L9779WD datasheet(155/170 Pages) STMICROELECTRONICS

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L9779WD

Functional description

169

Note: All diagnosis bit (including OT1, F1, OT2, F2) will be cleared automatically by reading

– i.e. if a diagnosis bits indicates a fault this fault has occurred after the last read

access to this register.

DIA_REG4:[7-6] OUT18_DIAG: Diagnosis bit of power stage OUT18

00: Short-circuit to ground (SCG)

01: Open load (OL)

10: Short-circuit to BAT (SCB)

11: Power stage OK

NO FAIL

DIA_REG4:[5-4] OUT17_DIAG: Diagnosis bit of power stage OUT17

00: Short-circuit to ground (SCG)

01: Open load (OL)

10: Short-circuit to BAT (SCB)

11: Power stage OK

NO FAIL

DIA_REG4:[3-2] OUT16_DIAG: Diagnosis bit of power stage OUT16

00: Short-circuit to ground (SCG)

01: Open load (OL)

10: Short-circuit to BAT (SCB)

11: Power stage OK

NO FAIL

DIA_REG4:[1-0] OUT15_DIAG: Diagnosis bit of power stage OUT15

00: Short-circuit to ground (SCG)

01: Open load (OL)

10: Short-circuit to BAT (SCB)

11: Power stage OK

NO FAIL

DIA_REG5:[7:4] RESERVED: All bit read 1

DIA_REG5:[3-2] OUT20_DIAG: Diagnosis bit of power stage OUT20

00: Short-circuit to ground (SCG)

01: Open load (OL)

10: Short-circuit to BAT (SCB)

11: Power stage OK

NO FAIL

DIA_REG5:[1-0] OUT19_DIAG: Diagnosis bit of power stage OUT19

00: Short-circuit to ground (SCG)

01: Open load (OL)

10: Short-circuit to BAT (SCB)

11: Power stage OK

NO FAIL

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