ISO DIS 11992-1

Description / Abstract: This document describes the data link layer (DLL) and physical layer for the two CAN-based network interfaces specified in this standard series.

The DLL sub-clauses are composed of:

— DLL protocol entity requirements,

— DLL device interface requirements,

— DLL network system requirements.

Normally, the physical signalling sub-layer is implemented in the CAN protocol controller. The physical medium attachment sub-layer is normally implemented in the CAN transceiver or the System Base Chip (SBC). Optionally it may comprise also additional protection circuitry. The media-dependent sub-layer comprises the connectors and the cabling.

The physical signalling (PS) sub-clauses are composed of:

— PS entity requirements,

— PS device interface requirements,

— PS network system requirements.

The physical medium attachment (PMA) sub-clauses are composed of:

— PMA protocol entity requirements,

— PMA device interface requirements.

The physical medium dependent (PMD) sub-clauses are composed of:

— PMD entity requirements,

— PMD device interface requirements,

— PMD network system requirements.