MLX16303 View Datasheet(PDF) - Melexis Microelectronic Systems

Part Name

Description

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MLX16303

Bi-directional Remote Sensor Unit Interface

Melexis Microelectronic Systems  

MLX16303

Bi-directional Remote Sensor Unit Interface

(all the bits are set to ‘1‘). The CMD_DIAG1 is only possible in normal mode.

If the CMD_DIAG1 is sent when the channel is off, the last status of the channel when it was on is replied.

The diagnosis bits cannot change in off state even if an error appears (except for the bit DB4, over

temperature bit, which represents the temperature status).

Command

MSB

LSB

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

0 0 0 0 0 0 0 0 0 0 0 0 CS CMD_DIAG

Bit

CMD_DIAG

CS

Function

Bit2

Bit1

Bit0

0

1

0

Select the channel

0: Channel 0 selected

1: Channel 1 selected

Answer

MSB

LSB

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 CMD_BYTE

Bit

CMD_BYTE

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

Function

Reflected lower byte

0: IOUTx OK

1: IOUTx to high

0: IOUTx OK

1: IOUTx to low

0: VOUTx OK

1: VOUTx to high

0: VRETx OK

1: VRETx to high

0: no fault

1: fault Over temperature

(both channels are turned off)

0: Channel is on

1: Channel switched off

0

0

CMD_DIAG2

Request of the actual diagnosis result of the bi-directional remote unit interface IC after an error has

occurred, the channel was switched off and the exact errortyp (checked with CMD_DIAG1) is still unclear.

3901016303

Rev. 004

Page 15 of 20

Data Sheet

Jun/04

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