Description
The Arria® II GX device DQS phase shift error specification is shown in the table below:
| Arria II GX DQS Phase Shift Error Specification | |||
|
Number of DQS Delay Buffer | |||
|---|---|---|---|
| C4 speed grade |
|---|
| I3, I5, C5 speed grades |
|---|
C6 speed grade
|
1 |
26ps |
30ps |
36ps |
|
2 |
52ps |
60ps |
72ps |
|
3 |
78ps |
90ps |
108ps |
|
4 |
104ps |
120ps |
144ps |
The phase shift error specification listed in the table is the absolute maximum and minimum error. For example, skew on three DQS delay buffers in a C4 speed grade is 78ps or /-39ps.
This specification will be included in the future release of the data sheet in the Arria II Device Handbook.