L9300 datasheet(136/178 Pages) STMICROELECTRONICS

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EXCEPTIONS

Exceptions

Address:

Channel_X_BaseAddress + 0x00

Type:

Reset:

0b0000 0000 0000 0000 0000

Description:

Exceptions Register packs information related to the driver status

The “behavior on exception” is conceived to avoid “automatic” driver restart after exception removal.

Action on exception consists in “TRISTATING” driver.

The driver operation can only be recovered by explicitly write DRVENA = 1.

GPOExc[5:0] and SPIExc[5:0] signals are generated by ORing exception bits.

NOTE: As monitors are working also during startup phases, when voltage levels can not be stable, it can happen that

some fault bit are set to “1” after POR. To avoid false diagnosis when the device is fully functional, it is suggested to

read this register once after the startup in order to clean it.

[19:16] unused

[15] T_WARN: Thermal Warning - Active high - Channel thermal sensor has exceeded “thermal warning threshold”.

0: no fault

1: Thermal warning

Reset events: POR, DATA READ

Actions on set: No actions related to this bit.

Behavior: Read operation would reset bit status if channel temperature is below “thermal warning threshold”.

[14] CRC error on CSA Compensation data:

0: No CRC Error.

1: CRC Error

Reset events: POR

[13] CRC error on A2D trimming bits:

0: No CRC Error

1: CRC Error

Reset events: POR

L9300

SPI interface and register mapping

DS12258 - Rev 5

page 136/178

L9300 bảng dữ liệu(PDF) 136 Page - STMicroelectronics