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JTAG connection on LS1021A

Question asked by Norihiro Michigami on Apr 11, 2016
Latest reply on Apr 11, 2016 by Serguei Podiatchev

Hello NXP team,


Our customer has two LS1024A TWR board.

They could connect JTAG ICE (this ICE is delivered from Japanese company, Computex) on one LS1024A TWR board, but they couldn't on another LS1024 TWR board.


They can find the following information on sticker on the board.

  -CPLD 2.0/SDK v0.4 => JTAG ICE does't work

  -CPLD 2.3/SDK v1.4 => JTAG ICE works correctly.


-CPLD seems to control TRST signal from ICE. I'm not sure, but do you think that the version of CPLD bit stream can affect the operation of JTAG ICE?


-Can they upgrade the bit stream of CPLD on LS1024A TWR?



Norihiro Michigami