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_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
DS1876
SFP Controller with Dual LDD Interface
19-5153; Rev 0; 2/10
General Description
The DS1876 controls and monitors all functions for
dual transmitter modules. The memory map is based
on SFF-8472. The DS1876 supports APC and modula-
tion control and eye safety functionality for two laser
drivers. It continually monitors for high output current,
high bias current, and low and high transmit power to
ensure that laser shutdown for eye safety requirements
are met without adding external components. Six ADC
channels monitor V
CC
, temperature, and four external
monitor inputs that can be used to meet all monitoring
requirements.
Applications
Dual Tx Video SFP Modules
Ordering Information
Features
S Meets All SFF-8472 Transmitter Control and
Monitoring Requirements
S Six Analog Monitor Channels: Temperature, V
CC
,
PMON1, BMON1, PMON2, BMON2
PMON_ and BMON_ Support Internal and
External Calibration
Scalable Dynamic Range
Internal Direct-to-Digital Temperature Sensor
Alarm and Warning Flags for All Monitored
Channels
S Six Quick Trips for Fast Monitoring of Critical
Functions for Laser Safety
S Four 10-Bit Delta-Sigma Outputs
Each Controlled by 72-Entry Temperature
Lookup Table (LUT)
S Digital I/O Pins: Six Inputs, Five Outputs
S Comprehensive Fault Measurement System with
Maskable Laser Shutdown Capability
S Flexible, Two-Level Password Scheme Provides
Three Levels of Security
S 256 Additional Bytes Located at A0h Slave
Address
S Transmitter 1 is Accessed at A2h Slave Address
S Transmitter 2 is Accessed at B2h Slave Address
S I
2
C-Compatible Interface
S +2.85V to +3.9V Operating Voltage Range
S -40NC to +95NC Operating Temperature Range
S 28-Pin TQFN (5mm x 5mm x 0.8mm) Package
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
PART TEMP RANGE PIN-PACKAGE
DS1876T+
-40NC to +95NC
28 TQFN-EP*
DS1876T+T&R
-40NC to +95NC
28 TQFN-EP*
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1 2 3 4 5 6 ... 68 69

Inhaltsverzeichnis

Seite 1 - 19-5153; Rev 0; 2/10

_______________________________________________________________ Maxim Integrated Products 1For pricing, delivery, and ordering information, pleas

Seite 2 - TABLE OF CONTENTS

10 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD Interface

Seite 3 - TABLE OF CONTENTS (continued)

______________________________________________________________________________________ 11DS1876SFP Controller with Dual LDD Interface

Seite 4 - LIST OF TABLES

12 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD Interface

Seite 5 - ABSOLUTE MAXIMUM RATINGS

______________________________________________________________________________________ 13DS1876SFP Controller with Dual LDD Interfaceonly differenc

Seite 6 - -5 +10 mV

14 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD Interfacecorresponding

Seite 7 - AC ELECTRICAL CHARACTERISTICS

______________________________________________________________________________________ 15DS1876SFP Controller with Dual LDD InterfaceThe ADC resu

Seite 8

16 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceFor all device

Seite 9

______________________________________________________________________________________ 17DS1876SFP Controller with Dual LDD InterfaceFigure 7. 3-Bi

Seite 10 - TOP VIEW

18 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceDigital I/O Pi

Seite 11

______________________________________________________________________________________ 19DS1876SFP Controller with Dual LDD InterfaceTransmit Fault

Seite 12 - DACs During Power-Up

2 ______________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTABLE OF CONTE

Seite 13 - Table 1. Acronyms

20 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD Interfaceof SCL during

Seite 14 - Monitors and Fault Detection

______________________________________________________________________________________ 21DS1876SFP Controller with Dual LDD Interfacealways the s

Seite 15 - BMON1 BMON2 PMON1 PMON2 TEMP

22 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceEEPROM Write C

Seite 16 - Delta-Sigma Outputs

______________________________________________________________________________________ 23DS1876SFP Controller with Dual LDD InterfaceAuxiliary Mem

Seite 17 - Figure 8. DAC OFFSET LUTs

24 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD Interface

Seite 18 - Digital I/O Pins

______________________________________________________________________________________ 25DS1876SFP Controller with Dual LDD Interface

Seite 19 - C Communication

26 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD Interface

Seite 20

______________________________________________________________________________________ 27DS1876SFP Controller with Dual LDD Interface

Seite 21 - C Protocol

28 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceLower Memory R

Seite 22 - values

______________________________________________________________________________________ 29DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 23 - Shadowed EEPROM

_______________________________________________________________________________________ 3DS1876SFP Controller with Dual LDD InterfaceMemory Organiz

Seite 24 - Memory Map Access Codes

30 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 25 - Table 01h Register Map

______________________________________________________________________________________ 31DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 26 - Table 04h Register Map

32 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 27 - Table 06h Register Map

______________________________________________________________________________________ 33DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 28

34 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 29

______________________________________________________________________________________ 35DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 30

36 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 31

______________________________________________________________________________________ 37DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 32

38 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 33

______________________________________________________________________________________ 39DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 34

4 ______________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceLIST OF FIGURE

Seite 35

40 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceLower Memory,

Seite 36

______________________________________________________________________________________ 41DS1876SFP Controller with Dual LDD InterfaceTable 01h, Reg

Seite 37 - <D>

42 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 01h, Reg

Seite 38

______________________________________________________________________________________ 43DS1876SFP Controller with Dual LDD InterfaceTable 01h, Reg

Seite 39

44 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 01h, Reg

Seite 40

______________________________________________________________________________________ 45DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 41

46 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 42

______________________________________________________________________________________ 47DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 43

48 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 44 - Table 02h, Register 80h: MODE

______________________________________________________________________________________ 49DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 45

_______________________________________________________________________________________ 5DS1876SFP Controller with Dual LDD InterfaceStresses beyo

Seite 46

50 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 47

______________________________________________________________________________________ 51DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 48

52 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 49

______________________________________________________________________________________ 53DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 50

54 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 51

______________________________________________________________________________________ 55DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 52

56 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 53

______________________________________________________________________________________ 57DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 54 - FACTORY DEFAULT FFFF FFFFh

58 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 55

______________________________________________________________________________________ 59DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 56

6 ______________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceMOD_, APC_ ELE

Seite 57

60 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 58

______________________________________________________________________________________ 61DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 59

62 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 60

______________________________________________________________________________________ 63DS1876SFP Controller with Dual LDD InterfaceTable 02h, Reg

Seite 61

64 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 04h Regi

Seite 62

______________________________________________________________________________________ 65DS1876SFP Controller with Dual LDD InterfaceTable 04h, Reg

Seite 63

66 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 06h, Reg

Seite 64

______________________________________________________________________________________ 67DS1876SFP Controller with Dual LDD InterfaceTable 06h, Reg

Seite 65

68 _____________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceTable 06h, Reg

Seite 66

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

Seite 67

_______________________________________________________________________________________ 7DS1876SFP Controller with Dual LDD InterfaceDIGITAL THERMO

Seite 68

8 ______________________________________________________________________________________DS1876SFP Controller with Dual LDD InterfaceNONVOLATILE ME

Seite 69 - SDA and SCL Pullup Resistors

_______________________________________________________________________________________ 9DS1876SFP Controller with Dual LDD Interface

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