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DS4830A：Optical Microcontroller

Advanced Optical µC Enables High-Performance MSA-Compliant SFP+, QSFP+, and PON-OLT Transceivers

The DS4830A is a low-power, 16-bit microcontroller with a unique peripheral set supporting optical applications that require high-resolution conversion of many analog signals and digital signal processing (DSP) of those signals, high-speed data communication to an external host, and ultra-low power dissipation. A wide variety of optical transceiver controller applications is supported without need of external circuitry, thereby minimizing cost and PCB area. Power dissipation and throughput are optimized through the use of a programmable round-robin analog-to-digital converter (ADC) and 10-bit fast comparator, which operate completely independently of the core and significantly relieve core overhead. A dual multiply/accumulate (MAC) is included to minimize interrupt service timing/design complexity. Ten 16-bit PWM channels are included to provide an unprecedented level of precision in digital power-control applications. The DS4830A provides a complete optical control, calibration, and monitor solution compatible with SFF-8472. Additional resources include a fast/accurate ADC, fast comparators with an internal comparison digital-to-analog converter (DAC), eight independent 12-bit DACs, an accurate internal temperature sensor, two fast sample/holds with various programmable options, and a multiprotocol serial master/slave interface. An independent, 400kHz-compliant, slave I2C interface with four configurable slave addresses facilitates communication to a host, in addition to password-protected in-system programming of the on-chip flash. Extensive design-in and applications support are available, including comprehensive user’s and programmer’s guides, complete reference designs with documented code, and in-depth application notes showing numerous code examples in both C and assembly language. Firmware development is supported by third-party vendors.

Key Features 16-Bit Low Power Microcontroller Slave Communication Interface: 400kHz without Clock Stretching I2C Compatible 2-Wire or SPI Master Communication Interface: 400kHz I²C-Compatible 2-Wire, SPI, or Maxim 3-Wire Laser Driver Pin-Compatible with DS4830 32KWords Flash Program Memory 2KWords Data RAM 4KWords ROM Memory 32-Level Stack Memory 2.85V to 3.63V Operating Voltage Range 8 Independent 12-Bit Voltage DACs with 2.5V Internal Reference or External Reference 10 x 16-Bit PWM Channels Supports 4-Channel TECC H-Bridge Control Boost/Buck DC-DC Control 1MHz Switching Frequency 13-Bit ADC with 26-Input Mux 40ksps Individual Channel Averaging Option Two Independent Sample/Holds with Individual Channel Averaging Option 1V Full Scale 300ns Sample Time Fast Temperature Measurement with Averaging Option Internal Temperature Sensor, ±2°C 10-Bit Fast Comparator with 16 Input Mux 31 GPIO Pins Internal 20MHz Oscillator Up to 133MHz External Clock for PWM and Timers Two 16-Bit Timers and One Programmable Watchdog Timer Maskable Interrupt Sources Fast Hardware CRC-8 for Packet Error Checking (PEC) I2C and JTAG Bootloader Four Software Interrupts Supply Voltage Monitor (SVM) and Brownout Monitor JTAG Port with In-System Debug and Programming Low Power Consumption (16mA) with All Analog Active 5mm x 5mm, 40-Pin TQFN Package

DS4830A: Typical Operating Circuit Applications/Uses Optical Transceivers: XFP, SFP, SFP+, QSFP+, CSFP, 40G, 100G PON Diplexers and Triplexers: GPON, 10GEPON, XPON OLT, ONU

DataSheet

Parametrics

Quality and Environmental Data

• DS4830A.pdf

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