confusion about ucd3138

it is the first time i use ucd3138.

firstly, I got a 3138evm board and an USB interface so i can sure that all physical connections are fine.

secondly, when i use a new(blank) ucd3138, downloading with fusion designer, the download process is failed with "no DEVICE ID in the X0.file"

the new 3138 can be detected perfectly. in my program, there is no need for pmbus. therefore i do not use the pmbus part code.

should the pmbus code be used in the program when i want to down load the code through the pmbus interface?

or through the jtag interface can download without PMBUS code?

THKs for help

Hi

   如果你是用fusion designer, 是需要用到PMBUS接口的，相关操作，你或可以参考TI的评估板：

   http://www.ti.com.cn/cn/lit/ug/sluuak4/sluuak4.pdf   （第44页以及之后）

硬件没有问题了。我是问软件。例如我想让一个灯亮然后灭，最简单的GPIO应用，是不是在软件里面要有PMBUS的程序？

我已经下载了3138的firmware，但在ccs3.3编译出错。这个firmware怎么用.

Hi

   目前TI提供数字芯片编程要么就是用fusion designer，这个之前提到。

   另外一种参考如下：  http://www.ti.com.cn/cn/lit/an/slua654/slua654.pdf

请问解决了吗？我也遇到同样的问题了。