A2SI-L14-G1-SR ZMDI, A2SI-L14-G1-SR Datasheet - Page 17

• Manufacturer Part Number: A2SI-L14-G1-SR
• Description: Interface - Specialized ASI
• Manufacturer: ZMDI

Specifications of A2SI-L14-G1-SR

• Rohs: yes
• Product Type: Actuator Sensor Interface IC
• Operating Supply Voltage: 12 V to 31.6 V
• Supply Current: 8.5 mA
• Maximum Power Dissipation: 500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOP-14
• Minimum Operating Temperature: - 25 C

Table 4.2: PWM specification of Outputs: Pins DO0, DO1
1
2
3
Provided that a lit LED is caused by a logic low level output signal of the related data pin brightness of the
LED can be controlled by the master call Write Parameter (WPAR, refer to Table 4.1) as shown in Figure 4-3.
After a Write Parameter call has been received the pulse duty ratio will be effective after the slave response
has been sent. The default duty pause ration is 100% which is set after the initialization phase of the IC
automatically. Figure 4-3 shows the telegram structure of the Write Parameter call. and the related slave
response data.
Data Sheet
October 20, 2011
Intensity of
LED
100.00%
50.00%
25.00%
12.50%
The write parameter call is used to control the intensity of LEDs that are interconnect to the data output pins.
Correct by design
Pulse/duty ratio is defined as the quotient ton / tPWM (refer to Table 4.1)
A²SI-Light 14 / A²SI-Light 16
Low End Device AS-Interface
Figure 4-3: PWM control
ST SB
0
Master Telegram
0
ST
© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 3.0
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.
0
“Write Parameter” command from Master
P2
Select DO0 or
DO1
Select DO0 or
DO1
Select DO0 or
DO1
Select DO0 or
DO1
A4
~Sel
P3
from the slave
Slave address
Intensity data
A3
to the master
sent back
P2
A2
P1
A1
P1
1
0
1
0
P0
A0
Output select
1: DO0
0: DO1
PB
1
1
~Sel
P3
P0
1
1
0
0
P2
Slave Response
Intensity
P1
1
data
P0
PWM
Frequency
1 / t
DC (default)
125Hz
125Hz
125Hz
PB
PWM
EB
1
2
Pulse duty ratio
3
16/16
8/16
4/16
2/16
t
on
/ t
PWM
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