Comfort

The E521.41 was developed to manage the connection and communication between a microcontroller unit and up to 24 sensor satellites.
Data transmission from the sensor to ECU is done by current modulation on the power supply lines with data rate of 125 Kbit/s or 189 Kbit/s (Manchester coded). Data transmission from ECU to sensor is done by voltage modulation on the power supply. It supports bidirectional communication. Two methods are supported:
• tooth gap method
• pulse width method
The device is a PSI5 V1.3 and V2.1 compliant receiver which provides four independently operating channels. The channels are able to communicate in low power-, standard-, synchronous- and asynchronous operating mode. The communication to ?C is done via the SPI or UART interface.