hsdl-3209 ETC-unknow, hsdl-3209 Datasheet - Page 13

• Manufacturer Part Number: hsdl-3209
• Description: Irda Data Compliant Low Power 115.2 Kbit/s Infrared Transceiver
• Manufacturer: ETC-unknow

Appendix C: General Application
Guide for the HSDL-3209
Description The HSDL-3209, a
low-cost and ultra-small form
factor infrared transceiver, 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 fully
compliant to IrDA 1.4 low
power specification from 9.6
kb/s to 115.2 kb/s, and
supports HP-SIR and TV
Remotes modes. The design of
the HSDL-3209 also includes
the following unique features:
- Low passive component
- Shutdown mode for low
Selection of Resistor R1
Resistor R1 should be selected
to provide the appropriate
peak pulse LED current over
different ranges of Vcc as
shown on page 2 under
“Recommended Application
Circuit Components”.
Interface to Recommended I/O
chips The HSDL-3209’s TXD
data input is buffered to allow
for CMOS drive levels. No
peaking circuit or capacitor is
required. Data rate from 9.6
kb/s up to 115.2 kb/s is
available at the RXD pin.
Figure 10 shows how the IrDA
port fits into a mobile phone
and PDA platform.
The link distance testing was
done using typical HSDL-3209
units with SMC’s FDC37C669
and FDC37N769 Super I/O
controllers. An IrDA link
distance of up to 50 cm was
demonstrated.
13
count.
power consumption
requirement.
Figure 9. Mobile phone platform
Figure 10. PDA platform
Controller
PCMCIA
RAM
ROM
Transceiver
Modulator
Mod /De-
Microphone
Speaker
CPU for embedded
RS232C
Driver
PDA Platform
Interface
application
Interface
Panel
Interface
LCD
Audio
User
RF
Mobile Phone Platform
COM
Port
IR
HSDL-3209
Microcontroller
Touch
Panel
Core
DSP
Controller
IR
ASIC
HSDL-3209