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28027 一直处于Reset状态,无法烧写

Other Parts Discussed in Thread: CONTROLSUITE

3.3V加了一个上拉电阻接到28027的XRS(复位)脚,除了电源以及JTAG,其他什么别的无关的电路都没有加。

烧写的时候显示ailed Software Reset: (Error -1137 @ 0x0) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 5.0.747.0) 
C28xx: Trouble Reading PC Register: (Error -1137 @ 0x0) Device is held in reset. Take the device out of reset, and retry the operation. (Emulation package 5.0.747.0) 。

测试发现确实XRS脚确实是低电平,不能理解为什么一个高电平接了一个上拉电阻之后接到XRS,竟然会变低。(焊了三块板子都是这样,基本确认不是焊接问题)

然后直接将3.3V接到XRS脚,上电XRS确实是高电平了,但是烧写的时候 显示data verification failed at address 0x008000,  因为用的是controlsuite的例程觉得cmd文件以及程序没有问题 

求助