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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r

9/26/02 Revision D Page 1

Application Note AN-2030 2

Digital Diagnostic Monitoring Interface 3

for SFP Optical Transceivers 4

1. Scope and Overview 6

This document defines an enhanced digital diagnostic monitoring interface available in 8

Finisar SFP and GBIC optical transceivers. The interface allows real time access to 9

device operating parameters, and it includes a sophisticated system of alarm and 10

warning flags which alerts end-users when particular operating parameters are outside 11

of a factory set normal range. The interface is fully compliant with SFF-8472, “Digital 12

Diagnostic Monitoring Interface for Optical Transceivers", revision 9.3. 13

These digital diagnostic features are implemented in all Finisar SFP transceivers that 15

contain a “D” in the part number suffix (for example, FTRJ-1319-7D-2.5), as well as 16

DWDM and CWDM GBICs. All next generation Finisar SFPs utilizing the new part 17

numbering scheme (e.g. FTRJ1621P1BCL) also have the same diagnostic capability. 18

The interface is an extension of the serial ID interface defined in the GBIC specification 20

as well as the SFP MSA. Both specifications define a 256-byte memory map in 21

EEPROM, which is accessible over a 2-wire serial interface at the 8 bit address 22

1010000X (A0h). The digital diagnostic monitoring interface makes use of the 8 bit 23

address 1010001X (A2h), so the originally defined serial ID memory map remains 24

unchanged. The interface is identical to, and is thus fully backward compatible with both 25

the GBIC Specification and the SFP Multi Source Agreement. The complete interface is 26

described in Section 3 below. 27

The operating and diagnostics information is monitored and reported by a Digital 29

Diagnostics Transceiver Controller (DDTC), which is accessed via a 2-wire serial bus. 30

Its physical characteristics are defined in Section 4. 31

2. Applicable Documents 35

Gigabit Interface Converter (GBIC). SFF document number: SFF-0053, rev. 5.5, 37

September 27, 2000. 38

Small Form Factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA), 40

September 14, 2000. 41

Digital Diagnostic Monitoring Interface for Optical Transceivers: SFF-8472, Draft 43

Revision 9.3, August 1, 2002. 44

1 2 3 4 5 6 ... 34 35

F i n i s a r 1

Inhaltsverzeichnis

Seite 1 - F i n i s a r

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 1 1 Application Note AN-2030 2

Seite 2

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 10 transceiver technology. It is

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 11 Vendor Rev 1 The vendor revis

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 12 Options 1 The bits in the opt

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 13 1 Date Code 2 The date code

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 14 Table 3.8: Diagnostic Monitor

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 15 Enhanced Options 1 “Enhanced

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 16 1 Table 3.10: I/O Timing for

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 17 1 Diagnostics 2 2 wire seria

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 18 calibrated to absolute units

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 19 External Calibration 1 Measur

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 2 1 3. Enhanced Digital Diagno

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 20 5) Measured received optica

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 21 Calibration Constants 1 2 TA

Seite 15

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 22 The slope constants at addres

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 23 1 Table 3.16c: IEEE-754 Sing

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 24 Real Time Diagnostic Registers

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 25 110 1 LOS Digital state of t

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 26 Table 3.18: Alarm and Warning F

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 27 Bytes 123 – 126 contain write-o

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 28 4. DDTC Electrical Interface

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 29 2-Wire Interface Reset: After

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 3 1 Figure 3.1: Digital Diagnos

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 30 Acknowledge Polling: Once the

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 31 Detailed 2-Wire Serial Port Op

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 32 Within the bus specifications a

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 33 of the command/control byte (R/

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 34 DC ELECTRICAL CHARACTERISTICS

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 35 For More Information Finisar

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 4 Table 3.1 Serial ID: Data Fiel

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 5 Identifier 1 The identifier

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 6 1 TABLE 3.3: Connector value

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 7 Transceiver 1 The following bi

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 8 The SONET compliance code bits

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AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers F i n i s a r 9/26/02 Revision D Page 9 BR, nominal 1 The nominal bit

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Finisar AN-2030 Bedienungsanleitung

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Inhaltsverzeichnis

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