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7–50 Chapter 7: IP Core Interfaces
Physical Layer Interface Signals
Arria V Hard IP for PCI Express December 2013 Altera Corporation
User Guide
1 In all figures channels and PLLs that are gray are unused.
For variants that do not use all the channels in a bank, you can the other channels for
other protocols if your design meets one of the following two conditions:
The data rate and clock specification exactly match the PCI Express configuration
in which case you would route the CMU clock to all channels.
or
You can use the ATX PLL to provide clocks to the other channels.
The following figure shows channel utilization for Gen1 and Gen2 variants using the
ATX PLL. The ×8 variant is only available for Gen1.
Figure 7–36. Channel Placement Using CMU PLL
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