EP2AGX260EF29I3N Datasheet, PDF (69/78 Pages) Altera Corporation – Device Datasheet for Arria II Devices

Chapter 1: Device Datasheet for Arria II Devices
Switching Characteristics
1–69
Table 1–57. External Memory Interface Specifications for Arria II GX Devices (Part 2 of 2)
Frequency
Mode
Frequency Range (MHz)
C4
I3, C5, I5
C6
5
270-410
270-380
270-320
6
320-450
320-410
320-370
Note to Table 1–57:
(1) Low indicates a 6-bit DQS delay setting; high indicates a 5-bit DQS delay setting.
Resolution
(°)
36
45
DQS Delay
Buffer Mode
(1)
High
High
Number of
Delay Chains
10
8
Table 1–58 lists the DLL frequency range specifications for Arria II GZ devices.
Table 1–58. DLL Frequency Range Specifications for Arria II GZ Devices
Frequency Mode
Frequency Range (MHz)
–3
–4
Available Phase Shift
0
90-130
90-120
22.5°, 45°, 67.5°, 90°
1
120-170
120-160
30°, 60°, 90°, 120°
2
150-210
150-200
36°, 72°, 108°, 144°
3
180-260
180-240
45°, 90°,135°, 180°
4
240-320
240-290
30°, 60°, 90°, 120°
5
290-380
290-360
36°, 72°, 108°, 144°
6
360-450
360-450
45°, 90°, 135°, 180°
7
470-630
470-590
60°, 120°, 180°, 240°
Note to Table 1–58:
(1) Low indicates a 6-bit DQS delay setting; high indicates a 5-bit DQS delay setting.
DQS Delay
Buffer Mode
(1)
Low
Low
Low
Low
High
High
High
High
Number of
Delay
Chains
16
12
10
8
12
10
8
6
Table 1–59 lists the DQS phase offset delay per stage for Arria II GX devices.
Table 1–59. DQS Phase Offset Delay Per Setting for Arria II GX Devices (Note 1), (2), (3)
Speed Grade
Min
Max
Unit
C4
7.0
13.0
ps
I3, C5, I5
7.0
15.0
ps
C6
8.5
18.0
ps
Notes to Table 1–59:
(1) The valid settings for phase offset are -64 to +63 for frequency modes 0 to 3 and -32 to +31 for frequency modes
4 to 5.
(2) The typical value equals the average of the minimum and maximum values.
(3) The delay settings are linear.
December 2013 Altera Corporation
Arria II Device Handbook Volume 3: Device Datasheet and Addendum