alanzheng
Newbie level 6
help! about sdf file
get slow.sdf file from back-end, eg:
CELL......
IOPATH I ZN (0.197:0.197:0.197) (0.225:0.225:0.225)
...
TIMING CHECK
HOLD (posedge D) (posedge CP) (-0.157:-0.157:-0.157)
I have two question:
1. why has two value for IOPATH? what's meaning for each?
2. why the timingcheck is negtive value?
Thanks!
get slow.sdf file from back-end, eg:
CELL......
IOPATH I ZN (0.197:0.197:0.197) (0.225:0.225:0.225)
...
TIMING CHECK
HOLD (posedge D) (posedge CP) (-0.157:-0.157:-0.157)
I have two question:
1. why has two value for IOPATH? what's meaning for each?
2. why the timingcheck is negtive value?
Thanks!