SAP5SD-B-G1-R datasheet(41/63 Pages) ETC2

41 / 63 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.

41 of 62

Table 27: LED status indication

Priority / Status

LED1 / LED 2

Note

1. Power Off

No power supply available

gree

red

2. External Reset

DSTRBn driven LOW for more than 90ms.

3. Periphery Fault

alternating

Periphery Fault signal generated at PFAULT input.

4. No data

exchange

(Address = 0)

Slave is waiting for address assignment. Data Port communication is not

possible.

5. No data

exchange

The IC was reset by the Communication Watchdog or by RES or BR01

master calls, thus the Data_Exchange_Disable flag is still set,

prohibiting Data Port communication. IC is waiting for a

Write_Parameter request.

6. Normal

operation

Data communication is established

red

green

red

green

red

green

red

1 This status is not signaled if the Communication Watchdog is not activated (refer to chapter 4.17

Communication Monitor/Watchdog).

The flashing frequency of any flashing status indication is 2 … 3 Hz.

In case of the simultaneous occurrence of several states the status with the highest priority is signaled.

4.11.2. Master/Repeater Mode

In Master/Repeater Mode LED1 provides the Manchester-II-coded, re-synchronized equivalent of the telegram

signal received at the AS-i input channel.

Every received AS-i telegram is checked for consistency with the protocol specifications and timing jitters

become removed as long as they stay within the specified limits. In case a telegram error is detected, the

output becomes inactive for a certain time periode, see chapter 4.19.3.

LED2 is always logic HIGH (high impedance) in Master/Repeater. In such applications, the green LED shall

be connected to Pin UOUT or different supply levels.

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