L9918 datasheet(35/109 Pages) STMICROELECTRONICS

35 / 109 page

Version

LIN CFG ID

Frame Type/#Bytes

Identifier Hex

Version F

LIN

Rx_F (4 bytes)

Tx_1F (2 bytes)

Tx_2F (8 bytes)

5.3.1

Message frame for configuration version-A

Next paragraphs provide a description of RX and TX frames available for each selectable LIN configuration.

Indexes reported into the tables are referred to the lists reported into the appendix of this document. These lists

provide a full view of all the values which can be sent or received by LIN communication.

For example: suppose in RX frame table the Setpoint (VBSPLINRG) is marked with “A6” signature. This means

that the complete list of all the selectable values is reported into “A6” table of the “Set point tables” appendix (see

Section A.2 ).

5.3.1.1

Rx Frame version-A

Table 12. Identifiers: 0x29 (LIN1), 0x2A (LIN2, LIN4), 0x20 (LIN3)

Byte 0

Byte 1

Byte 2

Byte 3

A6:

Setpoint (VBSPLINRG), 6 bits

Don’t care bits, 2bits

B1:

LRC-Rise, 4 bits

C1:

LRC-Cut, 4 bits

D5:

Excitation Current Limitation, 5 bits

Output selection for TxFrame_3/Byte 3, 3 bits

001: VBSPLINRG - Setpoint

010: VB+ - Voltage on B+

011: Tjunction - Junction Temperature

100: Alt. Rotation Speed - Rotation Speed

000/111: RX byte3 invalid

RX:

byte3 invalid means BZ, F and BI/BZ bits ignored

BZ:

LRC blind zone (feature enabled by TV_SPRUNG_EN NVM register), 1 bit

Setpoint limitation threshold for high temperature (delta), 3 bits

WB:

Value of this bit changes the proportional constant of the regulation loop (which can be switched between P_ANT

and P_ANT2). 1 bit (activity selectable by customer configuration).

5.3.1.2

Tx Frame 1 version-A

Table 13. Identifiers: 0x11 (LIN1), 0x13 (LIN2, LIN4), 0x15 (LIN3)

Byte 0

Byte 1

DCE5

EXC6

L9918

LIN Frames

DS13000 - Rev 2

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