TLE8262E datasheet(80/93 Pages) INFINEON

80 / 93 page

Data Sheet

Rev. 1.0, 2009-03-31

TLE8262E

Serial Peripheral Interface

15.5.3.2 Limp Home failure encoder

Table 22 describes the encoding of all possible reason to activate automatically the Limp Home output. Bits are

set back to “000” when switching Limp Home off via SPI.

15.5.3.3 Test pin and failure to Limp Home configuration read out

The SBC allows to read the hardware setting of the configuration that is done via the INT pin, as well as the test

pin and the WD to LH bit. Table 23 describes the encoding of these informations.

Table 22

Limp Home Failure Diagnosis

LH2

LH1

LH0

Failure1)

No failure

cc1µC undervoltage Time-out

One Watchdog failure (config 1 and 2)

Two consecutive Watchdog failures (config 3 and 4)

INIT Mode Time-out

Temperature shutdown at

cc1µC

Reset clamped

Reserved

Table 23

Test pin and SBC Configuration

Test2

Test1

Test0

Test Read Out1)

1) Refer also to Chapter 4.2.1

cc1µC remains ON in SBC Restart Mode after one Watchdog failure (config 1)

cc1µC is OFF in SBC Fail-Safe Mode after one Watchdog failure (config 2)

cc1µC remains ON in SBC Restart Mode after two Watchdog failures (config 3)

cc1µC is OFF in SBC Fail-Safe Mode after two Watchdog failures (config 4)

Software Development Mode. In case of watchdog failure

cc1µC remains ON, no

reset is generated and Restart Mode or Fail-Safe Mode are not entered.

Software Development Mode. In case of watchdog failure

cc1µC remains ON, no

reset is generated and Restart Mode or Fail-Safe Mode are not entered.

Software Development Mode. In case of watchdog failure

cc1µC remains ON, no

reset is generated and Restart Mode or Fail-Safe Mode are not entered.

Software Development Mode. In case of watchdog failure

cc1µC remains ON, no

reset is generated and Restart Mode or Fail-Safe Mode are not entered.

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