ANSI SCTE 196-2019 pdf free download – SFP-RF: Interface Specifications for an RF-Modulated Small Form Factor Pluggable Optical Module.
1.0sCOPE
This document is identical to SCTE 196 2013 except for informative components which mayhave been updated such as the title page, NOTICE text, headers and footers. No normativechanges have been made to this document.
The standardization and deployment of optical interfaces for headend
equipment offer cost and power savings to MSOs. However, implementingoptical interfaces in these devices presents significant technical challenges,since the lack of standardization may result in too many combinations ofinterfaces to support effectively in a headend device (power, wavelengths,cards,etc.).
Because of this challenge, the following specification proposes a standardfor the interfaces between a downstream laser transmitter module and itshost. The module is based on the [SFF-8431], but the input will consist ofRF-modulated signals that will be amplitude modulated onto an opticalcarrier. For the purpose of this specification, this module is referred to asSFP-RF.This SFP-RF optical transmitter module could be integrated intoheadend equipment, such as a Converged Cable Access Platform(CCAP), aCable Modem Termination System(CMTS), an Edge QAM, or a forwardoptical transmitter shelf, reducing the need for devices dedicated to forwardlasers.The SFP-RF optical transmitter module will function as a downstream laser for the output of cable edge devices. The primary
difference between the SFP-RF optical transmitter module and the XFP-RFoptical transmitter module is the size of the module and the link lengthssupported.
This standard will focus on the communications, electrical, and mechanicalinterfaces for the SFP-RF optical transmitter module.Unless otherwisenoted, requirements held within this standard apply both to the transmittermodule and its host.
2.0 NORMATIVE REFERENCES
The following documents contain provisions, which, through reference in this text,
constitute provisions of the standard.At the time of Subcommittee approval, the editionsindicated were valid.All standards are subject to revision; and while parties to any agreement based on this standard are encouraged to investigate the possibility of applyingthe most recent editions of the documents listed below, they are reminded that newer editions of those documents may not be compatible with the referenced version.
3.0 INFORMATIVE REFERENCES
The following documents may provide valuable information to the reader but are not required when complying with this specification.
3.1 SCTE Standards and Specifications
6.0 MANAGEMENT INTERFACE 2-Wire Communications (I 2 C) for the SFP-RF module are based upon [XFP MSA]. I²C is an implementation of the NXP (formerly Philips) I²C [UM10204] specification with mapped memory address locations (also known as “well-known addresses”) for diagnostics and operations. The SFF Committee specifies the I²C common memory mapping in [XFP MSA] and [SFF-8477] for SFP and XFP, as well as additional physical layer requirements. This specification uses the same well-known memory map locations (addresses) for functions that are the same or substantially similar. Because the SFP-RF is a RF transmitter (and not a digital transceiver), some memory map fields from [XFP MSA] and [SFF-8477] are re-allocated or not used; in addition, some memory map fields have been added.
The SFP-RF module shall implement the I 2 C requirements specified in [XFP MSA], except where specified differently in the following sections.ANSI SCTE 196 pdf download.