TX-2B, RX-2B block diagram explanation?

i have use the ic pair TX-2B AND RX-2B, for my remote control.
i have to explain each and every thing in this IC.
some body please help me in understanding the block diagram and the functions. if i want to built this IC my self than what things i need, and what is the schematic. so that i can explain it in good way.
**broken link removed**
**broken link removed**

You're art work is too small to see clearly.

You shold find the IC application information material from internet or IC manufacturer first that you can understand the IC operation.

here is the data sheet.

http://www.elenota.pl/upload/TX-2B(RX-2B)AY.pdf