ETAS ES584.1, Руководство пользователя

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ES584.1 – User’s Guide 16
ETAS Hardware Description
3.4 Function Groups
bpRUQKN
CAN
LIN
CAN FD
Transceiver Controller
LIN
Transceiver
LIN
Controller
Microcontroller
LED
USB Interface
Isolation
USB 2.0
CAN FD / CAN
Fig. 3-2 ES584.1 block diagram
3.5 CAN FD Interface
CAN FD (CAN flexible data rate) is an improved, backward compatible CAN pro-
tocol. It differs from CAN mainly in the expansion of the useful data per message
from 8 to 64 bytes, higher transmission rates of up to 8 Mbit/s and longer check-
sums, which increase the reliability of transmission. CAN FD covers the demand
for a higher bandwidth for networks in the automotive industry. At the same
time, CAN FD nodes can easily be integrated into the existing CAN infrastructure.
The ES584.1 CAN FD and LIN Bus Interface USB Module has a CAN interface
CAN on its nine-pin DSUB socket. The CAN interface is an independent CAN
channel with its own CAN controller. It is isolated from the USB port of the
ES584.1.
3.5.1 Operating Modes
The CAN interface can be operated in high-speed CAN operating mode or in
CAN FD operating mode (CAN flexible data rate). The ES584.1 module supports
both ISO-compliant and non-ISO-compliant CAN FD.
The CAN interface can be configured in the application software for the follow-
ing operating modes:
• CAN
• ISO-compliant CAN FD
• Non-ISO-compliant CAN FD.
3.5.2 Time Stamp
The ES584.1 time stamps the CAN messages. The INCA application software syn-
chronizes the measurement data recorded by the ES584.1 module with signals
from other ECUs and measuring modules with high precision.
3.5.3 Feature
The CAN applications supported by the ES584.1 are located in an overview in
chapter 6.7.2 on page 39.
3.5.4 Bus Terminating Resistor
The CAN interface requires the use of bus terminating resistors in both operating
modes.