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ASDL-3023 Datasheet(PDF) 20 Page - Lite-On Technology Corporation

Part # ASDL-3023
Description  IrDA??Data Compliant Low Power 4Mbit/s with Remote Control Infrared Transceiver
PDF  26 Pages
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Manufacturer  LITEON [Lite-On Technology Corporation]
Direct Link  http://www.liteon.com.tw/databook/default.htm
Logo LITEON - Lite-On Technology Corporation

ASDL-3023 Datasheet(HTML) 20 Page - Lite-On Technology Corporation

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General mobile application processor
The transceiver is directly interface with the micropro-
cessor provided its support infrared communication
commonly known as Infrared Communications Port
(ICP).TheICPsupportsbothSIRdataratesupto115.2kps
and sometimes FIR data with data rates up to 4Mbps.
The remote control commands can be sent one of the
available General Purpose IO pins or the UART block
withIrDAfunctionality.Itshouldbeshouldbeobserved
that although both IrDA data transmission and Remote
control transmission is possible simultaneously by the
hardware,hencethesoftwareisrequiredtoresolvethis
issuetopreventthemixingandcorruptionofdatawhile
being transmitted over the free air.The above Figure 3
illustrates a reference interfacing to implement both IR
andRCfunctionalitywithASDL-3023.
Remote Control Operation
The ASDL-3023 is spectrally suited to universal remote
controltransmissionfunctionat940nmtypically.Remote
controlapplicationsarenotgovernedbyanystandards,
owing to which there are numerous remote codes
in market. Each of those standards results in receiver
modules with different sensitivities, depending on the
carriesfrequenciesandresponsivelytotheincidentlight
wavelength. Remote control carrier frequencies are in
therangeof30KHzto60KHz(fordetailsofsomethefre-
quentlyusedcarrierfrequencies,pleaserefertoAN1314).
Some common carrier frequencies and the correspond-
ing SA-1110 UART frequency and baud rate divisor are
showninTable3.
Table 3.
Remote Control Carrier
Frequency (KHz)
SA-1110 UART
Frequency (KHz)
Baud Rate
Divisor
30
28.8
8
32,33
32.9
7
36,36.7,38,39.2,40
38.4
6
56
57.6
4
Figure 3. ASDL-3023 configuration with general mobile architecture processor
GND
GND
HSDL3021
GPIO
TXD_RC
RXD
SD
IR_RXD
GPIO
IOVCC
GND
IOVCC
IR_TXD
100Kohm
TXD_IR
VLED
R3
CX4
CX3
VLEDA
IOVCC
CX5
100Kohm
GND
GND
R1
CX1
CX2
VCC
GND
VCC



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