ES921 – CAN Module

The ES921 CAN module provides two additional CAN interfaces for the compact ES910 Prototyping and Interface Module. It is plugged into the extension slot of the ES910 module.

The two CAN interfaces can be configured individually into High Speed or Low Speed CAN buses. The High Speed bus is connected via the TJA1040 transceiver and the Low Speed bus via the TJA1055 transceiver.

For a rapid prototyping experiment, an ECU bypass can be configured with INTECRIO using the CAN-I/O function or the XCP-on-CAN bypass function. By using the two additional CAN interfaces of the ES921 module, a prototyping function of the ES910 module can be connected to up to four CAN buses in a vehicle network.

For measurement and calibration purposes, the ES921 CAN interfaces can be used with INCA to gather data from the vehicle bus. INCA versions 6.2.1 and higher provide measurement and calibration support for the ES921 module. For example, an ECU connected to a CAN bypass via the ES910 module can be simultaneously calibrated with INCA.

Functions

CAN extension module for ES910
Two electrically isolated CAN interfaces
TJA1040 and TJA1055 transceivers to connect to the High Speed and Low Speed CAN buses
Baud rate of up to 1 MBd for High Speed CAN and up to 125 kBd for Low Speed CAN
FPGA-based CAN communication controller
LED on the ES921 front panel indicating CAN communication
Wake-up through traffic on the High Speed CAN bus
Supported by INTECRIO, ASCET-RP, and INCA

Technical data

Size and Weight
Size and Weight Dimensions (HxWxD)	20 x 35 x 83 mm /0.79 x 1.38 x 3.27 in
Size and Weight Weight	50 g/0.11 lb
Size and Weight Environment
Size and Weight Temperature range	-40 °C to +50 °C / -40 °F to +122 °F (operation)
Size and Weight	-40 °C to +85 °C/-40 °F to +185 °F (storage)
Size and Weight Power supply
Size and Weight Input voltage	3.3 V /5 V
Size and Weight Power consumption	0.85 W (typically)/1 W (max.)
Size and Weight Stand-by current	< 0.7 mA
Size and Weight CAN bus interface
Size and Weight Channels	2 independent channels
Size and Weight	Each channel is separately configurable either as High Speed CAN or as Low Speed CAN
Size and Weight High Speed CAN	TJA1040 transceiver
Size and Weight	1 MBd maximum baud rate with a bus length of up to 20 m
Size and Weight	Differential internal resistor of 10 kΩ
Size and Weight Low Speed CAN	TJA1055 transceiver
Size and Weight	125 kBd maximum baud rate
Size and Weight	Internal 2.2 kΩ termination resistors
Size and Weight Electrical isolation	Both channels are electrically isolated from each other and from other circuitry
Size and Weight Communication controller	FPGA-based
Size and Weight Wake-up	Wake-up and sleep function on High Speed CAN bus
Size and Weight Comfort features
Size and Weight LEDs	For quick status check on CAN bus
Size and Weight Supported by ETAS Software
Size and Weight	INTECRIO V3.1.1, INCA V7.0, HSP V8.0.0, and higher ASCET-RP V6.2.1, HSP V8.1.0, and higher

Notes
This product has been developed and released for use in automotive applications. For usage in other domains please contact your ETAS representative.

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