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Altera_Forum
Honored Contributor
15 years agoconfig fpgas with other fpga in AS mode
When I config FPGAs with other FPGA in AS mode,I met troubles below. When I select 3.3v LVTTL as IO STANDARD,the phenomenon is as below. FPGA-1 : the DCLK pin's voltage is about 3.3v FPGA-2 : ...
Altera_Forum
Honored Contributor
15 years ago --- Quote Start --- It's unclear what you are trying to achive.In the shown circuit, it's not possible to configure the slave FPGAs by the master FPGA directly, only writing the EPCS would be an option. But the circuit is apparently incomplete, DAT0 is missing. --- Quote End --- Yes,you are right.I just want to achive FPGAs to be configed by writing EPCS.And also,the DAT0 was not draw.In fact,the DAT0 exists.But,the master FPGA don't need it,so i did not draw it.