5–26
Altera Corporation
Stratix II Device Handbook, Volume 2
January 2008
Differential Pin Placement Guidelines
Non-DPA Differential I/O Usage Guidelines
When a differential channel or channels of left or right banks are used in
non-DPA mode, you must adhere to the guidelines in the following
sections.
Fast PLL/Differential I/O Driving Distance
■
As shown in
Figure 5–24, each fast PLL can drive all the channels in
the entire bank.
Figure 5–24. Fast PLL Driving Capability When Driving Non-DPA Differential
Channels
Fast PLL
Diff I/O
Fast PLL
Ref CLK
Diff I/O
Ref CLK
Diff I/O
Each PLL Can Drive
the Entire Bank
Ref CLK
Center PLL
Corner PLL
