TCK(pin9)low,but should be high.please check target hardware

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TCK(pin9)low,but should be high.please check target hardware

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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by gxhchhkd on Mon May 19 20:20:35 MST 2014

最近刚接手一款型号为LPC2131的MCU,使用J-link调试时出现“TCK(pin9)low,but should be high.please check target hardware”情况。在网络上搜索了几天,还是没有解决问题。

我的板子可以确定一下几点时正常的:
1、MCU芯片能使用,采用Flash Magic通过ISP方式能烧录hex文件;
2、JTAG接口连接正确,4.7K下拉电阻正常;

尝试了好久一直没解决这个问题,我想问一下这是什么情况?应该怎么解决?谢谢!
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