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
