3.3. Transmitter Clock Network
The transmitter clock network routes the clock from the transmitter PLL to the transmitter channel. It provides two types of clocks to the transmitter channel:
- High Speed Serial clock—high-speed clock for the serializer.
- Low Speed Parallel clock—low-speed clock for the serializer and the PCS.
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
- GT clock lines
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