EP4SE360F35I4 Datasheet, PDF (321/432 Pages) Altera Corporation – This section provides a complete overview of all features relating to the Stratix IV device family, which is the most architecturlly advanced

Chapter 8: High-Speed Differential I/O Interfaces and DPA in Stratix IV Devices
Differential Pin Placement Guidelines
8–41
Figure 8–33. Invalid Placement of DPA-Enabled Differential I/Os Driven by Both Center Left and
Right PLLs
DPA-enabled
Diff I/O
DPA-enabled
Diff I/O
DPA-enabled
Diff I/O
DPA-enabled
Diff I/O
Reference
CLK
Center Left /Right
PLL
Center Left /Right
PLL
Reference
CLK
DPA-enabled
Diff I/O
DPA-enabled
Diff I/O
DPA-enabled
Diff I/O
DPA-enabled
Diff I/O
September 2012 Altera Corporation
Stratix IV Device Handbook
Volume 1