
Table 1-9: Stratix V Recommended Speed Grades for All Widths, Link Widths, and Application Layer Clock
Frequencies
Link Rate Link Width Interface
Width
Application Clock
Frequency (MHz)
Recommended Speed Grades
Gen1
x1 64 bits 62.5
(6)
,125 –1, –2, –3, –4
x2 64 bits 125 –1, –2, –3, –4
x4 64 bits 125 –1, –2, –3, –4
x8 64 bits 250 –1, –2, –3
(7)
x8 128 Bits 125 –1, –2, –3, –4
Gen2
x1 64 bits
125
–1, –2, –3, –4
x2 64 bits 125 –1, –2, –3, –4
x4 64 bits 250 –1, –2, –3
x4 128 bits 125 –1, –2, –3, –4
x8 128 bits 250 –1, –2, –3
x8 256 bits 125 –1, –2, –3, –4
Gen3
x1 64 bits 125 –1, –2, –3, –4
x2 64 bits 250 –1, –2, –3, –4
x2 128 bits 125 –1, –2, –3, –4
x4 128 bits 250 –1, –2, –3
x4 256 bits 125 –1, –2, –3,–4
x8 256 bits 250 –1, –2, –3
Related Information
• Area and Timing Optimization
• Altera Software Installation and Licensing Manual
(6)
This is a power-saving mode of operation
(7)
The -4 speed grade is also possible for this configuration; however, it requires significant effort by the end
user to close timing.
1-12
V-Series Recommended Speed Grades
UG-01154
2014.12.18
Altera Corporation
Datasheet
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