CyPress Benicia USB启动设备

大家好，我遇到了一个关于CYUB3014的问题。
我设计了一个带有CYSUB3014 BZXI的PCB，PCB的示意图几乎是我以前的项目复制的（项目中CYUSB3014的一部分工作得很好）。
所以最近我开始调试我的新PCB。
我检查了CYUSB3014（VBUS，1.2V，3.3V）的电压，检查了没有短路的PMODE引脚。
pMOD[2:0]＝0Z1为SPI开机。（PMODE引脚上拉/下注册与FPGA没有连接）
当我在电路板上插入USB 3.0电缆时，“CyPress贝尼西亚USB启动设备”显示在控制中心的列表上。这是非常奇怪的，因为我以前从未见过这个信息（我已经设计了几个关于CYUB3014的PCB，所有的工作都很好）。
然后尝试将SLAVEFIFO.IMG编程为SPI，控制中心显示“SPI FLSH编程成功”。
我回复了有线电视，但“CyPress贝尼西亚USB启动设备”仍然显示在名单上……
我检查了两个相同的板，现象是一样的。
因此，我有一些尝试：
1。更改新的SPI闪存
2。交换SPI闪存在我以前的项目以前的董事会和新的董事会
三。将pMOD[2:0]改为Z11
上述尝试已经尝试过，但“CyPress贝尼西亚USB启动设备”仍然显示在名单上……
所以…我不知道问题在哪里。
有人能给我一个提示吗？
谢谢！！



     以下为原文
  Hello everyone, I am stuck on a problem about cyu***3014.

I designed a PCB with cyu***3014-BZXI , the schematic of the PCB is almost copied by my previous project (the part of cyu***3014 in that project was working well so far).

So recently I start to debug my new PCB.

I have checked the voltage of cyu***3014 (vbus, 1.2v, 3.3v), have checked pmode pins without short circuit.
The pmode[2:0]  = 0Z1 for SPI boot first.(pmode pins are pull UP/DOWN with register and no connected with fpga)

When I plug u***3.0 cable on the board, 'Cypress Benicia USB Boot Device' is shown on the list in Control Center. This is very strange because I never seen this info before( I have desinged several PCB about cyu***3014 and all work well ).
Then I try to program Slavefifo.img to SPI, and the control center shows "programing of SPI FLSH succeeded".
I replug the cable but 'Cypress Benicia USB Boot Device' still show on the list......

I checked two same board , the phenomenon are same.

Therefore, I have some attempt :
1. change new SPI FLASH
2. exchange SPI FLASH between previous board of my previous project and new board in this time
3. change pmode[2:0] to Z11

The above attempts have been tried but 'Cypress Benicia USB Boot Device' still show on the list......

So... I have no idea where the problem might be.
Could anyone give me a cue for this?

thanks!!