In bonded configurations, both the parallel clock and serial clock are sourced from either the x6 or xN clock line.
The central clock dividers source the serial clock from a transmitter PLL from the same transceiver bank using the x1 clock line. The central clock divider generates the parallel clock and drives both the serial clock and parallel clock on the x6 clock line, which can drive the xN clock line.
Figure 60. Five Transmitter-Only Channels Configured in Bonded ConfigurationThe figure shows five transmitter-only channels configured in a bonded configuration and driven by the channel PLL of channel 4 configured as a CMU PLL. The central clock divider of channel 4 generates a parallel clock and drives both the serial clock and parallel clock on the x6 clock line. All bonded channels source both serial and parallel clocks from the x6 clock line.