IEEE Std 802.3bv-2017 pdf download – IEEE Standard for Ethernet Amendment 9: Physical Layer Specifications and Management Parameters for 1 000 Mb/s Operation Over Plastic Optical Fiber.
115. Physical Coding Sublayer (PCS), Physical Medium Attachment (PMA) sublayer, and Physical Medium Dependent (PMD) sublayer, types 1000BASE-RHA, 1000BASE-RHB, and 1000BASE-RHC 115.1 Overview 1000BASE-H comprises a Physical Coding Sublayer (PCS) and a Physical Medium Attachment (PMA) sublayer that supports Physical Medium Dependent (PMD) sublayers for operation at 1000 Mb/s over duplex plastic optical fiber (POF) as the transmission medium. The following three port types with different PMDs are defined: 1000BASE-RHA, 1000BASE-RHB, and 1000BASE-RHC (collectively referred to as 1000BASE-RHx). 1000BASE-RHA specifications are driven by the requirements of home and other consumer networks. Connection of the PMD to the step index plastic optical fiber (SI-POF) medium is typically not a mated connector. Rather, a bare duplex cable is attached with a clamp in the PMD receptacle. 1000BASE-RHB specifications are driven by the requirements for industrial applications. Connection of PMD to the SI-POF medium is typically with a PMD receptacle and mated plug. A harsh environment is expected (e.g., extended temperature range, dust), and the connector is typically terminated in the field to facilitate flexible equipment interconnection layout. 1000BASE-RHC specifications are driven by requirements for automotive applications. Connection of PMD to the SI-POF medium is with a PMD receptacle and mated plug. PMD and in-line connectors and the cable have to support specific requirements for installation in a vehicle: Kojiri-safe, dust protection, vibration robustness, tensile strength, etc. 115.1.1 Features The following are the features of the 1000BASE-H set of PHYs: a) Specified to operate with the GMII (Clause 35). b) Full duplex operation. c) Support for BER of 10 –12 or better. d) Communication side-channel for PHY management, operations, administration, and maintenance between link partners. e) Operation in automotive, industrial, and home network environments.
115.1.2 Conventions The notation used in the state diagrams in this clause follows the conventions in 21.5. Should there be a discrepancy between a state diagram and descriptive text, the state diagram prevails. 115.1.3 Relationship of 1000BASE-RHx to other standards The relationship between a 1000BASE-RHx PHY, the ISO Open Systems Interconnection (OSI) Reference Model, and the IEEE 802.3 Ethernet Model is shown in Figure 115–1. The physical layer connects one Annex 4A Media Access Control (MAC) to the medium. This clause specifies the Physical Coding Sublayer (PCS), Physical Medium Attachment (PMA), and Physical Medium Dependent (PMD) components of the physical layer device (PHY).