from 9.6 kb/s to 115.2 kb/s, and
supports most remote control
codes. The design of the HSDL-
3005 also includes the following
unique features:
Appendix C:
Interface to Recommended
I/O Chips
General Application Guide for
the HSDL-3005 Infrared IrDA®
Compliant 115.2 Kb/s
The HSDL-3005’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. The TXD_RC, (pin 7),
or the TXD_IrDA, (pin 3), can be
used to send remote control
codes.
Transceiver
• Spectrally suited to universal
remote control transmission
function.
Description
The HSDL-3005, a wide-voltage
operating range infrared
• Low passive component
count.
transceiver is a low-cost and
small form factor device 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 transmission
function. It is fully compliant to
IrDA 1.4 low power specification
• Shutdown mode for low
power consumption
requirement.
The block diagrams below show
how the IrDA port fits into a
mobile phone and PDA platform.
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
3 under "Recommended
Application Circuit
Components".
SPEAKER
AUDIO INTERFACE
DSP CORE
MICROPHONE
ASIC
CONTROLLER
RF INTERFACE
TRANSCEIVER
MOD/
DE-MODULATOR
IR RC
MICROCONTROLLER
USER INTERFACE
HSDL-3005
MOBILE PHONE PLATFORM
Figure 12. IR layout in mobile phone platform.
17
AVAGO [ AVAGO TECHNOLOGIES LIMITED ]
