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UVM -Control an interface pin from different agents


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Hi all,

 

I'm doing verification for an PHY between SPI master and a memory chip. I make two agents one for master to transfer the request, one mimics the memory slave to reply. PHY will be hooked up to two interfaces that of SPI Master and Memory. During sending request and reply data, Chip Select Pin (in SPI interface) must go low to enable the transaction. But I don't know how to control this pin when It sends the reply from memory. Because this pin is not an interface of memory slave agent. Could anyone give me some advice? Could I use phases to control the env that has different agents?

 

Thank you,

Nhat 

 

 

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