TMS320F2800132: The controller is not getting start when we connect adc input on pin 5 (A3,C5/GPIO242) of 48 pt package

Part Number: TMS320F2800132

Tool/software:

Dear Sir,

     

As per above this is schematic of my board ,  when am connecting the input (at present 2.5v) at pin 5 (A3,C5/GPIO242), When power off/on my controller program is not getting started  and when i touch this pin or reset pin it gets started and also when this pin is left unconnected the controller is working fine at every power on/ off.. i have connected 2.2kohm and 10nf capacitor at reset pin .   And i am configuring pin 5 as analog input.

Please help

With Reagrds

Yusuf