XC4002XL XILINX [Xilinx, Inc], XC4002XL Datasheet - Page 49

• Manufacturer Part Number: XC4002XL
• Description: Programmable Gate Arrays
• Manufacturer: XILINX [Xilinx, Inc]

May 14, 1999 (Version 1.6)
Figure 47: Start-up Timing
CCLK_NOSYNC
UCLK_NOSYNC
R
CCLK_SYNC
UCLK_SYNC
XC4000E/X
XC4000E/X
XC4000E/X
XC4000E/X
XC2000
XC3000
CCLK
Synchronization
Uncertainty
Global Reset
Global Reset
DONE
I/O
DONE
I/O
DONE
I/O
DONE
I/O
DONE
I/O
DONE
I/O
GSR Active
GSR Active
GSR Active
GSR Active
Length Count Match
C1, C2 or C3
XC4000E and XC4000X Series Field Programmable Gate Arrays
DONE IN
C1
C1
C1
Di
Di
DONE IN
Di+1
Di+1
C2
C2
C2
F
U2
U2
U2
U2
Di
UCLK Period
Di
Di+1
Di+1
U3
U3
U3
F
C3
C3
C3
CCLK Period
Di+2
Di+2
U4
U4
U4
F
F
C4
C4
C4
F
F
X9024
F = Finished, no more
configuration clocks needed
Daisy-chain lead device
must have latest F
Heavy lines describe
default timing
6-53
6