Altera Arria V Hard IP for PCI Express User Manual
Page 148

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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