HSDL-3020-021 Lite-On Electronics, HSDL-3020-021 Datasheet - Page 17
HSDL-3020-021
Manufacturer Part Number
HSDL-3020-021
Description
Infrared Transceivers IR Transceiver 4.0Mb/s
Manufacturer
Lite-On Electronics
Datasheet
1.HSDL-3020-021.pdf
(24 pages)
Specifications of HSDL-3020-021
Wavelength
875 nm
Continual Data Transmission
4 Mbit/s
Transmission Distance
50 cm
Radiant Intensity
10 mW/sr
Half Intensity Angle Degrees
30 deg to 60 deg
Pulse Width
4 us, 1.6 us
Maximum Rise Time
40 ns, 600 ns
Maximum Fall Time
40 ns, 600 ns
Led Supply Voltage
0 V to 6.5 V
Maximum Forward Current
190 mA
Operating Voltage
2.4 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 25 C
Dimensions
10.4 mm x 2.95 mm x 2.5 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Selection of Resistor R2 and R3
Resistor R2 and R3 should be selected to provide the ap-
propriate peak pulse IR and RC LED current respectively
at different ranges of V
ommended Application Circuit Components. ”
17
Appendix C: General Application Guide for the HSDL-3020
Infrared IrDA Compliant 4 Mb/s Transceiver
Description
The HSDL-3020, a wide-voltage operating range infra-
red transceiver is a low-cost and small form factor de-
vice that is designed to address the mobile computing
market such as PDAs, as well as small embedded mobile
products such as digital cameras and cellular phones. It
is spectrally suited to universal remote control transmis-
sion function at 940 nm typically. It is fully compliant to
IrDA 1.4 low power specification up 4 Mb/s and supports
most remote control codes. The design of HSDL-3020
also includes the following unique features:
• Spectrally suited to universal remote control
• Low passive component count
• Shutdown mode for low power consumption
• Direct interface with I/O logic circuit
Figure 2: Mobile application platform.
EXPANSION
transmission function at 940 nm typically
requirement
MEMORY
SDRAM
FLASH
TOUCH PANEL
LOGIC BUS
ROM
DRIVER
CC
as shown on page 4 under “ Rec-
A/D
MEMORY I/F
LCD CONTROL
MANAGEMENT
LCD PANEL
STN/TFT
POWER
APPLICATION
CHIPSET
MOBILE
PERIPHERIAL INTERFACE
CONTROLLER
BASEBAND
KEY PAD
ANTENNA
INTERFACE
SOUND
PWM
AC97
Interface to the Recommended I/O Chip
The HSDL-3020’s TxD data input is buffered to allow for
CMOS drive levels. No peaking circuit or capacitor is re-
quired. Data rate from 9.6 kb/s to 4 Mb/s is available at
RxD pin. The TxD_RC, pin 2, together with RC_LEDA, pin
9, is used to select the remote control transmit mode.
Alternatively, the TxD_IR, pin 6, together with IR_LEDA,
pin 8, is used for infrared transmit selection.
Following shows the hardware reference design with
HSDL-3020.
* Detailed configuration of HSDL-3020 with the controller chip is
IrDA
The use of the infrared tech–niques for data communica-
tion has increased rapidly lately and almost all mobile
application processors have built in the IR port. This does
away with the external Endec and simplifies the interfac-
ing to a direct connection between the processor and
the transceiver. The next section discusses interfacing
configuration with a general processor.
I2S
shown in Figure 3.
LCD BACKLIGHT
*HSDL-3020
AUDIO INPUT
PCM SOUND
CONTRAST