L9918 datasheet(39/109 Pages) STMICROELECTRONICS

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BV8

EXC8

DCE8

F_M:

Diagnosis flag for mechanical failure, 1 bit

F_E:

Diagnosis flag for electrical failure, 1 bit

F_L1:

Diagnosis flag for LIN error, 1 bit

F_L0:

Diagnosis flag LIN communication timeout, 1 bit

F_T:

Diagnosis flag for thermal fault, 1 bit

Bits answered as “dominant”, 3 bits

BV8:

Voltage measure on B+ pin, 8 bits

EXC8:

Excitation current measure, 8 bits

DCE8:

Excitation duty cycle measure, 8 bits

5.3.3.3

Tx Frame 2 version-C

Table 21. Identifier: 0x18 (LIN)

Byte 0

Byte 1

TJ8

AltS

AltI

TJ8:

Junction temperature measure, 8 bits

AltS:

Alternator supplier identification, 3 bits (REF: Table 34)

AltI:

Alternator identification, 5 bits (defined by customer)

5.3.4

Message frame for configuration version-D

5.3.4.1

Rx Frame version-D

Table 22. Identifiers: 0x29 (LIN1), 0x2A (LIN2)

Byte 0

Byte 1

Byte 2

Byte 3

A6:

Setpoint (VBSPLINRG), 6 bits

B1:

LRC-Rise, 4 bits

C1:

LRC-Cut, 4 bits

D5:

Excitation Current Limitation, 5 bits

Don’t care bits, 11 bits

L9918

LIN Frames

DS13000 - Rev 2

page 39/109

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