ASI4U / ASI4U-E / ASI4U-F

Spec. 3.0 Compliant Universal AS-I IC

Data Sheet

April 2, 2012

© 2012 Zentrum Mikroelektronik Dresden AG — Rev. 2.2

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 subject to changes without notice.

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3.6.

Parameter Port and PST Pin............................................................................................................... 6

3.6.1.

Slave Mode................................................................................................................................... 6

3.6.2.

Parameter Multiplex Mode............................................................................................................ 6

3.6.3.

Special function of P0, P1 and P2 ................................................................................................ 6

3.6.4.

Master-, Repeater-, Monitor Mode................................................................................................6

3.7.

Data Port and DSR Pin ....................................................................................................................... 6

3.7.1.

Slave Mode................................................................................................................................... 6

3.7.2.

Input Data Pre-Processing............................................................................................................ 6

3.7.3.

Fixed Output Data Driving ............................................................................................................ 6

3.7.4.

Synchronous Data I/O Mode ........................................................................................................ 6

3.7.5.

Support of 4I/4O processing in Extended Address Mode, Profile 7.A.x.E ..................................... 6

3.7.6.

Safety Mode Operation................................................................................................................. 6

3.7.7.

Master-, Repeater-, Monitor Mode................................................................................................6

3.7.8.

Special function of DSR................................................................................................................ 6

3.8.

Fault Indication Input Pin FID.............................................................................................................. 6

3.8.1.

Slave Mode................................................................................................................................... 6

3.8.2.

Master- and Monitor Mode............................................................................................................ 6

3.9.

LED outputs ........................................................................................................................................ 6

3.9.1.

Slave Mode................................................................................................................................... 6

3.9.2.

Communication via Addressing Channel ...................................................................................... 6

3.9.3.

Master-, Repeater-, Monitor Mode................................................................................................6

3.10. Oscillator Pins OSC1, OSC2............................................................................................................... 6

3.11. IC Reset.............................................................................................................................................. 6

3.11.1. Power On Reset ........................................................................................................................... 6

3.11.2. Logic controlled Reset .................................................................................................................. 6

3.11.3. External Reset .............................................................................................................................. 6

3.12. UART .................................................................................................................................................. 6

3.12.1. AS- i input channel ....................................................................................................................... 6

3.12.2. Addressing Channel ..................................................................................................................... 6

3.13. Main State Machine ............................................................................................................................ 6

3.14. Communication Monitor/Watchdog ..................................................................................................... 6

3.15. Toggle watchdog for 4I/4O processing in Extended Address Mode .................................................... 6

3.16. Write Protection of ID_Code_Extension_1 .......................................................................................... 6

3.17. Power Supply...................................................................................................................................... 6

3.17.1. Voltage Output Pins UOUT and U5R............................................................................................ 6

3.17.2. Input Impedance (AS-i bus load) .................................................................................................. 6

3.18. Thermal and Overload Protection ....................................................................................................... 6

4

Application Circuits .................................................................................................................................... 6

5

Package Outline (SOP28 / ASI4U-E)......................................................................................................... 6

6

Package Outline (SSOP28 / ASI4U / ASI4U-F) ......................................................................................... 6