原标题：ST ST7590 OFDM窄带动力线网络系统开发方案

　　ST公司的ST7590是首个窄带OFDM动力线通信系统极芯片(SoC),具有嵌入了OFDM调制的高性能DSP引擎,可编比特率高达128kps,器件集成了多种外设和128位AES加密硬件区块,模拟前端和动力线驱动器,主要用在PRIME兼容的智能电表和智能电网.本文介绍了ST7590主要特性,框图,两个应用案例,以及评估板EVALST7590T-2主要特性,框图,电路图和材料清单.

　　ST7590 is the first complete Narrowband OFDM power line communication system-on-chip made using a multi-power technology with state of the art VLSI CMOS lithography. The ST7590 is based on dual core architecture to assure outstanding communication performance with a very high level of flexibility and programmability for either open standard or fully customized implementations.

　　ST7590主要特性:

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

　　■ High performing DSP engine with embedded turn-key firmware for Orthogonal frequency division multiplexing (OFDM) modulation, featuring:

　　– 96 sub-carriers in CENELEC A band

　　– BDPSK, QDPSK, 8DPSK programmable modulations

　　– Programmable bit rate up to 128 kbps

　　– Convolutional coding and Viterbi decoding

　　– Signal to noise ratio and channel quality estimation

　　– Full PRIME compliant PHY

　　■ On chip peripherals:

　　– Host controller UART/SPI interface

　　– I2C/SPI external data memory interface

　　– High speed SRAM controller for optional external SRAM program code execution

　　– Watchdog timer

　　■ On chip 128 bit AES encryption HW block

　　■ Fully integrated analog front end:

　　– ADC and DAC

　　– High sensitivity receiver

　　– High linearity transmitter with intelligent gain control

　　■ Fully integrated power line driver

　　– Up to 1 Arms, 14 Vpp single ended

　　– Configurable active filtering topology

　　– Ultra low distortion

　　– Embedded temperature sensor

　　– Current control

　　■ 3.3 V or 5 V I/O digital I/O supply

　　■ Integrated 5 V and 1.8 V linear regulators for AFE and digital core supply

　　■ 8 V to 18 V line driver power supply

　　■ Suitable for applications compliant with EN50065 and FCC part 15 specifications

　　■ -40 ℃to +85 ℃temperature range

　　■ QFN48 7x7 (ST7590) and TQFP 100 14x14 (ST7590T) exposed pad package options

　　ST7590应用:

　　PRIME compliant smart metering and smart grid applications.

　　图1. ST7590框图

　　图2. ST7590 TQEP100 128Kb外接存储器应用案例

　　图3. ST7590 QFN48应用案例

　　评估板EVALST7590T-2

　　Based on the ST7590 powerline communication system-on-chip, the EVALST7590T-2 development kit embeds all the functions required for a turnkey powerline communication network: the PLC node is based on the ST7590T device, the AC power supply is based on the ALTAIR4-900 SMPS controller and the STM32F103RG microcontroller, to either control the system as a standalone application or to connect the EVALST7590T-2 to an external host.

　　The EVALST7590T-2 embeds ST’s full PRIME-compliant protocol stack and provides a complete reference for PRIME-based applications such as smart meters or concentrators, and is an ideal standalone tool for in-field PRIME network tests.

　　The EVALST7590T-2 kit supports DLMS/COSEM libraries and has been jointly developed by ST and Fideltronik to accelerate high-volume industrial implementation and customization, as well as to provide ready and customizable solutions for any special, low-volume application.

　　评估板EVALST7590T-2主要特性:

　　PRIME-certified powerline communication development kit based on STarGRID™ ST7590T PLC SoC Complete and certified EN50065 compliant reference design for modular and integrated PRIME-based application development Onboard STM32F103RG microcontroller for system management and application host controller AC power supply based on the ALTAIR04-900 quasi-resonant current mode SMPS controller RS232 / RS485 host interface to STM32F103RG microcontroller with opto-couplers for double insulation Intuitive graphical user interface (GUI)

　　Suitable for CENELEC EN50065 and FCC part 15 compliant applications

　　图4.评估板EVALST7590T-2外形图

　　图5.评估板EVALST7590T-2框图

　　评估板EVALST7590T-2材料清单: