UM0934 Datasheet, PDF (104/113 Pages) STMicroelectronics – ST7570 S-FSK power line networking System-on-Chip

MAC mode communication example
UM0934
The expected CMD_WriteDBConfirm local frame on the ST7570 TXD pin has the fields
represented as:
STX
Command
Length _Code
MIB Index
02h 09h 42h 01.00h
DATA
Local MAC Add
00.0C h
Init MAC Add
00. 00h
CHK
58.00h
10.1.2
Station2 (Server)
For a Server station, the local MAC address is usually NEW or within the range 001h and
(FIMA-1) (C00h as default value), while the initiator MAC address should be set equal to the
initiator (i.e. Client) local MAC address.
In this example:
● local MAC address = 001h
● initiator MAC address = C00h.
For station2 the CMD_WriteDBRequest is composed as:
STX
Command
Length _Code
MIB Index
02h 09h 41h 01.00h
DATA
Local MAC Add
01.00h
Init MAC Add
0 0.0C h
CHK
58.00h
And the expected CMD_ReadDBRequest from the ST7570 device:
STX
Command
Length _Code
MIB Index
02h 09h 42h 01.00h
DATA
Local MAC Add
01.00h
Init MAC Add
0 0.0C h
CHK
59.00h
10.2
Step 2: Server time-outs configuration
The MAC time-outs (Section 4.6) must be programmed to suitable values according to the
application requirements.
The factory default values are used in this example.
The factory default values are read through CMD_ReadDBRequest() (Figure 31) only to
show the of use of the command.
Figure 31. Host interface: MIB object reading command sequence
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Doc ID 17389 Rev 2