L99H92 datasheet(47/77 Pages) STMICROELECTRONICS

47 / 77 page

SPI registers

6.1

Global status byte GSB

Table 42. Global status byte GSB

Bit 23

Bit 22

Bit 21

Bit 20

Bit 19

Bit 18

Bit 17

Bit 16

1 (R)

0 (R)

GSBN

RSTB

SPIE

Global

status

bit not

ReSeT

bit

SPI error

Reserved bit

Functional error

Device error

Global warning

Fail-safe

Bit

Name

Description

GSBN

Global status bit not

The GSBN bit is a logically NOR combination of GSB bits from bit 16 to bit 22.

This bit can also be used as global error flag without starting a complete communication frame as it is

present at SDO after pulling CSN low.

0 = error detected (1 or several GSB bits from 16 to 22 are set)

1 = no error detected

RSTB

Reset bit

The RSTB bit indicates that all the device registers have been reset to default. By default it is set to one

coming out from standby mode. It is cleared automatically after any valid SPI communication frame.

SPIE

SPI error bit

The SPIE bit indicates errors related to any wrong SPI communication.

•

SPI CLK count error

•

Parity error

•

Read/Write to wrong address

•

SDI stuck at

•

CSN timeout

This bit is visible inside the communication frame following the not valid one. This bit is cleared automatically

by any valid SPI communication frame.

0 = no error (default)

1 = error detected

RES

Reserved

Functional error bit

The FE bit is a logical OR combination of errors coming from application specific functional blocks.

•

Overcurrent status flags (DSHSx, DSLSx)

0 = no error (default)

1 = error detected

The FE bit is cleared by a Read & Clear command of the overcurrent status flags.

Device error bit

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

•

VDH overvoltage status flag (VDHOV)

•

VDH undervoltage status flag (VDHUV)

•

VDD overvoltage status flag (VDDOV)

•

Thermal shutdown status flag (TSD)

•

Charge pump not ready status bit (NRDY)

•

Charge pump low status flag/bit (CPLOW)

•

Digital input/output over-voltage status flag (DIOOV)

L99H92

SPI registers

DS14069 - Rev 4

page 47/77

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