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AN4068

ST7580 power line networking system-on-chip description

Doc ID 022923 Rev 2

11/63

ST7580 power line networking system-on-chip

description

The ST7580 is a flexible power line networking system-on-chip (SOC) combining a high

performing PHY DSP core and a protocol controller core 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.

The device comes with embedded firmware providing a complete physical layer (PHY) and

some data link layer (DL) services for power line communication. The ST7580 protocol

services have been developed mainly for smart metering applications using CENELEC A

band, but they are also suitable for other command and control applications.

The embedded PHY layer, hosted in a DSP engine, implements two different modulation

schemes: a B-FSK modulation up to 9.6 kbps and a multi-mode PSK modulation with

channel quality estimation, dual channel receiving mode and convolutional coding,

delivering a throughput up to 28.8 kbps.

The embedded DL layer hosted in the embedded microcontroller offers framing and error

correction services.

Communication with an external microcontroller is based on a UART host interface,

exporting all the functions and services required to configure and control the device and its

protocol stack.

For further details, please refer to [1] and [2].

Figure 2.

ST7580 block diagram

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