88f6282 ethernet control 是mac，在soc上了
88e116r Ethernet transceiver 是phy，外接的
PHYceiver chip (Realtek RTL8201)
The Media Access Control (MAC) data communication protocol sub-layer, also known as the Medium Access Control, is a sublayer of the Data Link Layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for several terminals or network nodes to communicate within a multi-point network, typically a local area network (LAN) or metropolitan area network (MAN). The hardware that implements the MAC is referred to as a Medium Access Controller.
An Ethernet physical transceiver is often called a PHYceiver. It is a device that operates at physical layer of OSI network model.
- Data Link Layer (Layer 2)
- LLC (Logical Link Control Sublayer)
- MAC (Media Access Control Sublayer)
- RS (Reconciliation Sublayer) - This sublayer processes PHY Local/Remote Fault messages and handles DDR conversion
- PHY Layer (Layer 1)
- PCS (Physical Coding Sublayer) - This sublayer performs auto-negotiation and coding such as 8b/10b
- PMA (Physical Medium Attachment Sublayer) - This sublayer performs PMA framing, octet synchronization/detection, and x7 + x6 + 1 scrambling/descrambling
- PMD (Physical Medium Dependent Sublayer) - This sublayer consists of a transceiver for the physical medium