Dear "Rajeesh.R",

In message 1277360497.2839.14.camel@localhost.localdomain you wrote:

  I am using at91rm9200 dk  board .
  I have downloaded  Uboot version 1.3.4 .  and configured for

at91rm9200dk board by using command make at91rm9200dk_config make

U-Boot 1.3.4 is two years old, i. e. hoplessly obsolete. Please use current code instead (v2010.06-rc3).

  then I tried  to download it stops after some time with error 
  waiting for ACK,97,138,...Error!
  whether Rom boot is required for at91rm9200dk board...

You just need U-Boot, nothing else, but please use current code.

Best regards,

Wolfgang Denk