1–26
Chapter 1: Cyclone III Device Data Sheet
Switching Characteristics
IOE Programmable Delay
Table 1–37 and Table 1–38 list IOE programmable delay for Cyclone III devices.
Table 1–37. Cyclone III Devices IOE Programmable Delay on Column Pins (Note 1), (2)
Max Offset
Slow Corner
C8
Number
Paths
Affected
Min
Offset
Parameter
of
Fast Corner
A7, I7 C6
Unit
Settings
C6
C7
I7
A7
Pad to I/O
dataout to
core
Input delay from pin to
internal cells
7
8
2
0
0
0
1.211 1.314 2.175
2.32
2.386 2.366
2.49
ns
ns
ns
Input delay from pin to Pad to I/O
1.203 1.307
2.19
2.387
2.54
2.43
2.545
input register
input register
I/O output
register to
pad
Delay from output
register to output pin
0.479 0.504 0.915 1.011 1.107 1.018 1.048
0.664 0.694 1.199 1.378 1.532 1.392 1.441
Input delay from
Pad to global
dual-purpose clock pin clock
to fan-out destinations network
12
0
ns
Notes to Table 1–37:
(1) The incremental values for the settings are generally linear. For exact values of each setting, use the latest version of the Quartus II software.
(2) The minimum and maximum offset timing numbers are in reference to setting ‘0’ as available in the Quartus II software.
Table 1–38. Cyclone III Devices IOE Programmable Delay on Row Pins
(Note 1), (2)
Max Offset
Slow Corner
C8
Number
Paths
Affected
Min
Offset
Parameter
of
Fast Corner
A7, I7 C6
Unit
Settings
C6
C7
I7
A7
Pad to I/O
dataout to
core
Input delay from pin to
internal cells
7
8
2
0
0
0
1.209 1.314 2.174 2.335 2.406 2.381 2.505
1.207 1.312 2.202 2.402 2.558 2.447 2.557
ns
ns
ns
Input delay from pin to Pad to I/O
input register
input register
I/O output
register to
pad
Delay from output
register to output pin
0.51
0.537 0.962 1.072 1.167 1.074 1.101
Input delay from
dual-purpose clock pin
to fan-out destinations
Pad to global
clock network
12
0
0.669 0.698 1.207 1.388 1.542 1.403
1.45
ns
Notes to Table 1–38:
(1) The incremental values for the settings are generally linear. For exact values of each setting, use the latest version of Quartus II software.
(2) The minimum and maximum offset timing numbers are in reference to setting ‘0’ as available in the Quartus II software
Cyclone III Device Handbook, Volume 2
© January 2010 Altera Corporation
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