L99ASC03G datasheet(53/70 Pages) STMICROELECTRONICS

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L99ASC03G

ST-SPI Protocol

4.4.1

SPI Control Registers

Global status byte

Type:

GSBN

RSTB

SPIE

Reserved

Bit Bit description

[15] GSBN: GlobaleStatusByte Not

The GSBN bit is a logically NOR combination of Bit 8 to Bit 14. This bit can also be used as

Global Status Flag

without starting a complete communication frame, as it is present at SDO

immediately after pulling CSN low.

[14] RSTB: Reset Bit

The RSTB bit indicates a device POR. In case this bit is set, all internal Control Registers are

set to default and kept in that state until the bit is cleared. It is automatically cleared by any valid

SPI communication.

[13] SPIE: SPI Error

The SPIE bit is a logical OR combination of errors related to a wrong SPI communication

(wrong SCK count, CSN time-out and SDI stuck at errors). The SPIE is automatically cleared by

a valid SPI communication.

[12] Reserved

[11] FE: Functional Error

The FE bit is a logical OR combination of errors caused by specific events. Functional errors

turn into sink mode all or specific gate driver blocks.

[10] DE: Device Error

The DE bit is a logical OR combination of errors related to device specific blocks. Device Errors

lead to the turn-off of specific functional blocks.

[9] GW: Global Warning

The GW bit is a logical OR combination of warning flags implemented in the device. Warning do

not have any effects at all on the device.

[8] FS: Fail Safe

The FS bit is a logical OR combination of errors caused by specific events. Fail-safe Errors lead

to the turn-off of specific functional blocks. All Device Control Registers are set to their default

values, except Device Control Register 1 and DSFT_DIS bit.

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