Micrel, Inc.

MIC3003GFL

July 2010

3

M9999-072910-A

Contents

General Description .......................................................................................................................................................... 1

Features ............................................................................................................................................................................. 1

Pin Configuration .............................................................................................................................................................. 8

Pin Configuration .............................................................................................................................................................. 8

Pin Description (MIC3003GFL only) ................................................................................................................................ 8

Absolute Maximum Ratings ........................................................................................................................................... 10

Operating Ratings ........................................................................................................................................................... 10

Electrical Characteristics ............................................................................................................................................... 10

Electrical Characteristics ............................................................................................................................................... 12

Electrical Characteristics ............................................................................................................................................... 13

Serial Interface Timing Diagram .................................................................................................................................... 14

Serial Interface Address Maps....................................................................................................................................... 15

Block Diagram ................................................................................................................................................................. 18

Analog-to-Digital Converter/Signal Monitoring............................................................................................................ 18

Alarms and Warnings Interrupt Source Masking.......................................................................................................... 19

Alarms and Warnings as TXFAULT Source ................................................................................................................. 21

Latching of Alarms and Warnings................................................................................................................................. 21

SMBus Multipart Support.............................................................................................................................................. 21

QGOP Pin Function ...................................................................................................................................................... 21

Calibration Modes ........................................................................................................................................................... 22

A/ External Calibration .................................................................................................................................................. 22

Voltage.................................................................................................................................................................... 22

Temperature ........................................................................................................................................................... 22

Bias Current ............................................................................................................................................................ 22

TX Power ................................................................................................................................................................ 22

RX Power................................................................................................................................................................ 23

B/ Internal Calibration ................................................................................................................................................... 23

Computing Internal Calibration Results .................................................................................................................. 23

C/ Reading the ADC Result Registers.......................................................................................................................... 25

RXPOT.......................................................................................................................................................................... 25

Laser Diode Bias Control.............................................................................................................................................. 25

Laser Modulation Control.............................................................................................................................................. 26

Power On and Laser Start-Up ...................................................................................................................................... 27

Fault Comparators ........................................................................................................................................................ 28

SHDN and TXFIN ......................................................................................................................................................... 29

Temperature Measurement .......................................................................................................................................... 30

Diode Faults.................................................................................................................................................................. 30

Temperature Compensation ......................................................................................................................................... 30

Alarms and Warning Flags ........................................................................................................................................... 32

Control and Status I/O .................................................................................................................................................. 32

System Timing................................................................................................................................................................. 34

Warm Resets ................................................................................................................................................................ 36

Power-On Hour Meter................................................................................................................................................... 36

Test and Calibration Features ...................................................................................................................................... 37

Serial Port Operation .................................................................................................................................................... 38

Block Writes.................................................................................................................................................................. 38

Acknowledge Polling..................................................................................................................................................... 39

Write Protection and Data Security .............................................................................................................................. 39

OEM Password ....................................................................................................................................................... 39

OEM Mode and User Mode .................................................................................................................................... 39

Detailed Register Descriptions ...................................................................................................................................... 40

Alarm Threshold Registers ............................................................................................................................................ 40

Temperature High Alarm Threshold ............................................................................................................................. 40

Temperature Low Alarm Threshold .............................................................................................................................. 40

Voltage High Alarm Threshold...................................................................................................................................... 40

D[7] read/write................................................................................................................................................................... 40