SAP51D-B-G1-R datasheet(51/62 Pages) ZMD

51 / 62 page

SAP5S / SAP51

Universal Actuator-Sensor Interface IC

Data Sheet

July 17, 2012

the prior written consent of the copyright owner. The information furnished in this publication is PRELIMINARY and subject to

changes without notice.

51 of 62

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

ID_Code

Master Mode 1

Master Mode 2

Repeater Mode

OFF

0…4

OFF

6…0xF

OFF

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.

RESETn

RX_DAT

OSC2

OSC1

not used

TX_DAT

not used

APF

not used

UOUT

U5R

LTGN

CDC

LTGP

SAP5

Pin 1

Figure 13: SAP Package Pin Assignment in Master/Repeater Mode

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