CU is by universal serial port and PC(PC) host side communicates, and described IU controlled; Described IU is by radio-frequency antenna and IC(integrated circuit) stick into Serial Communication, protocol analysis and information is fed back to described CU; Described CU realizes communicating by letter by internal bus with IU.

The present invention embedded control module CU and support the interface unit IU of ISO14443 A/B agreement fully in single-chip SOC, replaced two chips schemes of current employing.Hardware and software is provided by the scheme business fully, realizes that the Turn-Key(of smart card industry hands over key) pattern.Single-chip SOC scheme of the present invention can be for the client in component purchase, the wiring of PCB Layout(PCB drawing board), hardware circuit design, software debugging, the stock controls, and the aspects such as cost accounting provide convenient; Can significantly reduce manufacturing cost, increase the benefit of manufacturer, save the area of circuit board.

The accompanying drawing explanation

Below in conjunction with accompanying drawing and embodiment, the present invention is further detailed explanation:

Accompanying drawing is described for realizing the single-chip SOC structured flowchart of contact type intelligent card card reader.

Embodiment

Shown in accompanying drawing, describedly for the single-chip SOC that realizes the contact type intelligent card card reader, comprise: be embedded in CU16 and the IU17 of described single-chip SOC 18, single-chip SOC 18 be a chips simultaneously integrated CU 16 and IU 17.

Described CU 16 communicates by universal serial port 6 and PC main frame 5 ends, and described IU 17 is controlled; Described IU 17 by radio-frequency antenna 12 and IC-card 14 communicate, protocol analysis information is fed back to described CU 16.Described CU 16 realizes communicating by letter by internal bus 11 with IU 17.

Described CU 16 comprises: 80C51 kernel 8, UART(USB (universal serial bus)) the inner phaselocked loop of module 7, PLL() 9 and the PMU(power-supply management system) 10.Described 80C51 kernel 8, be mainly used in coordinate controlling the inner modules of single-chip SOC, and with the communicating by letter of PC main frame 5.Described UART module 7 is the communication bridge with PC main frame 5 as 80C51 kernel 8.PMU 10 is used to whole single-chip SOC internal module that its required power supply is provided.

Outside OSC(crystal oscillator) 3 inside of the PLL(by I/O interface 4 and described CU 16 phaselocked loops) 9 are connected.Outside OSC 3 is used to single-chip SOC that clock is provided, and PLL 9 is under the control of described 80C51 kernel 8, and the clock that outside OSC 3 is provided is generated as the various clocks of single-chip SOC internal module need of work.

Power supply 1 provides power supply for described single-chip SOC 18.Described power supply 1, external OSC 3 and peripheral circuit 2(peripheral circuit comprise resistance, electric capacity, inductance, the basic components and parts such as triode) composition minimum system (realizing described single-chip SOC the most basic necessary components and parts).

Described IU 17 is for supporting the interface module of ISO14443 A/B agreement fully.

Test board 15, for investigation chip defect and fault when single-chip SOC designs, is connected with IU 17 by interface 13.This interface 13 can adopt serial line interface.

Upstream:

After the UART module 7 of PC main frame 5 by universal serial port 6 and CU 16 communicates, by this UART module 7, data are similar to the CS/WR/RD/ADDR/DATA of cpu i/f by internal bus 11() send to the 80C51 kernel 8 of CU 16; 8 pairs of data of this 80C51 kernel are carried out analyzing and processing, resolve the various instructions of PC main frame 5, then send to IU 17 by internal bus 11, and IU 17 carries out the encapsulation of ISO14443 agreement, finally by radio-frequency antenna 12, sends to IC-card 14.

Downstream data flow:

IC-card 14 sends data to the IU 17 of single-chip SOC 18 by radio-frequency antenna 12, IU 17 carries out after the ISO14443 agreement unpacks, return to the 80C51 kernel 8 of CU 16 by

internal bus

11,8 pairs of data of 80C51 kernel send to UART module 7 by internal bus 11 after being processed, then by universal serial port 6, data are returned to PC main frame 5 by UART module 7.

Different from traditional card reader, CU 16 and IU 17 are become one, and the module in IU 17 must need fully, therefore, while designing, need only increase and decrease as required or merge the module in CU 16.For example can be by the block merging of the two repetition during design chips, such as: RAM/ROM/TIMER(random access memory/ROM (read-only memory)/timer)/PMU(power management module)/CLK(clock module) etc., in addition can by traditional MCU on smart card reader unwanted module remove, such as the SPI(Serial Peripheral Interface)/part PORT(port) etc.

The smart card reader Major Systems is integrated into to single-chip be can be card reader manufacturer and brings very big benefit.Traditional card reader needs two chips to form: the MCU(micro-control unit) and READER(card reader chip), and the single-chip card reader can be by the interior a plurality of important subsystem of single-die integrated circuit replacement card reader.Because the traffic between these subsystems is very huge, single chip design may can also be saved originally required many discrete components and passive element, and the simplest single-chip card reader solution only needs tens components and parts just can realize complete function according to estimates.Considerable components and parts, production, plug-in unit, buying and inventory cost will be saved by this expression card reader manufacturer.A large amount of minimizings of stock's components and parts number and kind not only allow the supply chain running more smooth and easy, can also significantly reduce the production line downtime risk that the components and parts shortage causes.In addition, the single-chip card reader can also be exempted the components and parts winding operation, makes circuit board be reduced to six laminates or four laminates from traditional eight laminates, and the circuit board fabrication cost can be saved three one-tenth the most at most to fifty percent.In addition, because many circuit functions all are incorporated into a chips, the semiconductor supplier can carry out more complete test and assurance for the system specification, and its scope far surpasses many components and parts of supply separately.For card reader, this can shorten the factory testing time, improves testing efficiency and reduce the returned work rate.Profit-push is that all card reader are manufactured one of the significant challenge that will face commercial city, the pressure maximum of wherein bearing with ODM manufacturer again.As long as the single-chip card reader allows the product yield of card reader manufacturer improve 1%, just mean their the highest can increasing much of profit.

Another advantage of real single-chip solution is that manufacturer only need purchase a device, rather than the chipset consisted of many components and parts.If manufacturer adopts chipset or needs some what is called " single-chip solution " of another Power Management Devices, as long as chipset has any components and parts short supply, the card reader production line will stop so.Unfortunately, market environment with keen competition forces manufacturer must strictly control the stock, so the components and parts short supply may occur in the smart card industry.

Along with the required components and parts of circuit board significantly reduce, all subsystems all are integrated into again a chips, and the required hardware and software adjustment work of system optimization process will become simpler.The single-chip card reader also should be integrated all system frequency functions, and it is made and only needs collocation one coccolith English crystal.In addition, because the single-chip card reader is integrated into a chips by repertoire, the designer can also be by polynomial system usefulness pointer optimization, as long as all subsystems are integrated into single chips, the effects such as temperature and semiconductor technology variation can obtain compensation.Finally, because all functions module that needs transinformation all closely is integrated into same chips, system sequence also can optimization to provide most effective total system power consumption to control.

Embedded Industry all knows that the key reduced costs is to see through single-chip Function Integration Mechanism is performed to the limit, and a chips does not affect usefulness, so just can allow Function Integration Mechanism bring into play greatest benefit.The best illustration that single-chip is integrated is exactly mobile phone industry, analysis institution according to a semicon industry of ABIResearch() up-to-date prediction, 2009, single-chip mobile phone baseband processor chip set only accounts for 19% of total fundamental frequency processor shipment amount, but this ratio will rise to 47% in 2015, annual compound growth rate is 21%.Also have analogue for the individual chips group that connects processor, although the chip that constantly is combined is captured market, in 2015, its ratio still accounted for 59% of total shipment amount.Comprise high pass, TI, spreadtrum, MTK, Broadcom etc. renowned company is all marching to integral chip.

Abovely by embodiment, the present invention is had been described in detail, but these not are construed as limiting the invention.Without departing from the principles of the present invention, those skilled in the art also can make many distortion and improvement, and these also should be considered as protection scope of the present invention.

Claims

1. one kind for realizing the single-chip SOC (system on a chip) SOC of contact type intelligent card card reader, it is characterized in that, comprising: be embedded in control module CU and interface unit IU in described single-chip SOC (system on a chip) SOC; Described control module CU communicates by universal serial port and PC host side, and described interface unit IU is controlled; Described interface unit IU sticks into Serial Communication, protocol analysis and information is fed back to described control module CU by radio-frequency antenna and integrated circuit (IC); Described control module CU realizes communicating by letter by internal bus with interface unit IU.

2. single-chip SOC (system on a chip) SOC as claimed in claim 1, it is characterized in that: described control module CU comprises: 80C51 kernel, USB (universal serial bus) UART module, inner phase-locked loop pll and power-supply management system PMU; Described 80C51 kernel is for coordinating to control the inner modules of single-chip SOC (system on a chip) SOC, and with the communicating by letter of PC main frame; Described USB (universal serial bus) UART module is communicated by letter for 80C51 kernel and PC main frame; Described power-supply management system PMU is used to single-chip SOC (system on a chip) SOC internal module that its required power supply is provided.

3. single-chip SOC (system on a chip) SOC as claimed in claim 2, it is characterized in that: described PC main frame sends to 80C51 kernel by data by internal bus by this USB (universal serial bus) UART module after communicating by universal serial port and USB (universal serial bus) UART module; This 80C51 kernel carries out analyzing and processing to data, resolves the various instructions of PC main frame, then sends to interface unit IU by internal bus, and this interface unit IU carries out the encapsulation of ISO14443 agreement, finally by radio-frequency antenna, sends to the integrated circuit IC-card;

Described integrated circuit (IC) cartoon is crossed radio-frequency antenna and is sent data to interface unit IU, this interface unit IU carries out after the ISO14443 agreement unpacks, return to the 80C51 kernel by internal bus, this 80C51 kernel sends to USB (universal serial bus) UART module by internal bus after data are processed, then by universal serial port, data is returned to the PC main frame by USB (universal serial bus) UART module.

4. single-chip SOC (system on a chip) SOC as claimed in claim 1 is characterized in that: described interface unit IU is for supporting the interface module of ISO14443A/B agreement fully.