A Tip A Day [:: ATAD ::]

a fortune, two cents a day

ATAD #17 – I/O interface

leave a comment »

Communication between the processor and other devices are enabled by an I/O interface, and the Front Side Bus (FSB) is the data transfer bus that carries information between the CPU and the Northbridge (memory controller hub) of the Motherboard.

The I/O interface must have atleast the following features

  1. Have necessary logic to interpret the device address generated by the processor.
  2. Handshaking should be implemented by the interface using appropriate commands like (BUSY,READY,WAIT) the processor can communicate with I/O device through the interface.
  3. If incase different data formated being exchanged; interface must be able to convert serial data to parallel form and vice-versa.
  4. There must be provision for generating interrupts and the corresponding type numbers for further processing by the processor if required

Further Reading: FSB, Direct Memory Access, Memory Mapped IO, Port Mapped IO



Written by veed

August 14, 2008 at 8:13 pm

Posted in ATAD, computing, tech

Tagged with ,

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: