Micrel, Inc.
MIC3003
Contents
Pin Configuration
.......................................................................................................................................................... 8
Pin Description
.............................................................................................................................................................. 8
Absolute Maximum Ratings
....................................................................................................................................... 10
Operating Ratings
....................................................................................................................................................... 10
Electrical Characteristics
........................................................................................................................................... 10
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
3
November 2009
M9999-111209-C
hbwhelp@micrel.com
or (408) 955-1690
MICREL [ MICREL SEMICONDUCTOR ]
