L9679P datasheet(146/272 Pages) STMICROELECTRONICS

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SPI interfaces

L9679P

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DocID029275 Rev 1

7.5

Remote sensor SPI tables

A summary of all the registers contained within the remote sensor SPI map are shown

below and are referenced throughout the specification as they apply. The SPI register tables

also specify the effect of the internal reset signals assertion on each bit field (the symbol ‘-‘is

used to indicate that the register is not affected by the relevant reset signal’).

7.5.1

Remote sensor SPI global status word

The Remote Sensor SPI of L9679P contains an 11-bit word that returns global status

information. The Global Status Word (GSW) of the Remote Sensor SPI is the most

significant 11 bits of MISO_RS data.

Table 9. GSW - Remote sensor SPI global status word

MISO_RS GSW

Name

POR

WSM SSM

Description

SPIFLT

SPI Fault, set if previous SPI frame had wrong parity check or

wrong number of bits, cleared upon read ‘

0 No fault

1 Fault

Unused

RSFLT

Remote Sensor Interface Fault Present, logical OR of the

corresponding FLTBIT bits (bit 15) for all faults but NODATA

0 All the RSDRx-FLTBIT bits are 0

1 At least one of the RSDRx-FLTBIT bits is 1 and the

associated fault code is different from NODATA

Unused

ERR_RI

Read address received in the actual SPI frame is unused so

data in the response is don't care

0 No Error

1 Error

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