TLE7250X Datasheet, PDF (10/34 Pages) Infineon Technologies AG – High Speed CAN-Transceiver

TLE7250XLE
TLE7250XSJ
Functional Description
4.2
Modes of Operation
The TLE7250X supports two different modes of operation, receive-only mode and normal-operating mode while
the transceiver is supplied according to the specified functional range. The mode of operation is selected by the
RM input pin (see Figure 4).
V_CC > V_CC(UV)
V_IO > V_IO(UV,R)
receive-only mode
RM = 1
RM = 0
RM = 1
V_CC > V_CC(UV,R)
V_IO > V_IO(UV,R)
normal-operating
mode
RM = 0
Figure 4 Mode state diagram
4.2.1 Normal-operating Mode
In normal-operating mode the transmitter and the receiver of the HS CAN transceiver TLE7250X are active (see
Figure 1). The HS CAN transceiver sends the serial data stream on the TxD input pin to the CAN bus. The data
on the CAN bus is displayed at the RxD pin simultaneously. A logical “low” signal on the RM pin selects the normal-
operating mode, while the transceiver is supplied by V_CC and V_IO (see Table 2 for details).
4.2.2 Receive-only Mode
In receive-only mode the normal-mode receiver is active and the transmitter is turned off. The TLE7250X can
receive data from the HS CAN bus, but cannot send any data to the HS CAN bus.
A logical “high” signal on the RM pin selects the receive-only mode, while the transceiver is supplied by V_CC and
V_IO (see Table 2 for details).
Data Sheet
10
Rev. 1.0, 2015-08-12