UM0934 datasheet(104/113 Pages) STMICROELECTRONICS

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MAC mode communication example

UM0934

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Doc ID 17389 Rev 2

The expected CMD_WriteDBConfirm local frame on the ST7570 TXD pin has the fields

represented as:

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:

And the expected CMD_ReadDBRequest from the ST7570 device:

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

STX Length

Command

Co de

DATA

CHK

MIB Index

Init MAC Add

Local MAC Add

00.0Ch

STX Length

Command

Co de

DATA

CHK

MIB Index

Init MAC Add

Local MAC Add

01.00h

STX Length

Command

Co de

DATA

CHK

MIB Index

Init MAC Add

Local MAC Add

01.00h

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