
Fusion Family of Mixed Signal FPGAs
Revision 4
2-171
Table 2-93 Summary of I/O Timing Characteristics – Software Default Settings
Commercial Temperature Range Conditions: TJ = 70°C, Worst-Case VCC = 1.425 V,
Worst-Case VCCI = I/O Standard Dependent
Applicable to Advanced I/Os
I/O Standard
Drive
S
trength
(mA)
Slew
Rat
e
Ca
p
acitive
Lo
ad
(p
F)
External
Re
si
st
or
(O
hm)
t
DO
U
T
t
DP
t
DI
N
t
PY
t
EOUT
t
ZL
t
ZH
t
LZ
t
HZ
t
ZLS
t
ZH
S
Unit
s
3.3 V LVTTL/
3.3 V LVCMOS
12 mA
High 35 pF
–
0.49 2.64 0.03 0.90 0.32 2.69 2.11 2.40 2.68 4.36 3.78 ns
2.5 V LVCMOS
12 mA
High 35 pF
–
0.49 2.66 0.03 0.98 0.32 2.71 2.56 2.47 2.57 4.38 4.23 ns
1.8 V LVCMOS
12 mA
High 35 pF
–
0.49 2.64 0.03 0.91 0.32 2.69 2.27 2.76 3.05 4.36 3.94 ns
1.5 V LVCMOS
12 mA
High 35 pF
–
0.49 3.05 0.03 1.07 0.32 3.10 2.67 2.95 3.14 4.77 4.34 ns
3.3 V PCI
Per PCI
spec
High 10 pF 25 2 0.49 2.00 0.03 0.65 0.32 2.04 1.46 2.40 2.68 3.71 3.13 ns
3.3 V PCI-X
Per PCI-X
spec
High 10 pF 25 2 0.49 2.00 0.03 0.62 0.32 2.04 1.46 2.40 2.68 3.71 3.13 ns
LVDS
24 mA
High
–
0.49 1.37 0.03 1.20 N/A N/A N/A N/A N/A N/A N/A ns
LVPECL
24 mA
High
–
0.49 1.34 0.03 1.05 N/A N/A N/A N/A N/A N/A N/A ns
Notes:
1. For specific junction temperature and voltage-supply levels, refer to Table 3-6 on page 3-7 for derating values. for connectivity. This resistor is not required during normal operation.
Table 2-94 Summary of I/O Timing Characteristics – Software Default Settings
Commercial Temperature Range Conditions: TJ = 70°C, Worst-Case VCC = 1.425 V,
Worst-Case VCCI = I/O Standard Dependent
Applicable to Standard I/Os
I/O Standard
Drive
S
trength
(mA)
Slew
Rate
Cap
acitiv
eLo
ad
(pF
)
Extern
al
Resisto
r(Oh
m
)
t
DO
U
T
t
DP
t
DI
N
t
PY
t
EOU
T
t
ZL
t
ZH
t
LZ
t
HZ
Unit
s
3.3 V LVTTL/
3.3 V LVCMOS
8 mA
High
35 pF
–
0.49 3.29 0.03 0.75 0.32 3.36 2.80
1.79
2.01
ns
2.5 V LVCMOS 8 mA
High
35pF
–
0.49 3.56 0.03 0.96 0.32 3.40 3.56
1.78
1.91
ns
1.8 V LVCMOS 4 mA
High
35pF
–
0.49 4.74 0.03 0.90 0.32 4.02 4.74
1.80
1.85
ns
1.5 V LVCMOS 2 mA
High
35pF
–
0.49 5.71 0.03 1.06 0.32 4.71 5.71
1.83
ns
Note: For specific junction temperature and voltage-supply levels, refer to Table 3-6 on page 3-7 for derating values.