Friday, May 5, 2006

PC IrDA interface

DIY IR interface





This circuit is also from www.electronics-lab.com.
Since it is very hard for me to get the infrared interface (TFDU4100), I start to look in the old/damage handphones.
It looks something like this.






Now, you need to remove it using the hot air blower perhaps.




Connecting to motherboard


Please refer to www.electronics-lab.com
on how connect this irda module to your motherboard.

My IrDA







Infrared Transceiver Modules


Here are the pin layout and picture of the device.







Pin Description of TFDU4100


































































Pin Number Function Description I/O Active
1 IRED Anode
IRED anode, should be externally connected
to VCC2 through a current control
resistor
2 IRED Cathode
IRED cathode, internally connected to
driver transistor
3 Txd Transmit Data Input 1 High
4 Rxd
Received Data Output, open collector.
No external pull–up or pull–down resistor
is required (20 k. resistor internal to device).
Pin is inactive during transmission.
0 Low
5 NC Do not connect
6 VCC1/SD Supply Voltage / Shutdown
7 SC Sensitivity control 1 High
8 GND Ground

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