ST ST7580动力线网络系统级芯片解决方案

发布时间：2012-6-7 12:24 发布者：1770309616

ST公司的ST7580是B-FSK, B-PSK, Q-PSK和8-PSK多模式动力线网络系统级芯片(SoC),集成了高性能PHY处理器核和协议控制器,全集成的模拟前端(AFE)和线路驱动器, B-FSK调制速率高达9.6 kbps,B-PSK, Q-PSK和8-PSK调制速率高达28.8 kbps,两路工作模式,主要用在智能计量,街灯照明控制以及指挥和控制网络.本文介绍了ST7580主要特性, 方框图, 功能系统框图以及ST7580动力线调制解调器演示板主要特性, 典型应用环境,电路图和材料清单.

The ST7580 is a flexible power line networking system-on-chip combining a high performing PHY processor core and a protocol controller with a fully integrated analog front end (AFE) and line driver for a scalable future-proof, cost effective, single chip, narrow-band power line communication solution.

Made using multi-power technology with state-of-the-art VLSI CMOS lithography, the ST7580 is based on dual digital core architecture (a PHY processor engine and a protocol controller core) to guarantee outstanding communication performance with a high level of flexibility for either open standards or customized implementations.

A HW 128-bit AES encryption block with customizable key management is available on chip when secure communication is requested.

The on-chip analog front end featuring analog to digital and digital to analog conversion,automatic gain control, plus the integrated power amplifier delivering up to 1 A RMS output current makes the ST7580 a unique system-on-chip for power line communication. Line coupling network design is also simplified, leading to a very low cost BOM. Robust and performing operations are guaranteed while keeping power consumption and signal distortion levels very low; this makes the ST7580 an ideal platform for the most stringent application requirements and regulatory standards compliance.

ST7580主要特性:

■ Fully integrated narrow-band power line networking system-on-chip

■ High-performing PHY processor with embedded turnkey firmware featuring:

– B-FSK modulation up to 9.6 kbps

– B-PSK, Q-PSK, 8-PSK modulations up to 28.8 kbps

– Dual channel operation mode

– Convolutional error correction coding

– Signal-to-noise ratio estimation

– B-PSK with PNA mode against impulsive noise

■ Protocol engine embedding turnkey communication protocol

– Framing service

– Error detection

– Sniffer functionality

■ Host controller UART interface up to 57.6 kbps

■ AES-128 based authentication and confidentiality services

■ Fully integrated analog front end:

– ADC and DAC

– Digital transmission level control

– PGA with automatic gain control

– High sensitivity receiver

■ Fully integrated single-ended power amplifier for line driving

– Up to 1 A RMS, 14 V p-p output

– Configurable active filtering topology

– Very high linearity

– Embedded temperature sensor

– Current control feature

■ 8 to 18 V power amplifier supply

■ 3.3 V or 5 V digital I/O supply

■ Zero crossing detection

■ Suitable for EN50065, FCC part 15 and ARIB compliant applications

■ Communication carrier frequency programmable up to 250 kHz

■ VFQFPN48 7x7x1.0 48L exposed pad package

■ -40 ℃ to +85 ℃ temperature range

ST7580应用:

■ Smart metering applications

■ Street lighting control

■ Command and control networking

图1. ST7580方框图

图2. ST7580功能系统框图

ST7580动力线调制解调器演示板

ST7580 power line modem demonstration kit graphical user interface (GUI)

The “ST7580 GUI” is a software tool that allows one or more ST power line modem (PLM)demonstration boards to be interfaced with a personal computer (PC). Only PLM demonstration boards equipped with the ST7580 device are supported.

When using the ST7580 GUI the user has complete control of the ST7580 device, having access to all its registers and functions described in [2].

The typical application environment consists of an ST7580 GUI running on a PC and communicating through a USB connection with a PLM demonstration kit equipped with the ST7580 product, such as the EVALKITST7580-1 (consisting of an EVALST7580-1 modem board and an EVLALTAIR900-M1 power supply board).

图3.ST7580典型应用环境

The ST7580 reference design has been realized as a useful tool that exploits the performance capability of the ST7580 power line networking system-on-chip. With this reference design, it is possible to evaluate, directly on the power line, the transmitting and receiving performance of a power line communication node based on the ST7580 device.

The line coupling interface is designed to allow the ST7580 device to transmit and receive on the AC mains line using the available FSK and PSK modes within the European CENELEC EN50065-1 standard A band, specified for automatic meter reading (AMR) applications [5]. The circuit has been designed to be easily adapted to different frequency bands and application environments with very few modifications.

An STM32 microcontroller has been included in the reference design to make it more flexible and suitable for use as a standalone smart PLC node.