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Quad net
Figure 17: Global Clock Structure
&ORFN
Logic Cells (Internal)
I/O’s (External)
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3DUDPHWHUV
&ORFN 3HUIRUPDQFH
*OREDO
'HGLFDWHG
Clock signal generated internally
1.51 ns (max)
n/a
Clock signal generated externally
2.06 ns (max)
1.73 ns (max)
7DEOH (FOLSVH *OREDO &ORFN 3HUIRUPDQFH
&ORFN 6HJPHQW
3DUDPHWHU
9DOXH QV
0LQ
0D[
tPGCK
Global clock pin delay to quad net
-
tBGCK
Global clock buffer delay (quad net
to flip flop)
-
1.34
0.56
WWWWWW ZZZTXLFNORJLFFRP
Programmable Clock
External Clock
Global Clock Buffer
Global Clock
tPGCK
tBGCK
Figure 18: Global Clock Structure Schematic
Preliminary
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