UM0934 datasheet(33/113 Pages) STMICROELECTRONICS

Part #	UM0934

Description	ST7570 S-FSK power line networking System-on-Chip

PDF	113 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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33 / 113 page

UM0934

MAC layer

Doc ID 17389 Rev 2

33/113

Below is the expected behavior of the nodes:

●

Server A: as the link between the Client and this node is assumed to be good in this

example, the node receives the 4 valid frames (i.e. with valid FCS). It provides an

M_Data.Indication upon receipt of MAC frame CC=3. The following repetitions (CC=2,

CC=1, CC=0) are neglected.

●

REPEATER B: the link between the Client and this node is assumed to be noisy, with

the noise corrupting the reception of MAC frames marked with CC=3. This node

provides an M_Data.Indication upon receipt of MAC frame CC=2. The node joins the

repetitions by transmitting 2 frames with CC=1 and CC=0.

●

Server C: the link between the Client and this node is assumed to be noisy, with the

noise corrupting the reception of MAC frames marked with CC=3 and CC=2. This node

provides an M_Data.Indication upon receipt of MAC frame CC=1 coming from Server

B. The following repetition (CC=0) is neglected.

UM0934 Datasheet(PDF) 33 Page - STMicroelectronics