TLE9252V datasheet(13/50 Pages) INFINEON

13 / 50 page

Data Sheet

Rev. 1.01

2018-01-09

TLE9252V

High-Speed CAN FD Transceiver

Modes of operation

5.2

Receive-only Mode

In Receive-only Mode the transmitter is disabled and the receiver is enabled. The TLE9252V can receive data

from the HS CAN bus, but cannot transmit data to the HS CAN bus.

• The transmitter is disabled and the data available on the TxD input is blocked.

• The receiver is active and converts the signals from the bus to a serial data stream on the RxD output pin.

• The bus biasing is connected to VCC/2.

• The TxD time-out function is disabled.

• The RxD Recessive Clamping detection is disabled.

• The overtemperature protection is disabled.

• The undervoltage detection on VBAT, VCC and VIO is enabled (see Chapter 6.2).

• The INH output pin is connected to VBAT.

• The Local Wake-Up pin is disabled.

• The Power-up flag is signalled at the pin NERR when coming from Standby, Sleep or Go-to Sleep Command

mode.

•The VCC undervoltage detection is active and an undervoltage is indicated at the NERR output pin when

coming from Normal-operating Mode (see Chapter 7).

Conditions for Entering Receive-only Mode:

The TLE9252V enters Receive-only Mode by setting the mode selection pin EN to logical “low” and the NSTB

to logical “high” (see Figure 4 and Table 2). Receive-only Mode can only be entered if VBAT or VCC is in the

functional range and the reference voltage VIO is in the functional range.

Possible mode changes are described in Figure 6.

Figure 6

Mode changes in Receive-only Mode

Sleep Mode

Go-to-Sleep

Command

Stand-by Mode

Normal-

operating Mode

Go-to-Sleep

Command

Stand-by Mode

Normal-

operating Mode

Receive-only

Mode

EN = 0

NSTB = 1

INH = „ON“

EN = 0

NSTB -> 1

EN -> 0

NSTB -> 1

EN -> 1

NSTB -> 0

EN -> 1

NSTB = 1

EN -> 0

NSTB = 1

EN = 0

NSTB -> 1

EN = 0

NSTB -> 0

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