General digital verification platform for non-contact intelligent card

Abstract

The invention discloses a general digital verification platform for a non-contact intelligent card, comprising a personal computer (PC), a micro controller unit (MCU), a hardware sending circuit, a hardware receiving circuit and a memorizer. The PC completes coding and decoding which are related to a communication protocol, converts data signals to be sent into a series of bit streams and controls the MCU to perform different operations; the MCU writes the data signals sent by the PC in the memorizer, reads out the data stored in the memorizer and sends the read data to the PC; the hardware sending circuit reads the data in the memorizer and generates a stimulus signal to be inputted to a device under test (DUT) according to a predefined rule; and the hardware receiving circuit samples the data returned by the DUT and writes the sampled data in the memorizer. The platform can send the stimulus signals satisfying multiple communication protocols and simulate interference signals on high precision, thereby more truly verifying logic function of the non-contact intelligent card.

Description

technical field [0001] The invention relates to the field of integrated circuit chip testing, in particular to a common digital verification platform for non-contact smart cards. Background technique [0002] With the continuous promotion of smart card technology, contactless smart cards are widely used in various fields because of their convenience, safety and other advantages. At the same time, in order to better adapt to different application requirements in various fields, higher requirements are put forward for the speed and anti-interference performance of contactless smart cards. [0003] As an effective means of verification before tape-out of contactless smart card chips, prototype verification has become an important part of the chip design verification process. Most of the existing contactless smart card chip prototype verification methods are as follows: figure 1 As shown, the PC (personal computer, personal computer) sends instructions to the MCU (Micro Contro...

AI Technical Summary

Problems solved by technology

In this way, different dedicated card readers need to be used to match contactless smart cards using different communication protocols; and due to the continuous increase in applications, some new communication protocols will also be produced. The verification platform for contactless smart cards It will also need to be replaced, which will continuously increase the cost of test verification

[0006] In addition, because the demodulated signal of the analog circuit of the contactless smart card may produce some offset or jitter in different application environments, and the excitation signal sent by the special card reader is generally a standard signal, so it cannot be used in the prototype. In the machine verification stage, some signal jitter and offset verifications are carried out as needed, so that the final successful tape-out and application of the contactless smart card chip has certain risks.

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