TLE8262E Datasheet, PDF (29/93 Pages) Infineon Technologies AG – Universal System Basis Chip HERMES Rev. 1.0

TLE8262E
8
High Speed CAN Transceiver
8.1
Block Description
High Speed CAN Transceiver
V_ccHSCAN
CANH
CANL
Output
Stage
Driver
Temp.-
Protection
V_{ccHS CAN}
SPI Mode
Control
+
timeout
VCC1µC
RTD
TxDCAN
To SPI diagnostic
RxD Diag
V_CC1µC
SPLIT
GND
R SPLIT
V SPLIT
Receiver
Vs
Wake
Receiver
MUX
R x D_CAN
Figure 10 Functional Block Diagram
can block .vsd
8.2
High-speed CAN Description
The Controller Area Network (CAN) transceiver part of the SBC provides high-speed (HS) differential mode data
transmission (up to 1 Mbaud) and reception in automotive and industrial applications. It works as an interface
between the CAN protocol controller and the physical bus lines compatible to ISO/DIS 11898-2 and 11898-5 as
well as SAE J2284.
The CAN transceiver offers low power modes to reduce current consumption. This supports networks with partially
powered down nodes. To support software diagnostic functions, a CAN Receive-only Mode is implemented.
It is designed to provide excellent passive behavior when the transceiver is switched off (mixed networks,
clamp15/30 applications).
A wake-up from the CAN Wake capable Mode is possible via a message on the bus. Thus, the microcontroller can
be powered down or idled and will be woken up by the CAN bus activities.
Refer to Figure 11 for a description of the matching of the transceiver modes with the SBC mode.
The CAN transceiver is designed to withstand the severe conditions of automotive applications and to support
12 V applications.
Data Sheet
29
Rev. 1.0, 2009-03-31