X1 Clock Lines - Intel Cyclone 10 GX User Manual

3. PLLs and Clock Networks
UG-20070 | 2018.09.24
In a bonded channel configuration, both the serial clock and the parallel clock are
routed from the transmitter PLL to the transmitter channel. In a non-bonded channel
configuration, only the serial clock is routed to the transmitter channel, and the
parallel clock is generated locally within the channel. To support various bonded and
non-bonded clocking configurations, four types of transmitter clock network lines are
available:
•

x1 clock lines

• x6 clock lines
• xN clock lines
3.3.1. x1 Clock Lines
The x1 clock lines route the high speed serial clock output of a PLL to any channel
within a transceiver bank. The low speed parallel clock is then generated by that
particular channel's local clock generation block (CGB). Non-bonded channel
configurations use the x1 clock network.
The x1 clock lines can be driven by the ATX PLL, fPLL, or by either one of the two
channel PLLs (channel 1 and 4 when used as a CMU PLL) within a transceiver bank.
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Intel Cyclone 10 GX Transceiver PHY User Guide
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