CY7C68033 enumeration | Cypress Semiconductor
I am working on a USB drive prototype using cy7C68033 and a NAND flash (Samsung K9KWBG08U1M, 4G byte chip), and found that, upon plug in, the device will be enumerated as "Cypress FX2 - No EEPROM"; however, once I start NX2LP Programmer utility, it will be enumerated as a mass storage device (and drive letter will come out). Firstly I though it was my firmware error and programmed the default firmware (CY3686FW included in the development kit) but the result was the same.
When the device is enumated as "Cypress FX2 - No EEPROM", it has a VID of 04B4 and PID of 8613, which is different from what I programmed using the NX2LP programmer utility, so probably the chip just failed to read the nand flash - am I correct?
Could someone help me to determine what is keeping the chip from working? Thanks in advance.