This Figure shows a block diagram of the transmit path.
The PCS transmit block has the following features.
•Transmit buffer management.
•8B/10B encoder for PCIe v2.0, DisplayPort, and USB3.0 only. Other protocols contain the encoder in the MAC IP.
•Transmit power state finite state machine (FSM).
•Low-frequency periodic signal (LFPS)/beacon transmitter (USB 3.0 and PCIe).
•Symbol (comma) generator for PCIe v2.0 and USB3.0 only. Other protocols contain the generator in their MAC IP.