AMIS-49587_15 Datasheet, PDF (52/56 Pages) ON Semiconductor – Power Line Carrier Modem

AMIS−49587
The Synchro_Data field contains a synchronization event description of 1 or 2 bytes with accompanying data.
Table 50. Synchro_Data FIELDS
Event Description, byte 1
Event Description, byte 2
0x01
Synchronization Found
0x02
Synchronization Confirmed
0x04
Synchronization Lost
0x04
Synchronization Lost
0x04
Synchronization Lost
0x04
Synchronization Lost
0x04
Synchronization Lost
0x04
Synchronization Lost
0x01
Time−out not addressed has
expired
0x02
Time−out frame not OK has
expired
0x03
Time−out synchro confirm has
expired
0x04
Addressed by a wrong initiator
0x05
External desynchro command
0x06
Search Initiator active
Length and Synchro_data Description
1 byte: Pad
2 bytes: Signal S0
2 bytes: Noise N0
2 bytes: Signal S1
2 bytes: Noise N1
2 bytes: ASK Threshold or FSK factor
1 byte : Method
1 byte : Synchro−Bit and Gain values
1 byte: Pad
2 bytes: Source MAC Address
2 bytes: Destination MAC Address
2 bytes: Local MAC Add
2 bytes: Initiator MAC Add
2 bytes: Local MAC Add
2 bytes: Initiator MAC Add
2 bytes: Local MAC Add
2 bytes: Initiator MAC Add
2 bytes: Source MAC Add
2 bytes: Dest. MAC Add
2 bytes: Local MAC Add
2 bytes: Initiator MAC Add
2 bytes: Last initiator MAC Address received
2 bytes: Current initiator MAC Address
choice
Remark
Slave mode
Master and Slave
mode
Master and Slave
mode
Slave mode
Master and Slave
mode
Slave mode
7.4.12 Desynchro_Request
External CPU
AMIS4958x
Command
Interpreter
SLAVE ONLY
DeSynchro_request(0x11)
Figure 38. Sequence Diagram for DeSynchro_Request
The Desynchro_Request command is used by the external controller to enforce the not synchronized state in the
AMIS−49587 and therefore it starts looking for a new synchronization.
Frame Format:
<STX> 0x03 (Length)
0x11 (Desynchro_Request)
CHK
7.4.13 AccessDB_Request
Field Name
PhyAlarmRequest
Ident
000F
Description
Request the transmission of a Phy Alarm
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