UM0932 datasheet(8/43 Pages) STMICROELECTRONICS

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Functional overview

UM0932

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DocID17385 Rev 3

Functional overview

The ST7580 device provides to the external host a complete physical layer (PHY) and some

data link layer (DL) services for power line communication. It is mainly developed for smart

metering applications in CENELEC A band, but suitable also for other control applications

and remote load management in CENELEC B band.

A UART host interface is available for communication with an external host, exporting all the

functions and services required to configure and control the device and its protocol stack.

2.1

Protocol stack

Below is a list of the protocol layers and functions embedded in the ST7580:



Physical (PHY) layer: hosted in the PHY processor, implements two different

modulation schemes for communication through power line: 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.



Data link (DL) layer: the embedded DL layer hosted in the protocol controller offers

framing and error correction services. A further security service (SS) based on 128-bit

AES algorithm is also available for crypting / decrypting frames.



Management information base (MIB): an information database with the data required

for proper configuration of the system.



Host interface: all of the services of the PHY, DL and MIB are exported to an external

host through the local UART port.

Figure 1. Functional overview

UM0932 Datasheet(PDF) 8 Page - STMicroelectronics