Maxim DS1884 SFP and PON ONU Controller

Maxim DS1884 is an SFP and PON ONU Controller with digital LDD interface. The device controls and monitors all functions for SFF, SFP, and SFP+ modules, including SFF-8472 functionality. Features of the DS1884 Controller from Maxim include modulation current control, APC set-point control with tracking error adjustment, and continuous monitoring of RSSI for LOS generation.

Features

Meets All SFF-8472 Control and Monitoring Requirements
Companion Controller for the MAX3710 Laser Driver/Limiting Amplifier and MAX3945 Limiting Amplifier
MAX3710/DS1884 Combination Supports Broad Spectrum of Continuous Mode and PON Applications Up to 2.5GHz
Temperature Lookup Table (LUT) to Compensate for APC Tracking Error and Dual Closed-Loop Variables
Three Laser Control Modes
Dual Closed Loop: Laser Bias and Laser Modulation Are Automatically Controlled with Multiple LUTs to Compensate Dual Closed-Loop Calibration Points
APC Loop: Laser Bias Automatically Controlled, Laser Modulation Controlled by Temperature LUT
Open Loop: Laser Bias and Laser Modulation Are Controlled by Temperature LUTs
13-Bit ADC
Laser Bias, Laser Power, and Receive Power Support Internal and External Calibration
Differential Receive Power Input
Scalable Dynamic Range
Internal Direct-to-Digital Temperature Sensor
Alarm and Warning Flags for All Monitored Channels
9-Bit DAC with Temperature Compensation for APD Bias
Digital I/O Pins: Transmit Disable Input/Output, Rate Select Input/Output, LOS Input/Output, Transmit Fault Input/Output, and IN1 Status Monitor and Fault input
Comprehensive Fault Measurement System with Maskable Alarm/Warnings
Flexible Password Scheme Provides Three Levels of Security
256-Byte A0h and 128-Byte Upper A2h EEPROM
I²C-Compatible Interface
3-Wire Master to Communicate with the MAX3710 Laser Driver/Limiting Amplifier and MAX3945 Limiting Amplifier