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Q: What type of embedded cores does the IEEE 1500 eVC apply to? A: The IEEE 1500 eVC applies to both wrapped and unwrapped IEEE 1500 compliant cores. The eVC supports out-of-the-box the full base functionality described in the IEEE standard, including mandatory instructions and registers. Q: DFT insertion is mostly automated. Why do I need to verify my scan chains, BIST controllers, etc? A: There are actually several reasons:
Q: The eVC seems to only support the serial TAM and mandatory instructions but my wrapper is connected to internal scan registers. Can I still use it? A: The eVC supports the mandatory 1500 features, as described by the protocol. Such features are actually implemented as library based on the building blocks that the eVC provides; such building blocks can be used to describe arbitrary 1500 instructions, registers and even TAMs, depending on your design's needs. Q: How about virtual registers? A: Virtual registers are chains whose cells can also be part of other chains. For example, a designer could define a register that connects part of the WBR to an internal scan path and which is selectable by a separate instruction. The eVC can support such register definitions, providing generation, monitoring and functional coverage collections, as well as maintaining cell state when switching to other instructions. Q: My system-level interface is a JTAG tap. How can I use the eVC to verify at that level? A: The eVC has a dual built-in BFM which allows the user to drive sequences in either P1500 native or 1149.1 (JTAG) mode. This feature gracefully allows testbench migration from a core-level to a system-level environment where a JTAG decoder is used to translate JTAG TAP signalling to a 1500 TAM. Q: How about acceleration? A: Since the eVC requires no feedback between the DUT and sequence driver/BFM, its performance could be greatly enhanced on a simulaiton accelaration plarform. We are currently evaluating performance on Verisity's SpeXtreme platform. Please contact us for details. Q: I'm interested in seeing the eVC at work. How can I setup a demo/evaluation? A: Please contact us! We'll be happy to set you up with an evaluation of the eVC with no strings attached. |
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