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what is you black box , a memory or some other analog module? If a memory , the memory can be control by clock , You may need to use
add write control, add control to add control signal .
what is you black box , a memory or some other analog module? If a memory , the memory can be control by clock , You may need to use
add write control, add control to add control signal .
1. you can change you black box behaiver model , i think you analog model has some signal effect by clock , so dft tools think those signal is a register.
2. force analog output pin to X, mask those signal ,
dft tools will generate pattern ignore those analog output pin
3. you can report black box to see does those analog module is black box , if don't , force those black box to black box.
in my postscan netlist i ve pad in which the inout pin is connected to a primary constraint TSTCLK with offset 0 . but in dftinsight i am seeing that TSTCLK is set to 'X'. why is so ?
the output from the pad is going to black box . what changes are to be made ?
The TSTCLK is connect to inout pin of black box?
If so , default dft tools auto constraint all output pin of black box to X.
And as you said , i think the black box maybe a PLL,
so the behaiver model may need modify.
The TSTCLK is connect to inout pin of black box?
If so , default dft tools auto constraint all output pin of black box to X.
And as you said , i think the black box maybe a PLL,
so the behaiver model may need modify.
no the inout pin is connected to pad output of which is connected to the black box .
inout pin is TSTCLK which in dftinsight is showing as 'X' so the output of the pad is also 'X' now . how can i change it some other ? do i have to edit the netlist .
can u explain in detail how to modify behavior model ?
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