ASI4U-E Datasheet PDF - IDT

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ASI4U-E
IDT

Part Number ASI4U-E
Description V3.0 Compliant Universal AS-i IC
Page 30 Pages


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AS-Interface Spec. V3.0
Compliant Universal AS-i IC
ASI4U /
ASI4U-E /
ASI4U-F
Datasheet
Brief Description
The ASI4U is a next-generation CMOS integrated
circuit for AS-i networks. This low-level field bus AS-i
(Actuator Sensor Interface) was designed for easy,
safe, and cost-effective interconnection of sensors,
actuators, and switches. It transports both power
and data over the same two-wire unshielded cable.
The ASI4U is used as part of a master or slave node
and functions as an interface to the physical bus. It
provides the power supply, physical data transfer,
and communication protocol handling. The ASI4U is
fully compliant with the AS-Interface Complete
Specification V3.0. It is function and pin compatible
with the A²SI IC.
All configuration data are stored in an internal
EEPROM that can be easily programmed by a
stationary or handheld programming device. The
special AS-i safety option assures short response
times for security-related events.
Features
Compliant with AS-Interface Complete Specifica-
tion V3.0
Universal application: slaves, masters, repeaters,
and bus-monitors
Floating AS-i transmitter and receiver for highly
symmetrical high-power applications
On-chip electronic inductor with current drive
capability of 55 mA
Two configurable LED outputs to support all
AS-Interface Complete Specification V3.0 status
indication modes
Several data pre-processing functions, including
configurable data input filters and bit-selective
data inverting
Additional addressing channel for easy wireless
module setup
Support of 8 and 16 MHz crystals by automatic
frequency detection
Special AS-i safety option
Clock watchdog for high system security
Related Products
SAP5 Universal AS-Interface IC
Benefits
Flexible, separated I/O pins
Flexible AS-i Bus adoption (isolated transceiver)
Very small package SSOP28 (ASI4U and ASI4U-F)
High ambient temperature applications (ASI4U-E)
Physical Characteristics
ASI4U operational temperature: -25 to +85 °C
ASI4U-F operational temperature: -40 to +85 °C
ASI4U-E operational temperature: -25 to +105 °C
RoHS-conformant package: SSOP28 (ASI4U and
ASI4U-F) / SOP28 (ASI4U-E)
Available Support
IDT AS-Interface Programmer Kit V2.0
IDT ASI4U Evaluation Board V2.0
ASI4U Basic Application Circuits
Standard Application
UIN
OSC1
UOUT
FID
DSR
+24V
OSC2
PST
ASI+
ASIP
DI[3:0]
DO[3:0]
ASI4U
ASI-
ASIN
P[3:0]
CAP
U5R
LED1
LED2
0V IRD
GND
+0V
Extended Power Application with IR-Addressing Option
+24V
UIN
OSC1
UOUT
FID
DSR
OSC2
PST
ASI+
ASIP
DI[3:0]
DO[3:0]
ASI4U
ASI-
ASIN
P[3:0]
CAP
U5R
LED1
LED2
0V IRD
GND
+0V
© 2016 Integrated Device Technology, Inc.
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AS-Interface Spec. V3.0
Compliant Universal AS-i IC
ASI4U /
ASI4U-E /
ASI4U-F
Datasheet
ASI4U Block Diagram
Typical Applications
AS-i Master Modules
AS-i Slave Modules
AS-i Safety Modules
UIN UOUT
U5R
OSC1 OSC2
CAP
ELECTRONIC
INDUCTOR
POWER
SUPPLY
OSCILLATOR
OUTPUT
STAGE
DO(3:0)
ASI4U/ASI4U-E/ASI4U-F
INPUT
STAGE
ASIP
ASIN
THERMAL /
OVERLOAD
PROTECTION
RECEIVE
P - PULSE
N - PULSE
I/O
RESET STAGE
REC- RESET
TRANSMIT
SEND -D
SEND- SBY
DIGITAL
LOGIC
DATA- STRB
PARAM OUTPUT
STRB STAGE
OVER- LOAD
INPUT
STAGE
OVER- HEAT
IRD_IN
CMOS AC
INPUT CURRENT
STAGE INPUT
OUTPUT
STAGE
DIG ANA
INPUT
STAGE
OUTPUT
STAGE
DI(3:0)
DSR
PST
P(3:0)
AGND
LGND
0V GND
IRD LED1 LED2 FID
Ordering Information
Ordering Code
Type
ASI4UE-G1-ST
ASI4UE-G1-SR
ASI4UE-G1-SR-7
ASI4UE-G1-MT
ASI4UE-G1-MR
ASI4UE-E-G1-ST
ASI4UE-E-G1-SR
ASI4UE-F-G1-ST
ASI4UE-F-G1-SR
Standard
Standard
Standard
Master
Master
Standard
Standard
Standard
Standard
Package
SSOP28
SSOP28
SSOP28
SSOP28
SSOP28
SOP28
SOP28
SSOP28
SSOP28
Ta [°C]
-25 to 85
-25 to 85
-25 to 85
-25 to 85
-25 to 85
-25 to 105
-25 to 105
-40 to 85
-40 to 85
RoHS
Conform
Y
Y
Y
Y
Y
Y
Y
Y
Y
Packaging
Tube (47 parts/tube)
Tape & Reel (1500 parts/reel)
Tape & Reel 7” (500 parts/reel)
Tube (47 parts/tube)
Tape & Reel (1500 parts/reel)
Tube (27 parts/tube)
Tape & Reel (1000 parts/reel)
Tube (47 parts/tube)
Tape & Reel (1500 parts/reel)
Minimum
Order
470
1500
500
470
1500
270
1000
470
1500
Corporate Headquarters
6024 Silver Creek Valley Road
San Jose, CA 95138
www.IDT.com
Sales
1-800-345-7015 or 408-284-8200
Fax: 408-284-2775
www.IDT.com/go/sales
Tech Support
www.IDT.com/go/support
DISCLAIMER Integrated Device Technology, Inc. (IDT) reserves the right to modify the products and/or specifications described herein at any time, without notice, at IDT's sole discretion. Performance
specifications and operating parameters of the described products are determined in an independent state and are not guaranteed to perform the same way when installed in customer products. The
information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT's products for any particular purpose, an
implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property
rights of IDT or any third parties.
IDT's products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be
reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.
Integrated Device Technology, IDT and the IDT logo are trademarks or registered trademarks of IDT and its subsidiaries in the United States and other countries. Other trademarks used herein are the
property of IDT or their respective third party owners. For datasheet type definitions and a glossary of common terms, visit www.idt.com/go/glossary. All contents of this document are copyright of Integrated
Device Technology, Inc. All rights reserved.
© 2016 Integrated Device Technology, Inc.
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ASI4U / ASI4U-E / ASI4U-F Datasheet
Contents
1 Important Safety Advice ................................................................................................................................... 7
1.1. AS-i-Safety Applications ............................................................................................................................ 7
1.2. Repair of ASI-Safety Modules ................................................................................................................... 7
2 General Device Specifications ......................................................................................................................... 8
2.1. Absolute Maximum Ratings (Non-Operating)............................................................................................ 8
2.2. Operating Conditions ............................................................................................................................... 10
2.3. Quality Standards .................................................................................................................................... 10
3 Basic Functional Description .......................................................................................................................... 11
3.1. Functional Block Diagram........................................................................................................................ 11
3.2. General Operational Modes .................................................................................................................... 13
3.3. Slave Mode.............................................................................................................................................. 14
3.3.1. AS-Interface Communication Channel ............................................................................................. 14
3.3.2. IRD Communication Channel ........................................................................................................... 15
3.3.3. Parameter Port Pins.......................................................................................................................... 15
3.3.4. Data Port Pins ................................................................................................................................... 16
3.3.5. Data Input Inversion .......................................................................................................................... 16
3.3.6. Data Input Filtering............................................................................................................................ 16
3.3.7. Fixed-Data Output Driving ................................................................................................................ 16
3.3.8. Synchronous Data I/O Mode............................................................................................................. 17
3.3.9. 4 Input / 4 Output Processing in Extended Address Mode ............................................................... 17
3.3.10. AS-i Safety Mode .............................................................................................................................. 17
3.3.11. Enhanced LED Status Indication ...................................................................................................... 18
3.3.12. Communication Monitor/Watchdog................................................................................................... 18
3.3.13. Write Protection of ID_Code_Extension_1 ....................................................................................... 18
3.3.14. Summary of Master Calls.................................................................................................................. 18
3.4. Master Mode............................................................................................................................................ 21
3.5. EEPROM ................................................................................................................................................. 22
4 Detailed Functional Description...................................................................................................................... 25
4.1. AS-i Receiver........................................................................................................................................... 25
4.2. AS-i Transmitter....................................................................................................................................... 26
4.3. Addressing Channel Input IRD ................................................................................................................ 26
4.3.1. General Slave Mode Functionality .................................................................................................... 26
4.3.2. AC Current Input Mode ..................................................................................................................... 28
4.3.3. CMOS Input Mode ............................................................................................................................ 28
4.3.4. Master, Repeater, and Monitor Modes ............................................................................................. 29
4.4. Digital Inputs – DC Characteristics.......................................................................................................... 30
4.5. Digital Outputs - DC Characteristics........................................................................................................ 30
© 2016 Integrated Device Technology, Inc.
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ASI4U / ASI4U-E / ASI4U-F Datasheet
4.6. Parameter Port and PST Pin ................................................................................................................... 31
4.6.1. Slave Mode ....................................................................................................................................... 31
4.6.2. Parameter Multiplex Mode ................................................................................................................ 32
4.6.3. Special Function of P0, P1 and P2 ................................................................................................... 32
4.6.4. Master, Repeater, and Monitor Modes ............................................................................................. 33
4.7. Data Port and DSR Pin............................................................................................................................ 34
4.7.1. Slave Mode ....................................................................................................................................... 34
4.7.2. Input Data Pre-processing ................................................................................................................ 35
4.7.3. Fixed Output Data Driving................................................................................................................. 38
4.7.4. Synchronous Data I/O Mode............................................................................................................. 39
4.7.5. Support of 4I/4O Processing in Extended Address Mode, Profile 7.A.x.E ....................................... 40
4.7.6. Safety Mode Operation ..................................................................................................................... 41
4.7.7. Master, Repeater, and Monitor Modes ............................................................................................. 45
4.7.8. Special Function of DSR................................................................................................................... 46
4.8. Fault Indication Input Pin FID .................................................................................................................. 46
4.8.1. Slave Mode ....................................................................................................................................... 46
4.8.2. Master and Monitor Modes ............................................................................................................... 46
4.9. LED Outputs ............................................................................................................................................ 47
4.9.1. Slave Mode ....................................................................................................................................... 47
4.9.2. Communication via Addressing Channel .......................................................................................... 48
4.9.3. Master, Repeater, and Monitor Modes ............................................................................................. 48
4.10. Oscillator Pins OSC1, OSC2 ................................................................................................................... 49
4.11. IC Reset................................................................................................................................................... 49
4.11.1. Power-On Reset................................................................................................................................ 50
4.11.2. Logic Controlled Reset...................................................................................................................... 51
4.11.3. External Reset................................................................................................................................... 51
4.12. UART ....................................................................................................................................................... 52
4.12.1. AS-i Input Channel ............................................................................................................................ 52
4.12.2. Addressing Channel.......................................................................................................................... 54
4.13. Main State Machine................................................................................................................................. 55
4.14. Status Registers ...................................................................................................................................... 56
4.15. Communication Monitor/Watchdog ......................................................................................................... 56
4.16. Toggle Watchdog for 4I/4O Processing in Extended Address Mode ...................................................... 57
4.17. Write Protection of ID_Code_Extension_1.............................................................................................. 57
4.18. Power Supply........................................................................................................................................... 58
4.18.1. Voltage Output Pins UOUT and U5R ............................................................................................... 59
4.18.2. Input Impedance (AS-Interface Bus Load) ....................................................................................... 59
4.19. Thermal and Overload Protection............................................................................................................ 60
© 2016 Integrated Device Technology, Inc.
4
January 26, 2016



ASI4U-E datasheet pdf
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Related : Start with ASI4U- Part Numbers by
ASI4U-E V3.0 Compliant Universal AS-i IC ASI4U-E
IDT
ASI4U-E pdf
ASI4U-F V3.0 Compliant Universal AS-i IC ASI4U-F
IDT
ASI4U-F pdf

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