TLE8080EM

Serial Peripheral Interface (SPI)

Data Sheet

29

Rev. 1.1, 2012-10-19

Reset of the over current diagnosis bits of channels 1 and 3:

•

Diagnosis register was read out:

– input pin INx remains high: no reset of the over current diagnosis bit, the channel remains switched off

– input pin INx transition from high to low: the over current diagnosis bit is reset, the channel could be switched

on again

•

Diagnosis register was not read out

– channel remains switched off and no reset of the over current diagnosis bit is done

– input pin INx is low: with the next read access of the diagnosis register the diagnosis bits are reset

Reset of the over current diagnosis bits of channels 4 and 5:

•

Diagnosis register was not read out

– channel remains switched off and no reset of the over current diagnosis bit is done

•

Diagnosis register was read out:

– SPI command register write command is not sent: no reset of the over current diagnosis bit, the channel

remains switched off

– SPI command register write command is sent: the over current diagnosis bit is reset, the channel will be

switched according the status of the control bit

Set and Reset of the over current diagnosis bit of channel 2:

The over current diagnosis register bit for channel 2 is set asynchronously of the internal clock with the output

condition the channel will be switched on repetitively. This internal overcurrent status of the channel is latched

internally. The internal over current status is reset in two situations.

•

•

over current condition remains and the channel is switched off: the internal over current status is reset after

The reset of the over current diagnosis register bit for channel 2 is related to the internal over current status. In

Figure 14 and Figure 15 the behavior of the diagnosis with temporary and permanent over current condition is

drawn.