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anssprasad
Joined: 29 Jun 2007
Posts: 80
Helped: 7
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 27 Aug 2008 11:31 Scan chain insertion with RC |
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I got the following report when I used report dft_setup command in RC after scan chain insertion.
test_mode:
object name: h_resetn
pin name: h_resetn
hookup_pin: h_resetn
hookup_polarity: non_inverted
active: high
ideal: false
user defined: false
My h_resetn signal is active low. I did not explicitly specify the reset control signal to the tool. In the above report it shows that the reset is active high. I am confused.
_________________
Thanks
Prasad
Last edited by anssprasad on 30 Aug 2008 11:40; edited 1 time in total |
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jbeniston
Joined: 05 May 2005
Posts: 85
Helped: 8
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| 27 Aug 2008 12:52 Scan chain insertion with RC |
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During test, presumably you don't want the reset to be asserted.
I.e. is it saying the active state of test_mode rather than reset?
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santhosh007
Joined: 27 Aug 2008
Posts: 51
Helped: 13
Location: Bangalore
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| 28 Aug 2008 7:29 Re: Scan chain insertion with RC |
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Hi Prasad,
I think default is -active high, If scan chain is stitched then it is fine. You can check the ATPG by constraining the reset as active LOW signal.
Thanks
C Santhosh Kumar
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