1EDI2002AS datasheet(39/147 Pages) INFINEON

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EiceDRIVER

™ SIL

1EDI2002AS

Functional Description

Datasheet

Rev. 3.1, 2015-07-30

Hardware Description

2.4.5.6

Debug Mode

The DEBUG pin gives the possibility to operate the device in the so-called Debug Mode. The goal of the Debug

Mode is to operate the device without SPI interface. This mode should be used for development purpose only and

is not intended to be used in final applications.

At V

CC2 power-on, the level at pin DEBUG is latched. In case a High level is detected, the device enters the Debug

Mode. Bit SSTAT.DBG is then set.

In Debug Mode, the regular operation of the internal state machine is modified, so that the device can only enter

OPM3 or OPM4. As a result Modes OPM0, OPM1, OPM2, OPM5 and OPM6 are completely bypassed. In case

of a Reset event, the device goes to OPM3 (instead of OPM0). Besides, in Debug Mode, events leading normally

to an Event Class B are replaced an Event Class A, resulting in the activation of signal NFLTA. Event Class B are

therefore not generated by the device in Debug Mode (and signal NFLTB shall not be used).

It should be noted that the configuration of the device in Debug Mode corresponds to the default settings and can

not be changed (for example, the DESAT function is completely deactivated).

In Debug Mode, the operation of the device is otherwise similar to regular operation. It means in particular that the

signal EN/FEN has to be managed properly: when the device is in OPM3, a Low to High level transition has to be

applied to the device in order to enter OPM4 (Active Mode).

Note: Once it has been latched at power-on, the level on the pin DEBUG has no impact on the device until the next

power-on event on the secondary side.

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