1–36

Chapter 1: Cyclone IV Device Datasheet

Switching Characteristics

Cyclone IV Device Handbook,

December 2013

Altera Corporation

Volume 3

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)

Parameter

Paths

Affected

Number

of

Settings

Min

Offset

Max Offset

Unit

Fast Corner

Slow Corner

C6

I7

C6

C7

C8

I7

Input delay from pin to

internal cells

Pad to I/O

dataout to

core

7

0

1.313

1.209

2.184

2.336

2.451

2.387

ns

Input delay from pin to

input register

Pad to I/O

input register

8

0

1.312

1.208

2.200

2.399

2.554

2.446

ns

Delay from output

register to output pin

I/O output

register to

pad

2

0

0.438

0.404

0.751

0.825

0.886

0.839

ns

Input delay from

dual-purpose clock pin

to fan-out destinations

Pad to global

clock

network

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)

Parameter

Paths

Affected

Number

of

Settings

Min

Offset

Max Offset

Unit

Fast Corner

Slow Corner

C6

I7

C6

C7

C8

I7

Input delay from pin to

internal cells

Pad to I/O

dataout to

core

7

0

1.314

1.210

2.209

2.398

2.526

2.443

ns

Input delay from pin to

input register

Pad to I/O

input register

8

0

1.313

1.208

2.205

2.406

2.563

2.450

ns

Delay from output

register to output pin

I/O output

register to

pad

2

0

0.461

0.421

0.789

0.869

0.933

0.884

ns

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