The Design And Implementation Of Contactless Interface Control Module CIUC

Non-contact IC card is to use the RF technology to realize the information transmission,and through the information of transferred to achieve the purpose of identification.This thesis introduces a CIUC interface module,When the contactless IC card and coupling device communications,it is the key link of responsible for data processing,it's between radio frequency interface and the CPU.First,the thesis simply introduces the Non-contact IC card protocol standard,the design and implementation of CIUC module is on the basis of this protocol standard.HSC1203 security chip adopted type A signal interface in the protocol standard,it makes communication become more united.The contactless interface unit controller ciuc in HSC1203 security chip,it's between the CPU and RF interface,used for processing and transfer data between the CPU and AFE.The function of the module is to deal with the data and the corresponding control,including when multiple cards appears in the frequency range of coupling device,use the anti-cconflict prevention mechanisms to solve the conflicts problem.;Control whether to send and receive data;,Can be set up four different frequency of data transceiver:106kb/s,212kb/s,424kb/s,848kb/s;Receives the data length can be read;Receive data state judgment and parity check on it,as well as the corresponding interrupt handing and others settings.Through these feature set,to ensure the information is more secure,accurate,orderly communication.After the design is completed,to simulation the function of ciuc module.To the function of register to read and write,the function of send and recive data,the function of parity,the function of sending data communication rate controlled,the function of status register interrupt request for validatation and send delay function and counter clock divider function.Through the data sending and receiving of several groups of instructions,the simulation got the expected results,verify the each function correctly.Finally,introduces the FPGA verification,to verify the accurate of design language and the realization of the function of design.In this thesis,the purpose of the CIUC module is to deal with the transmission data betwee the RF interface and the CPU.Therefore,this thesis will strengthen the function of the module from two aspects: the fd_clk and the fdt_delay dual-frequency divider are used to get the four transmission frequencies,Not only simplifies the frequency division process,but also can improve the speed;only send data interrupt function to determine whether to start sending data more error-prone,so increase the control to send data delay,delay size can be set according to the actual application,Avoid errors and ensure that data is sent correctly.