Queries for design of Hub controller | Cypress Semiconductor
Queries for design of Hub controller
I'm designing a 4 port USB 2.0 multi TT Hub controller and for which I have selected the "CY7C65642" device.
I have referred the datasheet and have following queries:
 CY7C65642 have the option of using the default descriptors to configure the hub with default VID and PID are 0x04B4 and 0x6572. On power up, CY7C65642 has an option to enumerate from the default settings in the mask ROM or from reading an external EEPROM for configuration information.
In my design VID and PID values are not important. Can I go ahead for the design without using EEPROM ?
 I do not have requirement of LED indicators and hence have chosen 28 QFN. Now my query is QFN does not support pin strapping and other pin configuration options. Are the default setting enough to make it work as a multi TT 4 downstream USB port ?
 Assuming I design without EEPROM, what all programming consideration are to be taken, if any ? Also, any hardware setting to be done while designing ?
Reply ASAP... thanks.