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 motherboardPlease refer to www.electronics-lab.com on how connect this irda module to your motherboard.
Infrared Transceiver ModulesHere are the pin layout and picture of the device.
Pin Description of TFDU4100
|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|