XC4013E Datasheet, PDF (15/68 Pages) Xilinx, Inc – XC4000E and XC4000X Series Field Programmable Gate Arrays

R
XC4000E and XC4000X Series Field Programmable Gate Arrays
CARRY
LOGIC
C _OUT C _{IN DOWN}
G
CARRY
G4
D _IN
G
Y
H
G3
G2
G1
COUT0
H1
G
DIN
H
S/R
G
D
Q
YQ
F
EC
6
H
F
CARRY
F4
F3
F2
F1
DIN
H
S/R
G
D
Q
XQ
F
EC
F
H
X
F
CINUP
C _OUT
K
Figure 13: Fast Carry Logic in XC4000E CLB (shaded area not present in XC4000X)
S/R
EC
X6699
May 14, 1999 (Version 1.6)
6-19