L99MD02 datasheet(26/46 Pages) STMICROELECTRONICS

26 / 46 page

Functional description of the SPI

L99MD02

26/46

Doc ID 16082 Rev 5

The <Global Error Flag> is generated by an OR-combination of all failure events of the

device (i.e. Bit 0 to Bit 6 of the <Global Status Byte>).

Table 20.

Global status byte

Bit

Description

Polarity

Comment

Software reset or under/

overvoltage

Active high

Depend on bit 5 of <Global Status Byte>:

Overcurrent detected

Active high

Set by any overcurrent event

Open-load detected

Active high

Set by any open-load event

Temp warning

Active high

Thermal shutdown / chip overload

Active high

NOT (chip reset or communication

error)

Active low

Activated by all internal reset events that

change device state or configuration

registers (e.g. software reset, VCC under-

voltage, etc.). The bit will be set after a valid

communication with any register. This bit is

initially ‘0’ and will be set to ‘1’ by a valid

SPI communication

Communication error

Active high

Bit is set if the number of clock cycles

during CSN = low does not match with the

specified frame width or if an invalid bus

condition is detected (SDI stuck at 1 or 0).

Global error flag

Active high

Logic OR combination of all failures in the

<Global Status Byte>.

Bit 5

Bit 0

Set if software reset (SDI stuck

at 1 or 0)

Logical OR of the under- /

overvoltage status bits

L99MD02 Datasheet(PDF) 26 Page - STMicroelectronics

L99MD02 Datasheet(HTML) 26 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

Datasheet Descarga

Enlace URL