TLE9222 datasheet(13/43 Pages) INFINEON

13 / 43 page

Data Sheet

Rev. 1.0 2015-06-12

TLE9222

Functional Description

Figure 5

Mode control with the STBN input

The ERRN output is used to signal events detected by the TLE9222 to the host controller. Depending on the

provided host command, the ERRN output indicates errors or wake-up events, see Table 4. The TLE9222

reacts on and signals these events on the ERRN output within the time dReactionTimeERRN. Detailed

information about the detected events as given in Table 4 can be read out from the status register with the SPI

interface as described in Chapter 4.8.

Table 4

Signalling on the ERRN and RxD pins

STBN

ERRN RxD

Cause / Comment

Effect

BD_Normal mode

High

High /

Low1)

1) Depending on bus state; RxD “low” when Data_0 is detected, RxD “high” when Data_1 is detected or when bus is Idle

Default condition for BD_Normal mode –

High

Low

High /

Low1)

Bus error detected

–

Transmitter time-out detected

Transmitter disabled

Overtemperature event detected

Transmitter disabled

BGE input “low”

Transmitter disabled

SPI error detected

–

BD_Standby mode

Low

HighHighDefault condition for BD_Standby mode –

Low

Bus wake-up detected

–

High

Low

High

VCC undervoltage detected

Forced BD_Standby mode

X2)

2) X = “Don’t care”

Low

VIO undervoltage detected

Forced BD_Standby mode, logic inputs

follow default states (see Table 2)

SDO “high impedance”

BD_OFF condition

X2)

Low

uVCC below uBDPDVCC

–

TLE9222_MODE_CONTROL_V00

High

Low

BD_Normal mode

BD_Standby mode

70% VIO

30% VIO

uVDig_In_Low_STBN

uVDig_In_High_STBN

t < dBDLogicFilter

dBDLogicFilter

dBDModeChange

t < dBDLogicFilter

dBDLogicFilter

dBDModeChange

Mode transition

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