E981.07 Datasheet, PDF (40/46 Pages) ELMOS Semiconductor AG – Two independent operating channels

Two Channel Sensor Interface PSI5
ADVANCE PRODUCT INFORMATION JUL 26, 2011
5.2.7 Remote Sensor Decoder
E981.07
5.2.7.1 Functional Description
The remote sensor interface is a two-wire unidirectional current interface used for the connection of a remote
sensing unit (RSU).
The device includes four such interfaces which are fully independent on one another.
5.2.7.2 Manchester Code
The input data is Manchester 2 coded with a baud rate of 125 kbit/s (TBIT = 8µs). The RSU receiving unit of the
981.07 is clocked with CLK or CLK/2 to get a nominal sampling frequency of 4 MHz. Every bit is coded by two
consecutive pulses of equal length. A logical '1' is coded by a low pulse followed by a high pulse, a logical '0' is
coded by a high pulse followed by a low pulse. Figure 5.2-4 shows an example.
Example:
Manchester
Coded Signal
Binary Signal
Bit time
Time
0010110110100
Figure 5.2-4: Manchester Code
ELMOS Semiconductor AG
Data Sheet 40 / 45
QM-No.: 25DS0050E.00
This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.