Multiplex JTAG (Joint Test Action Group) interface-based FPGA (Field Programmable Gate Array) on-chip logic analyzer system and method
A logic analyzer and interface technology, which is applied in the direction of logic operation inspection and faulty computer hardware detection, can solve the problems of complex communication interface and large memory resources, and achieve the effect of reducing the number of output pins and reducing demand
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[0058] The core of the field programmable gate array (FPGA) on-chip logic analyzer system that multiplexes the Joint Test Action Group (JTAG) interface of the present invention is to realize the Joint Test Action Group (JTAG) interface by adding instructions and wiring constraints The use of online sampling selection registers to select sampling signals reduces the demand for on-chip memory resources, and a simple and reliable data transmission protocol is designed to realize simultaneous observation of sampling data and trigger status.
[0059] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0060] Such as figure 1 As shown, a field programmable gate array (FPGA) on-chip logic analyzer system that multiplexes the Joint Test Action Group (JTAG) interface of the present invention adds on-chip logic analy...
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