L9945TR datasheet(45/151 Pages) STMICROELECTRONICS

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5.10

SPI MOSI/MISO list

The following paragraph contains the SPI MOSI and MISO list. Each frame consists of 32 bits with odd parity.

Protocol is out of frame. The following table contains links to SPI commands that can be sent on MOSI line, along

with their description. The corresponding answers issued by L9945 on MISO line are also described and linked on

the right columns.

Note:

All MISO default values have been scanned performing read only requests ("R/W" = 1).

Table 30. SPI MOSI list

MOSI

Request

Answer

MISO

COMMAND 0

Spread spectrum and diagnostic enable,OUT1-8

control, input selection and protection disable

Spread spectrum and diagnostic enable, input

selection, protection disable and output voltage

status

RESPONSE 0

COMMAND 1 OUT1 configuration and H-Bridge 1 diagnostic time

OUT1 configuration and H-Bridge 1 diagnostic time

RESPONSE 1

COMMAND 2

OUT2 configuration, H-Bridge 1 current limitation

timing, BCF selection

OUT2 configuration, H-Bridge 1 current limitation

timing, BCF selection

RESPONSE 2

COMMAND 3

OUT3 configuration, H-Bridge 1 current limitation

enable and active freewheeling, gate charge/

discharge current override

OUT3 configuration, H-Bridge 1 current limitation

enable and active freewheeling, gate charge/

discharge current override

RESPONSE 3

COMMAND 4

OUT4 configuration, P&H1 configuration, H-Bridge 1

enable

OUT4 configuration, P&H1 configuration, H-Bridge 1

enable

RESPONSE 4

COMMAND 5 OUT 5 configuration and H-Bridge 2 diagnostic time

OUT 5 configuration and H-Bridge 2 diagnostic time

RESPONSE 5

COMMAND 6

OUT6 configuration, H-Bridge 2 current limitation

timing

OUT6 configuration, H-Bridge 2 current limitation

timing

RESPONSE 6

COMMAND 7

OUT7 configuration, H-Bridge 2 current limitation

enable and active freewheeling

OUT7 configuration, H-Bridge 2 current limitation

enable and active freewheeling

RESPONSE 7

COMMAND 8

OUT8 configuration, P&H2 configuration, H-Bridge 2

enable

OUT8 configuration, P&H2 configuration, H-Bridge 2

enable

RESPONSE 8

COMMAND 9 Diagnostic read and diagnostic pulses

H-Bridge1-2 current limitation latches and channels

diagnostic status

RESPONSE 9

COMMAND 10 BIST request and CC enable

BIST & HWSC result and device status

RESPONSE 10

COMMAND 11 Channel 1-4 control signal integrity

Channel 1-4 control signal integrity

RESPONSE 11

COMMAND 12 Channel 5-8 control signal integrity

Channel 5-8 control signal integrity

RESPONSE 12

COMMAND 13 Device status, battery and temperature monitor

Device status, battery and temperature monitor

RESPONSE 13

Note:

ΔT = TjFET: Tj

TjFET = junction temperature of the external FET

Tj = junction temperature of L9945.

L9945

SPI MOSI/MISO list

DS12275 - Rev 8

page 45/151

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