Re: How to configure Sharc AD21489 FLAG3 as output?

Hi Liu,

Flag pins (FLGx) can be programmed as input or output pins using bit settings in the FLAGS register.

Eg:

bit set FLAGS FLG3O; /* set Flag1 IO output */

bit set FLAGS FLG3; /* set Flag1 level 1 */

bit clr FLAGS FLG3; /* clear Flag1 level 1 */

The status of the flag pins is also given in the FLAGS register.

For core Flag pin multiplexing details , refer to Pg.No  928 of the ADSP-214xx Hardware reference Manula given in the following link :

http://www.analog.com/static/imported-files/processor_manuals/ADSP-214xx_hwr_rev1.1.pdf

Thanks,

Mahesh