TLE7232G datasheet(22/36 Pages) INFINEON

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SPI Driver for Enhanced Relay Control

SPIDER - TLE 7232G

Diagnostic Features

Data Sheet

V1.0, 2005-09-30

4.3

Diagnostic Features

The SPI of SPIDER - TLE 7232G provides diagnosis information about the device and

about the load. There are following diagnosis flags implemented:

• The diagnosis information of the protective functions (flags CLn and Tn) of channel n

is latched in the diagnosis flag Pn.

• The open load diagnosis of channel n is latched in the diagnosis flag OLn.

• The short to gnd monitor information of channel n is latched in the diagnosis flag SGn.

All flags are cleared after a successful SPI transmission.

There is an output state monitor implemented in the device that indicates the switch state

of the device in register STA. Depending on the voltage level at input pin and protective

functions the bits are high or low.

Please see Figure 9 for details:

Figure 9

Block Diagram Diagnosis

OUTn

IDS(PD)

SGn

VDD

DS(SG)

IDS(SG)

diagnosis .emf

protective functions

CLn

SPI

MUX

OLn

VDS(OL)

CHn

OUTn

STA.

gate control

GND

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