Java Card

Hi ,
I dont know whether this is the right place to post this or not. I am having a doubt on PPS message response . PPS stands for Protocol Parameter Selection.
The ATR I am getting for a contact card is 3B E9 00 00 81 31 FE 45 4A 43 4F 50 31 30 56 32 32 A3
Which says
3B: stands for Direct convention [format character]
And the Interface bytes fallowing format bytes are,
E9 :says TB1 ,TC1,TD1 will be fallowing E9.
00: TB1, 00:TC1
TD1:81 which says protocol selected for communication is T=1 and TD2 is the next interface byte.
TD2=31 , TA3 = FE, TB3 = 45.
History Bytes: 4b 43 4F 50 31 30 56 32 32
TCK = A3

From this ATR we can say TA2 is absent ,so it's possible to select the transmission parameter in the negotiable mode.
I want to know if I send a PPS [Protocol parameter selection ] to select T = 0 can card is able to switch to T=0.
So that I require to use T= 1 only for sending PPS message.
We are designing our on reader with some embedded controller. So in that situation it's difficult to have T=1 for all commands.