ISO 11992-1
Road vehicles — Interchange of digital information on electrical connections between towing and towed vehicles — Part 1: Physical and data-link layers
| Organization: | ISO |
| Publication Date: | 1 May 2019 |
| Status: | active |
| Page Count: | 32 |
| ICS Code (Car informatics. On board computer systems): | 43.040.15 |
scope:
This document 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.
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