Serial data decoder using Arduino Uno

[Rabiya]

I've been using ATmega328. I need to serially recieve data of upto 16 bits (along with latch pulse and clock pulse) and based on this data, the microcontroller needs to give a specific output. For example, if the input serial data is 0001, the microcontroller should interpret it and generate a 5V pulse of certain length as an output. There are several modes which need to be selected based on the serial data. How do I program an Arduino to do this?
(Particularly how do I use the USART to do this?)

 

[Harald Kapp]

Which serial data format do you use? UART, SPI, I²C, ...?

 

[Rabiya]

Which serial data format do you use? UART, SPI, I²C, ...?

USART

 

[Harald Kapp]

I'm sorry, I missed that part in your original post.

Use the arduino serial library. Here's a tutorial.