ISO 11992-1:2019 Road vehicles - Interchange of digital information on electrical connections between towing and towed vehicles - Part 1: Physical and data-link layers

standard by International Organization for Standardization, 05/01/2019

Full Description

ISO 11992-1:2019 describes the data link layer (DLL) and physical layer (PHY) for the two CAN-based network interfaces specified in the 11992-series.

The DLL sub-clauses are composed of:

DLL protocol entity requirements;

DLL device interface requirements; and

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 can 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; and

PS network system requirements.

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

PMA protocol entity requirements; and

PMA device interface requirements.

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

PMD entity requirements;

PMD device interface requirements; and

PMD network system requirements.