Xilinx XC4000 Series

September 18, 1996 (Version 1.04) 4-39
T
O
C
L
B
A
R
R
A
Y
IK
OK
I1
CE
I2
DECODER
T
O
OCTAL
EDGE
DECODE
QUAD
LONG
SINGLE
DOUBLE
LONG
LONG
DOUBLE
DOUBLE
GLOBAL
IK
OK
I1
CE
I2
T
O
DECODER DECODER
Common to XC4000E and XC4000EX
XC4000EX only
IOB
IOB
DIRECT
Figure 33: Detail of Programmable Interconnect Associated with XC4000-Series IOB (Left Edge)