TMS320F280023: DCSM使用问题

1、import  dcsm_security_tool，编译选择为CPU1_FLASH，增加CPU中断，GPIO_togglePin以观察程序运行情况。

2、添加安全区配置，程序不加密。——正常

3、再修改密码如下。MCU重新下电，程序工作运行未见异常。

.sect "dcsm_zsel_z1"
.retain
.long 0x000000F0 ;Z1-EXEONLYRAM
.long 0x0000FFFF ;Z1-EXEONLYSECT
.long 0x00005500 ;Z1-GRABRAM
.long 0xAAAA5555 ;Z1-GRABSECT

.long 0xFFFFFFEE
.long 0x47FFFFFF
.long 0xFFFFFFFF
.long 0xFFFFFFFF

4、在Debug-->Flash Setting中配置正确的密码，连接出错。改用Uniflash操作，提示相同

 [ERROR] C28xx_CPU1: Error connecting to the target: (Error -1156 @ 0x0) Device may be operating in low-power mode. Do you want to bring it out of this mode? Choose 'Yes' to force the device to wake up and retry the operation. Choose 'No' to retry the operation without waking the device. (Emulation package 12.7.0.00059)

问题：

在操作pswdlock之前，应该能够连上并解锁MCU，请问为何出现上面的错误提示