SAP5SD-A-G1-T Datasheet, PDF (35/63 Pages) List of Unclassifed Manufacturers – Universal Actuator-Sensor Interface IC

SAP5S / SAP51
Universal Actuator-Sensor Interface IC
The filter output of each data port is preset to “0” after reset or as long as the Data_Exchange_Disable flag is
set, respectively.
DEXCHG Addr 1
Slave DEXCHG Addr1
Slave
DEXCHG Addr 1
Slave
Input
Signal
Filter
Output
Sampling Point
> 256 µs (-6.25%)
Figure 8: Principle of Delay Mode input filtering (exemplary for Slave with Address 1)
Activation of Delay Mode depends on the E²PROM flags Delay_Mode and P1_Delay_Activation and the value
of the Parameter Port P1 Output Register as shown in Table 22. Delay Mode cannot be activated when Safety
Mode is enabled.
Note: The input signal at Parameter Port P1 does not influence activation of Input Delay Mode at all. Only the
master can change the activation status by sending a corresponding Write_Parameter (WPAR) request.
Table 22: Activation of Delay Mode
Delay_Mode
0
1
1
1
P1_Delay_Activation
X
0
1
1
Parameter P1 Output Register
X
X
1
0
Delay Mode
OFF
ON
OFF
ON
4.8.3. Synchronous Data I/O Mode
Since the slaves in an AS-i network are called successively by the master, the data input and output
operations of different slaves are not synchronized normally. If there is, however, an application that requests
accurate synchronized data I/O timing, the respective slaves may be operated in the Synchronous Mode.
Concerning the communication with the master, slaves running in the Synchronous Mode behave like regular
slaves. However, the input data sampling as well as the output data driving is determined by the polling cycle
of the respective AS-i network as described below.
Activation of the SAP5 Synchronous Mode is related to the E²PROM flags Synchronous_Data_IO and
P2_Sync_Activation (refer to Table 9) and the value of the Parameter Port P2 Output Register as follows:
NOTE: The input signal at Parameter Port P2 does not influence activation of Synchronous Data I/O Mode
at all. Only the master can change the activation status by sending a corresponding Write_Parameter
(WPAR) request.
Data Sheet
July 17, 2012
© 2012 Zentrum Mikroelektronik Dresden AG — Rev. 3.1
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is PRELIMINARY and subject to
changes without notice.
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