EP2AGX95EF29C6N Datasheet, PDF (277/380 Pages) Altera Corporation – Device Interfaces and Integration

Chapter 8: High-Speed Differential I/O Interfaces and DPA in Arria II Devices
Differential Pin Placement Guidelines
8–31
Using Both Corner PLLs in Arria II GX Devices
You can use both corner PLLs to drive DPA-enabled channels simultaneously, if they
drive the channels in their adjacent banks only. There must be at least one row of
separation between the two groups of DPA-enabled channels.
If one of the corner PLLs drives DPA-enabled channels in the upper and lower I/O
banks, you cannot use the center PLLs. You can use the other corner PLL to drive
DPA-enabled channels in their adjacent bank only. There must be at least one row of
separation between the two groups of DPA-enabled channels.
If the upper corner PLL drives DPA-enabled channels in the lower I/O bank, the
lower corner PLL cannot drive DPA-enabled channels in the upper I/O bank, and vice
versa. In other words, the corner PLLs cannot drive cross-banks simultaneously, as
shown in Figure 8–26.
July 2012 Altera Corporation
Arria II Device Handbook Volume 1: Device Interfaces and Integration