Finisar AN-2030 specifications Enhanced Options

Page 15

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers

F i n i s a r

1Enhanced Options

2“Enhanced Options” is a 1 byte field with 8 single bit indicators which describe the

3optional digital diagnostic features implemented in the transceiver. Since transceivers

4will not necessarily implement all optional features described in this document, the

5“Enhanced Options” bit field allows the host system to determine which functions are

6 available over the 2 wire serial bus. A ‘1’ indicates that the particular function is

7implemented in the transceiver. Bits 3 and 6 of byte 110 (see Table 3.17) allow the

8user to control the Rate_Select and TX_Disable functions. If these functions are not

9implemented, the bits remain readable and writable, but the transceiver ignores them.

10

Finisar transceivers

with

alarm

and

warning flags enabled contain the value

11

0b10010000 at location 93.

 

 

 

 

 

12

 

 

 

 

Table 3.9: Enhanced Options

 

 

 

 

 

 

 

 

 

 

Data Address

 

Bits

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

93

 

 

7

 

Optional Alarm/warning flags implemented for

 

 

 

 

 

 

 

 

all monitored quantities (see Table 3.18)

 

 

 

 

 

 

 

 

 

 

 

 

93

 

 

6

 

Optional Soft TX_DISABLE control and

 

 

 

 

 

 

 

 

monitoring implemented

 

 

 

 

 

 

 

 

 

 

 

 

93

 

 

5

 

Optional Soft TX_FAULT monitoring

 

 

 

 

 

 

 

 

implemented

 

 

 

93

 

 

4

 

Optional Soft RX_LOS monitoring

 

 

 

 

 

 

 

 

implemented

 

 

 

93

 

 

3

 

Optional Soft RATE_SELECT control and

 

 

 

 

 

 

 

 

monitoring implemented

 

 

 

 

 

 

 

 

 

 

 

 

93

 

 

2-0

 

Reserved

 

13

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

16

Note that the “soft”

control functions -

TX_DISABLE, TX_FAULT, RX_LOS, and

17RATE_SELECT do not meet the timing requirements specified in the SFP MSA section

18B3 “Timing Requirements of Control and Status I/O” and the GBIC Specification,

19revision 5.5, (SFF-8053), section 5.3.1, for their corresponding pins. The soft functions

20

allow a host to poll or set these values over the serial bus as an alternative to

21

monitoring/setting pin values.

Timing is vendor specific, but must meet the

22requirements specified in Table 3.10 below.

23

24

25

26

27

9/26/02 Revision D

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Contents 35 2. Applicable Documents Scope and OverviewEnhanced Digital Diagnostic Interface Definition Overview Control Functions 8 bytes Password Entry 8 bytesSpecific Data Field Descriptions Cal Constants BytesSerial ID Data Fields Address A0 DataName Bytes Description of Field Address Extended Identifier ConnectorIdentifier Identifier valuesDescription of connector Connector valuesTransceiver codes TransceiverCode Description of encoding mechanism 4a Sonet Reach SpecifiersEncoding Speed Reach Specifier bit DescriptionLength 50μ BR, nominalLength 9μ-km Length 9μVendor OUI Length CopperVendor name Dwdm Channel SpacingVendor Rev Laser WavelengthDwdm Wavelength Fraction 13 BR, min OptionsOption values BR, maxDiagnostic Monitoring Type Date CodeData Description of field Address N i s a r Enhanced Options 10 I/O Timing for Soft Control & Status Functions SFF-8472 Compliance11 SFF-8472 Compliance Diagnostics 13 Digital temperature format Temperature 12 Bit weights C for temperature reporting registersN i s a r 14 Alarm and Warning Thresholds 2-Wire Address A2h Alarm and Warning ThresholdsN i s a r 16b Format for offsets 16a Unsigned fixed-point binary format for slopes16d Example of Floating Point Representation 16c IEEE-754 Single-Precision Floating Point Number FormatBit Name Description LOS Alarm and Warning Flags18 Alarm and Warning Flag Bits 2-Wire Address A2h Address # Bytes Name Description 19 Password Addresses 2-Wire Address A2h20 User Eeprom 2-Wire Address A2h Byte Bit Name DescriptionDdtc Electrical Interface Definition Overview Wire Interface OperationN i s a r Current Address Read Detailed 2 -Wire Serial Port Operation N i s a r Wire Protocol Data Transfer Protocol Vcc = 3.15V to DC Electrical CharacteristicsFor More Information
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