MLX16303
Bi-directional Remote Sensor Unit Interface
Bit
Function
CMD_BYTEꢀ
SC0ꢀ
Reflectedꢀlowerꢀbyteꢀofꢀtheꢀcommandꢀ
Statusꢀofꢀchannelꢀ0ꢀ
0:ꢀchannelꢀ0ꢀdeactivatedꢀ
1:ꢀchannelꢀ0ꢀactivatedꢀ
Statusꢀofꢀchannelꢀ1ꢀ
SC1ꢀ
0:ꢀchannelꢀ1ꢀdeactivatedꢀ
1:ꢀchannelꢀ1ꢀactivatedꢀ
CMD_PROG
Enables the communication to send data to the remote units (programming mode).
All other commands are not influenced by the status of the PM bit.
Command
MSB
15
LSB
0
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0ꢀ
0ꢀ
0ꢀ
1ꢀ
1ꢀ
0ꢀ
0ꢀ
0ꢀ
0ꢀ
1ꢀ
0ꢀ
0ꢀ
PMꢀ CMD_PROGꢀ
Bit
Function
CMD_PROGꢀ
PMꢀ
101ꢀbinaryꢀ
0:ꢀprogrammingꢀmodeꢀOFFꢀ
1:ꢀprogrammingꢀmodeꢀONꢀ
Answer
MSB
LSB
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0ꢀ
0ꢀ
0ꢀ
1ꢀ
1ꢀ
0ꢀ
0ꢀ
PMꢀ CMD_BYTEꢀ
Bit
Function
CMD_BYTEꢀ
PMꢀ
Reflectedꢀlowerꢀbyteꢀofꢀtheꢀcommandꢀ
Statusꢀaboutꢀtheꢀactualꢀprogrammingꢀmodeꢀstatusꢀ
The sent back bit PM can be set to ‘1‘ only if the supply for the programming mode (VP) is higher than
Vvp (9.2 Volts).
CMD_DIAG1
Request of the actual diagnosis result of the bi-directional remote unit interface IC. This means a copy of
the actual status after an error, generated by the continuous diagnosis in the bi-directional remote unit
interface IC, is answered back to the microcontroller. If an error is detected, the diagnosis affected bit is
memorized until the connected microcontroller has sent a CMD_ONOFF with the channel selected and
activated.
If the CMD is sent during the programming mode, the answer will be the same as for a wrong command
3901016303
Rev. 004
Page 14 of 20
Data Sheet
Jun/04
MELEXIS [ Melexis Microelectronic Systems ]
