L9945 datasheet(85/151 Pages) STMICROELECTRONICS

85 / 151 page

[11:9] TBLANK_OC_03: When DSM is selected, it specifies the OC blanking time to allow VDS settling. When Rshunt is selected, it

only determines the assertion of the 'No OC failure' diagnostic code (once expired).

000: 11.1 µs

001: 15.6 µs

010: 20 µs

011: 31.1 µs

100: 42.2 µs

101: 53.3 µs

110: 97.8 µs

111: 142.2 µs

Reset: 000

Reset Condition: POR, NRES

[8] PROT_CONFIG_03: Output re-engagement strategy. Specifies how channel reactivation must be performed following an OC

event

0: output re-engagement with control signal switching event

1: output re-engagement after diagnostic readout and control signal switching event

Reset: 0

Reset Condition: POR, NRES

[7] OC_DS_SHUNT_03: Configures the output measure OC with shunt or by DSM

0: OC with DSM

1: OC with Shunt

Reset: 0

Reset Condition: POR, NRES

[6] DIAG_I_CONFIG_03: CH3 OL regulator output current capability

0: 100 µA capability

1: 1 mA capability

Reset: 0

Reset Condition: POR, NRES

[5:4] GCC_CONFIG_03: Selection of gate charge/discharge currents

00: Lim by ext resistor

01: 20 mA

10: 5 mA

11: 1 mA

Reset: 00

Reset Condition: POR, NRES

[3] N_P_CONFIG_03: NMOS or PMOS option for HS configuration

0: LS configuration

1: HS configuration

Reset: 0

Reset Condition: POR, NRES

[2] LS_HS_CONFIG_03: Configures the channel as LS or HS

0: LS configuration

1: HS configuration

Reset: 0

Reset Condition: POR, NRES

L9945

SPI MOSI/MISO list

DS12275 - Rev 8

page 85/151

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