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ASI4U-E 데이터시트 PDF




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기능 V3.0 Compliant Universal AS-i IC
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ASI4U-E 데이터시트, 핀배열, 회로
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.
1
January 26, 2016




ASI4U-E pdf, 반도체, 판매, 대치품
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

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ASI4U-E 전자부품, 판매, 대치품
ASI4U / ASI4U-E / ASI4U-F Datasheet
1 Important Safety Advice
Important Safety Notice: This IDT product is intended for use in commercial applications.
! Applications requiring extended temperature range, unusual environmental requirements, or
high-reliability applications, such as military, medical life-support, or life-sustaining equipment,
are specifically not recommended without additional mutually agreed upon processing by IDT
for such applications.
1.1. AS-i-Safety Applications
The ASI4U/ASI4U-E/ASI4U-F is designed to allow replacement of IDT’s A²SI ICs in existing board layouts and
applications (also see section 1.2 for important restrictions). However, since the ASI4U/ASI4U-E/ASI4U-F pro-
vides additional data preprocessing functions at the data input channel, the fault reaction time of an AS-i Safety
module could increase by 40ms if some of the new features become activated by intention, by accident, or
hardware fault.
IDT strongly recommends the use of the Safety Mode feature of the ASI4U/ASI4U-E/ASI4U-F if it is replacing the
A²SI in existing ASI-Safety designs. The same fault reaction times as with the A²SI are guaranteed only in this
Safety Mode. For compatibility with the modified data input routing in Safety Mode, the user must adapt the safety
code table stored in the external microcontroller. Only safety code sequences that contain the value 1110 are
permitted.
If the IC is operated in Safety Mode, the user must ensure that the Synchronous Data I/O Mode as well as the
data input filters remain disabled by appropriate EEPROM configuration.
Application of the ASI4U/ASI4U-E/ASI4U-F in Standard Mode (no Safety Mode enabled) for AS-i Safety products
is possible if an additional fault reaction time of 40ms is taken into account.
The user must also adhere to the additional security advice provided in Production and Repair of AS-i Safety
Slaves, which is available on the IDT web page www.IDT.com (see section 8).
1.2. Repair of ASI-Safety Modules
Important: If an A²SI-based ASI-Safety module must be repaired, replacing the A²SI IC with the newer
ASI4U/ASI4U-E/ASI4U-F is explicitly prohibited. This is to prevent safety-relevant deviations of module
properties that can result from the different data input paths and the possible increase in fault reaction time
discussed in section 1.1.
The user must also adhere to the additional security advice provided in Production and Repair of AS-i Safety
Slaves, which is available on the IDT web page www.IDT.com.
© 2016 Integrated Device Technology, Inc.
7
January 26, 2016

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관련 데이터시트

부품번호상세설명 및 기능제조사
ASI4U-E

V3.0 Compliant Universal AS-i IC

IDT
IDT
ASI4U-F

V3.0 Compliant Universal AS-i IC

IDT
IDT

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