ASI4UC-G1-MT ZMDI, ASI4UC-G1-MT Datasheet - Page 38

• Manufacturer Part Number: ASI4UC-G1-MT
• Description: Interface - Specialized ASI
• Manufacturer: ZMDI

Specifications of ASI4UC-G1-MT

• Product Category: Interface - Specialized
• Rohs: yes
• Product Type: Actuator Sensor Interface IC
• Operating Supply Voltage: 16 V to 33.1 V
• Supply Current: 6 mA
• Maximum Power Dissipation: 850 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Minimum Operating Temperature: - 25 C

If the IC is operated in Parameter Multiplex mode (see descriptions in chapter 3.6.1 and 3.6.2 on page 32 et
sqq.) while the P1_filter_activation flag is set, the Parameter Multiplex mode remains disabled for parameter
port pin P1. This is to avoid erroneous deactivation of the input filters if no external driver is connected.
Input data inverting and input data filtering are independent features that can be combined as required by the
application. Programming the following E²PROM flags or registers activates them:
Table 21: E²PROM configuration for different Input Modes
3.7.3.
Besides the standard output function the Data Output Port provides an additional function to drive a fixed
output value that is stored in the Firmware Area of the E²PROM. This feature is basically meant to support
signaling of different Firmware Area setups to outside slave module circuitry. It presumes the application does
not require all four Data Output pins.
The E²PROM Data_Out_Configuration register is used to determine whether the corresponding Data Port
output signal is sensitive to Data_Exchange calls, or if the driven Data Output value is taken from the
corresponding bit in the Data_Out_Value register, also located in the Firmware Area of the E²PROM.
The index of the DO signal corresponds to the bit position in the Data_Out_Configuration and
Data_Out_Value
Data_Out_Configuration bit is set to ‘1’. The standard output mode is activated if Data_Out_Configuration is
programmed to 0x0, which is the default state of the register.
3.7.4.
As defined in the AS-i Complete Specification, a master successively polls the network rising the slave
addresses from the lowest to the highest. Hence, data input and output operations normally take place at
different times in different slaves. To support applications that require simultaneous Data I/O operations on a
certain number of slaves in the network, a Synchronous Data I/O Mode is provided.
The feature is enabled if the Synchronous_Data_IO flag is set in the firmware area of the E²PROM (=’1’).
Activation of the feature additionally depends on the value of the P2_Sync_Data_IO_Activation flag. Following
coding applies:
Table 22: Activation states of Synchronous Data IO Mode
The Parameter Port signal P2 is sampled at the rising edge of the Data Strobe (L/H transition) signal to
determine the Data I/O behavior at the next Data Output event.
Data Sheet
January 30, 2012
E²PROM
Flag or register name
Invert_Data_In
DI_Invert_Configuration
DI_Filter_Configuration
DI_Filter_Time_Constant
Synchronous_Data_IO
flag
0
1
1
1
ASI4U / ASI4U-E
Spec. 3.0 Com
Fixed Output Data Driving
Synchronous Data I/O Mode
© 2012 Zentrum Mikroelektronik Dresden AG — Rev. 2.1
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 PRELIMINARY and subject to
changes without notice.
pliant Universal AS-I IC
registers.
P2_Sync_Data_IO_Activation
flag
Don’t care
0
1
1
The
Input Mode
Standard Input
0
0x0
0x0
Don’t care
fixed
output
driving
Joint
Inverting
1
don’t care
Input filtering is additionally possible
Input Value at P2
Don’t care
Don’t care
Low level (=’0’)
High level (=’1’)
capability
Input
Selective
Inverting
0
0x1 … 0xF
is
activated
Synchronous Data I/O Mode
Deactivated
Activated
Activated
Deactivated
Input
if
Selective
Filtering
Input inverting
is additionally
possible
0x1 … 0xF
0x0 … 0x7
the
38 of 63
particular
Input