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TLE7250X Datasheet, PDF (28/34 Pages) Infineon Technologies AG – High Speed CAN-Transceiver | |||
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TLE7250XLE
TLE7250XSJ
Application Information
8.3
Examples for Mode Changes
Changing the status on the RM input pin triggers a change of the operating mode, disregarding the actual signal
on the CANH, CANL and TxD pins (see also Chapter 4.2).
Mode changes are triggered by the RM pin, when the device TLE7250X is fully supplied. Setting the RM pin to
logical âlowâ changes the mode of operation to normal-operating mode:
⢠The mode change is executed independently of the signal on the HS CAN bus. The CANH, CANL inputs may
be either âdominantâ or ârecessiveâ. They can be also permanently shorted to GND or VCC.
⢠A mode change is performed independently of the signal on the TxD input. The TxD input may be either logical
âhighâ or âlowâ.
Analog to that, changing the RM input pin to logical âhighâ changes the mode of operation to the receive-only mode
independent on the signals at the CANH, CANL and TxD pins.
Note: In case the TxD signal is âlowâ setting the RM input pin to logical âlowâ changes the operating mode of the
device to normal-operating mode and drives a âdominantâ signal to the HS CAN bus.
Note: The TxD time-out is only effective in normal-operating mode. The TxD time-out timer starts when the
TLE7250X enters normal-operating mode and the TxD input is set to logical âlowâ.
Data Sheet
28
Rev. 1.0, 2015-08-12
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