AMIS-49587_P2 Datasheet, PDF (37/55 Pages) ON Semiconductor – Power Line Carrier Modem

AMIS--49587
Table 40. CONFIGURATION COMMANDS AND RESPONSES
Command
Reset_Request
Unsolicited*
no
Initiator
Application micro controller ()
Valid Command in Mode:
Master / Slave / Monitor/ Not
Set
Code
21h
WriteConfig_Request
no
Application micro controller
(Data_Config)
Master / Slave / Monitor/ Not 71h
Set
WriteConfig_Confirm
no
AMIS--49587 (Data_Config_Echo)
Master / Slave / Monitor/ Not 72h
Set
WriteConfig_Error
no
AMIS--49587 (Error_Code)
Master / Slave / Monitor/ Not 73h
Set
AccessDB_Request
no
Application micro controller
Master / Slave
41h
(DB_Data_Id)
AccessDB_Confirm
no
AMIS--49587 (DB_Data_Id_Echo)
Master / Slave
42h
AccessDB_Error
no
AMIS--49587 (Error_Code)
Master / Slave
43h
*An unsolicited message is a message that is originating from the AMIS--49587, based upon an AMIS--49587 internal event. The message
is not provoked by a prior command sent by the external processor.
The state diagram in Figure 30 shows how a PLC MODEM can be placed into one of the 4 main modes by issuing a
WriteConfig_Request message with accompanying configuration values. Most configuration parameters can be changed after
the MODEM is in a ‘set’ mode by the AccessDB_Request message. All settings can be undone by sending the Reset_Request
message.
7.3.1 Reset_Request
External CPU
AMIS4958x
Command
Interpreter
Reset_Request(0x21)
Mode is changed
to Not Set
Figure 31. Sequence Diagram for Reset_Request
Use the Reset_Request to bring the MODEM in a ‘NOT SET’ mode. No power line data transmission is possible; it is as
if the MODEM comes out of reset. The MODEM does only reply with the <ACK> (=0x06) character, no additional data is
sent from the MODEM.
<STX> 0x03 (Length)
0x21 (Reset_Request)
CHK
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