Manuals / Finisar / Household Appliance / Home Security System

Finisar AN-2030 specifications F i n i s a r, 19point format were posted on the worldwide web at

Models: AN-2030

1 35

Download 35 pages 39.34 Kb

Page 23

19point format were posted on the worldwide web at

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers

F i n i s a r

1

2Table 3.16c: IEEE-754 Single-Precision Floating Point Number Format

FUNCTION	SIGN	EXPONENT				MANTISSA
BIT	31	30……………………23		22……………………………………………………………0
BYTE		3		2	1		0
ß Most Significant							Least Significantà

3

4

5

6

7

8

9

10

11

Rx_PWR(4), as an example, is stored as in Table 3.16d.

Table 3.16d: Example of Floating Point Representation

BYTE	CONTENTS	SIGNIFICANCE
ADDRESS
56	SEEEEEEE	Most
57	EMMMMMMM	2nd Most
58	MMMMMMMM	2nd Least
59	MMMMMMMM	Least

12

13

14where S = sign bit; E = exponent bit; M = mantissa bit.

15

16Special cases of the various bit values are reserved to represent indeterminate values

17such as positive and negative infinity; zero; and “NaN”or not a number. NaN indicates

18an invalid result. As of this writing, explanations of the IEEE single precision floating

19point format were posted on the worldwide web at

20

21http://www.psc.edu/general/software/packages/ieee/ieee.html

22

23and

24

25http://research.microsoft.com/~hollasch/cgindex/coding/ieeefloat.html.

26

27 The actual IEEE standard is available at www.IEEE.org.

9/26/02 Revision D

Page 23

Image 23

Finisar AN-2030 specifications F i n i s a r, 19point format were posted on the worldwide web at

Contents

Digital Diagnostic Monitoring Interface F i n i s a r61. Scope and Overview 352. Applicable DocumentsF i n i s a r 4OverviewF i n i s a r 38Specific Data Field DescriptionsName of F i n i s a rTable 3.1 Serial ID Data Fields - Address A0 DataTABLE 3.2 Identifier values 15ConnectorF i n i s a r 1IdentifierF i n i s a r TABLE 3.3 Connector valuesDescription of connector Table 3.4: Transceiver codes F i n i s a r1Transceiver 13Encoding F i n i s a rTable 3.4a SONET Reach Specifiers 18Length 9μ F i n i s a r1BR, nominal 9Length 9μ-km21DWDM Channel Spacing F i n i s a r4Length Copper 13Vendor name20DWDM Wavelength Fraction F i n i s a r1Vendor Rev 12Laser Wavelength8BR, max F i n i s a r1Options Table 3.6 Option valuesTable 3.7 Date Code 9Diagnostic Monitoring TypeF i n i s a r Date CodeF i n i s a r Table 3.8 Diagnostic Monitoring TypeTable 3.9 Enhanced Options F i n i s a r1Enhanced Options 10CC EXT F i n i s a r4SFF-8472Compliance Table 3.11 SFF-8472ComplianceF i n i s a r 2DiagnosticsTemperature F i n i s a rTable 3.13 Digital temperature format 1External Calibration F i n i s a rF i n i s a r 12Alarm and Warning Thresholds1Calibration Constants 2 Wire Address A2hF i n i s a r Table 3.16b Format for offsets F i n i s a r19point format were posted on the worldwide web at F i n i s a rDescription Real Time Diagnostic RegistersF i n i s a r NameF i n i s a r Alarm and Warning FlagsF i n i s a r Reserved Optional Alarm and Warning Flag BitsByte Table 3.19 Password Addresses 2-WireAddress A2hTable 3.20 User EEPROM 2-WireAddress A2h F i n i s a rF i n i s a r 2-WireInterface Operation4.DDTC Electrical Interface Definition Overview 1.Clock up to nine cycles F i n i s a rSequential Address Read F i n i s a rCurrent Address Read Random ReadF i n i s a r Detailed 2 -WireSerial Port OperationThe DDTC may operate in the following two modes F i n i s a rPlease see definitions in the following pages Figure 1 2- Wire Protocol Data Transfer ProtocolFigure 2 2- Wire AC Characteristics F i n i s a rVcc = 3.15V to DC ELECTRICAL CHARACTERISTICSAC ELECTRICAL CHARACTERISTICS F i n i s a rSunnyvale, CA Tel For More InformationF i n i s a r Finisar Corporation 1308 Moffett Park Drive