SM2400A-MQEQ-Y

SM2400A-MQEQ-Y Datasheet


SM2400

Part Datasheet
SM2400A-MQEQ-Y SM2400A-MQEQ-Y SM2400A-MQEQ-Y (pdf)
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SM2400

N-PLC Transceiver MultiStandard Narrowband Power Line Communication Modem

Product Overview

Communication technology by Semitech Semiconductor

The SM2400 is the ultimate Narrowband Power Line Communication N-PLC modem that combines cost effective design optimized for PLC applications with a high level of programmability to address a multitude of communications schemes and evolving standards. Extremely flexible, the SM2400 system-on chip SoC features a dual core architecture for dedicated PHY signal processing and MAC layer functionality to guarantee superior communication performance while maintaining very high levels of flexibility and programmability for OFDM-based and other open standards and fully customized implementations. It contains a high-speed 256bit AES-CCM* engine to ensure standard compliance and secure communication, and all the necessary mixed signal components, such as A/D, D/A, OpAmp’s, PGA to yield a cost effective PLC system design for any N- PLC application.

Dual core architecture with custom N-PLC optimized DSP and Data Link Layer 32bit controller

Supports a multitude of communication schemes via firmware loads

High performing custom DSP engine with embedded turnkey firmware featuring:

Configurable operational band within 5-500KHz range compliant with CENELEC, FCC and ARIB

OFDM and FSK/S-FSK modulations Compliant with IEEE PRIME, G3-PLC and CTIA/EIA709.2 Proprietary extra-robust operation modes XR, XXR Selectable differential and coherent BPSK, QPSK, 8PSK and coherent 16QAM modulations Configurable data rate up to 500kbps Programmable frequency notching to improve coexistence Jammer cancellation Adaptive tone mapping on-off sub-band bit loading FEC Convolutional, Reed-Salomon and Viterbi coding CRC16 Carrier RSSI, SNR and LQI indicators for best channel adaptation and L2/L3 metrics Zero-crossing detector

Programmable 32bit RISC protocol engine featuring Data Link Layer firmware options compliant with IEEE G3-PLC, PRIME, IEC61334-4-32 and others IP adaptation layers IPv4, 6LoWPAN Carrier Sense Multiple Access/Collision Avoidance CSMA/CA channel access Automatic Repeat Request ARQ Meshing and self-discovery mechanisms

CCM* with AES128 / AES256 encryption core

On-chip Peripheral Interfaces:

SPI slave / UART host i/f Up to 19 firmware controllable GPIO’s JTAG SPI master for external flash Up to 2 additional SPI slaves for metering, wireless transceiver or other devices

Seamless interface to an external line driver for optimal system performance Integrated A/D and D/A Integrated OpAmp’s for RX and TX Integrated PGA

Low power operation modes Offline mode Listen mode Receive mode Transmit mode
3.3V 5V tolerant digital I/O Receiver sensitivity of -80dBV -40 °C to +105 °C temperature range LQFP64 package

Single-chip modem with integrating Physical Layer PHY and Media Access Controller MAC Multitude of operation modes addressing all common OFDM-based standards including full compliance with IEEE

G3-PLC, PRIME Extremely robust proprietary modes of communication optimized for noisy power line environment High flexibility to address standard evolution, new standards and special proprietary modes Cost optimized system solution with integrated A/D, D/A, 2 OpAmp’s, PGA Low power consumption

Smart grid communication Advanced Metering Infrastructure AMI Automated Meter Reading AMR Street lighting control Solar and alternative energy management Smart home energy monitoring Building automation BA Supervisory Control And Data Acquisition SCADA

Figure SM2400 N-PLC Transceiver

The SM2400 is a highly programmable OFDM based N-PLC modem combining PHY, MAC with mixed signal components for optimal system cost and performance. The SM2400 combines the benefits of programmable architecture with power and cost efficiency by utilizing two 32bit cores configured specifically for N-PLC modulations and protocols. The SM2400 comes with a set of firmware bundles implementing IEEE compliant PHY and MAC layers, a 6LoWPAN data link layer as well as PRIME, G3-PLC, FSK/BPSK, and other special modes tailored for smart metering and smart grid applications. The SM2400 is capable of achieving data rates of up to 500Kbps over 500KHz frequency band. Proprietary and patented modes XXR and XR modes enable robust communication in harsh conditions for applications where standards compliance is not required. The SM2400 enables secure communication featuring a 256-bit AES encryption core with CCM* mode support. Integrated analog front end featuring ADC, DAC, gain control and two OpAmp's allows for a very efficient system design with a low cost BOM. The SM2400 executes its firmware from internal memory. The code is loaded at the boot time. The SM2400 can boot ether from an external SPI flash or from a host CPU, if such is present in the system, via UART or SPI, where the MCU is the master.

Typical Application Diagram

Figure SM2400 Application Block Diagram

Block Diagram

Figure SM2400 Block Diagram

Modem

Selectable Modes and Modulations The SM2400 can be configured to operate in one of several modes, such as IEEE G3-PLC, PRIME,XR, XXR, etc. Different modes require different firmware images and imply different operational frequency bands with a varying number of carriers. The SM2400 allows for configurable modulations per carrier. While most configurations are implied by the different standards, special modes can be created using specific combinations of carriers and modulations to achieve best performance in given channel conditions. The following modulations are available Differential and coherent BPSK, QPSK and 8PSK and coherent 16QAM. Forward Error Correction The SM2400 supports Reed-Solomon 255,239 and 255,247 , and rate half Convolutional coding with constraint length 7 generator polynomial is In G3-PLC and IEEE modes Convolutional coding is concatenated with RS to achieve the best reliability. Special error correction modes include extra repetition coding for increased robustness and puncturing for increased data rate on capable channels. Communication Medium Metrics The SM2400 provides several metrics to assist L2 and L3 channel adaptation and routing. These metrics are RSSI, SNR and LQI, which is a measure of the data rate. The RSSI is an estimate of received signal strength. Each packet received can be interrogated for its estimated signal strength. This is very useful in determining the signal to noise ratio of different nodes in the network. Even in low line noise conditions in a particular band the signal level might be attenuated significantly making data transmission unreliable. Network management systems can also interrogate each node for signal to noise ratios and create a database of all transmission path conditions. This produces a deterministic way of identifying the need for where repeaters in difficult and dynamically changing environments. Security AES encryption engine conforms to FIPS 197 standard featuring CCM*, ECB, CBC, CTR modes and of up to 256 bit key size.

Zero-crossing Detector

The SM2400 has a zero-crossing input pin which takes signals generated by an external zero-crossing detector based on the transition through zero volts of a 50Hz or 60Hz sinusoidal on the power line. The SM2400 provides a phase detection feature allowing the transmission beginning at an arbitrary phase offset and measuring the phase offset of the received packet.

Analog Front End AFE

The SM2400 integrates an AFE optimized for N-PLC communication, which includes ADC, DAC, PGA and 2 OpAmp’s to achieve the best signal power with minimum external BOM. External components include coupling circuitry and high voltage line driver that can vary for different applications and for different operational bands.

Peripheral Interfaces

The SM2400 includes several peripheral interfaces for adding optional components. Those interfaces include UART, SPI master for external flash interface and JTAG. The second SPI extends to two additional devices that can be used for telemetry or to interface to a wireless transceiver.

Boot Options

The SM2400 can be configured to boot in one of four ways:

Table Boot Options

Boot Mode SPI Master CI SPI Slave CI UART Reserved

MODE[2:0] "000" "001"
"010" "1xx"

Read and process valid bootsector from SPI Master SSb0
For more information regarding the SM2400 including application notes, product samples, demonstration modules, pricing and ordering please contact Adesto Technologies

Communication technology by Semitech Semiconductor

Corporate Office

California | USA Adesto Headquarters 1250 Borregas Avenue Sunnyvale, CA 94089 Phone +1 Email:
and the Adesto logo,are registered trademarks or trademarks of Adesto Technologies. All other marks are the property of their respective owners.

Disclaimer Adesto Technologies Corporation makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Adesto's Terms and Conditions located on the Company's web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Adesto are granted by the Company in connection with the sale of Adesto products, expressly or by implication. Adesto's products are not authorized for use as critical components in life support devices or systems.
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Datasheet ID: SM2400A-MQEQ-Y 515479