SAP5SD-A-G1-T Datasheet, PDF (51/63 Pages) List of Unclassifed Manufacturers – Universal Actuator-Sensor Interface IC

SAP5S / SAP51
Universal Actuator-Sensor Interface IC
4.19. Master- and Repeater Mode
4.19.1. Master/ Repeater Mode Activation
The SAP5 Master/ Repeater Mode functionality gets enabled by use of the E²PROM flag Master_Mode (refer
to Table 9). In order to activate the Master_Mode, an IC Reset (refer to chapter 4.13 on page 42) has to be
performed after programming of the E²PROM Master_Mode flag.
For distinction between Master- and Repeater Mode the ID_Code may be set to a certain value as described
in Table 35.
NOTE: The ID_Code has to be programmed before activation of the Master_Mode flag. Once the
Master_Mode flag is set to logic HIGH, the slave functionality of the SAP5 is no longer available, preventing
any write access to the E²PROM by use of AS-i master requests as described on page 25.
Moreover, the Master- and Repeater Mode functionality may be disabled generally by use of a hidden
E²PROM flag. This flag is inaccessible by the user, but may be set during the ZMDI production test.
Table 35: Activation of the SAP5 Master/Repeater Mode
Master_Mode
E²PROM flag
0
ID_Code
X
Master Mode 1
OFF
1
0…4
ON
1
6…0xF
OFF
1
5
OFF
Master Mode 2
OFF
OFF
ON
OFF
Repeater Mode
OFF
OFF
OFF
ON
4.19.2. Pin Assignment
In Master- and Repeater Mode the SAP5 pins are configured as follows. Pins which are not used are kept at
logic HIGH (high impedance) state in order to reduce internal power dissipation of the IC.
Pin 1
not used
not used
not used
TX_DAT
RESETn
RX_DAT
OSC2
OSC1
U5R
LTGN
SAP5
not used
not used
not used
not used
APF
not used
not used
UOUT
CDC
LTGP
Figure 13: SAP Package Pin Assignment in Master/Repeater Mode
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
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