1–36
Chapter 1: Cyclone IV Device Datasheet
Switching Characteristics
Table 1–44 and Table 1–45 list the IOE programmable delay for Cyclone IV GX
devices.
Table 1–44. IOE Programmable Delay on Column Pins for Cyclone IV GX Devices (1), (2)
Max Offset
Slow Corner
C7 C8
Number
of
Settings
Paths
Affected
Min
Offset
Parameter
Fast Corner
C6 I7
Unit
C6
I7
Pad to I/O
dataout to
core
Input delay from pin to
internal cells
7
8
2
0
0
0
1.313 1.209 2.184 2.336 2.451 2.387
1.312 1.208 2.200 2.399 2.554 2.446
0.438 0.404 0.751 0.825 0.886 0.839
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
Input delay from
dual-purpose clock pin clock
to fan-out destinations network
Pad to global
12
0
0.713 0.682 1.228
1.41
1.566 1.424
ns
Notes to Table 1–44:
(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 1–45. IOE Programmable Delay on Row Pins for Cyclone IV GX Devices (1), (2)
Max Offset
Number
Paths
Affected
Min
Parameter
of
Fast Corner
Slow Corner
Unit
Offset
Settings
C6 I7
C6
C7 C8
I7
Pad to I/O
dataout to
core
Input delay from pin to
internal cells
7
8
2
0
0
0
1.314 1.210 2.209 2.398 2.526 2.443
1.313 1.208 2.205 2.406 2.563 2.450
0.461 0.421 0.789 0.869 0.933 0.884
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
Input delay from
dual-purpose clock pin
to fan-out destinations
Pad to global
clock network
12
0
0.712 0.682 1.225 1.407 1.562 1.421
ns
Notes to Table 1–45:
(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 IV Device Handbook,
Volume 3
December 2013 Altera Corporation
ALTERA [ ALTERA CORPORATION ]
