UM1811 datasheet(45/52 Pages) STMICROELECTRONICS

45 / 52 page

DocID026814 Rev 1

45/52

UM1811

Basic G3 operations

Any message in the trace window may be hovered over to see more details. The message

content may also be expanded in the trace window by clicking on the small cross on the left

side of the message (4).

Figure 34. Send PHY data from TX to RX

In the details of the PD_DATA.Indication message, the “Link Quality Indicator” and the

content of the payload received (either in hexadecimal or string format) can be found.

Note that the PHY layer could generate padding if the amount of data inserted doesn't reach

an acceptable length for the PHY block. This results in additional byte shown in the data

field of the PD-DATA.Indication message. Also note that there's a limit on the amount of data

that can be successfully sent, which is based on the modulation chosen. With the

modulation that allows the biggest amount of data to be sent, that limit is 239 bytes.

10.4

MAC layer data exchange

To be able to execute a MAC command, the Node 1 and 2 working modes need to be set to

the MAC mode, as explained in Section 6 on page 22.

Then, to be able to send data from one node to the other one, at least the powerline area

network ID and the short address must be configured for each device.

UM1811 データシート(PDF) 45 Page - STMicroelectronics