1.1.1 Physical Layer Functions
(Ask a Question)The physical layer is an electrical physical media attachment (PMA) required to connect to a PCIe system, and supports the following features:
- PCI Express 2.0 electrical compliance
- 2.5 and 5.0 Gbps common-mode logic (CML) electrical interface
- Signal integrity programmability including differential output voltage, transmitter de-emphasis, and receiver-side continuous-time linear equalization (CTLE)
- ±300 ppm clock-tolerance compensation
- Serializer and de-serializer
- 8b/10b symbol encoding/decoding
- Symbol alignment
- Framing and application of symbols to lanes
- Lane to lane Tx deskew