Optical Microcontroller

The DS4830 provides a complete optical control, calibration, and monitor solution based on a low-power, 16-bit, microcontroller core, providing program and RAM data memory. I/O resources include a fast/accurate analog-to-digital converter (ADC), fast comparators with an internal comparison digital-to-analog converter (DAC), 12-bit DACs, 12-bit PWMs, internal and external temperature sensors, fast sample/hold, I2C slave host interface, and a multiprotocol serial master/slave interface.

Direct connection of diode-connected transistors, used as remote temperature sensors, is supported as well as expansion to additional external digital temperature sensor ICs using the on-chip master I2C interface. An independent slave I2C interface facilitates communication to a host microprocessor in addition to password-protected in-system reprogramming of the on-chip flash.

Firmware development is supported by third-party highly versatile C-compilers and development software that programs flash and performs in-circuit debug through the integrated JTAG interface and associated hardware.

Applications

* Optical Transceivers: XFP, SFP, SFP+, QSFP, 40G, 100G * PON Diplexers and Triplexers: GPON, 10GEPON, XPON OLT, ONU

* 16-Bit Low-Power Microcontroller

* 36 kWords Total Program Memory

* 32 kWords Flash Program Memory

* 4 kWords ROM Program Memory

* 1 kWords Data RAM

* 8 DAC Channels

* 12-Bit Buffered Voltage DACs

* Internal or External Reference

* 10 PWM Channels

* Boost/Buck DC-DC Control with Support for 7-Bit to 12-Bit Resolution and 1MHz Switching Frequency

* Supports 4-Channel TECC H-Bridge Control

* 8-Bit Fast Comparator with 16-Input Mux

* 1.6µs per Comparison

* 13-Bit A/D Converter with 26-Input Mux (27ksps)

* Temperature Measurement Analog Front-End

* Internal Temperature Sensor, &plusnm;3°C

* 0.0625°C Resolution

* Supports Two External Temperature Sensors

* Differential Rail-Rail Inputs

* 31 GPIO Pins

* Maskable Interrupt Sources

* Internal 20MHz Oscillator, CPU Core Frequency 10MHz

* 4% Accurate from 0°C to +50°C

* Up to 133MHz External Clock for PWM and Timers

* Slave Communication Interface: SPI or 400kHz I2C-Compatible 2-Wire

* Master Communication Interface: SPI, 400kHz I2C-Compatible, or Maxim 3-Wire Laser Driver

* I2C and JTAG Bootloader

* Two 16-Bit Timers

* 2.97V to 3.63V Operating Voltage Range

* Brownout Monitor

* JTAG Port with In-System Debug and Programming

* Low Power Consumption (16mA) with All Analog Active