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Question about circuit diagram of JTAG


I am using a MSP430f2xxx series microcontroller... i wanted to know if there is any specific circuit diagram for the JTAG connection; i was browsing some websites where they have mentioned  pull ups on the TDI and TDO pins of the 4-wire JTAG connections.. is there any specific requirement for MSP430 devices? 

secondly, if the JTAG connector is not always hooked up to the JTAG pins, should the internal pull up or pull down resistors be enabled?

Can some1 plz help me?


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