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Copyright (C) 2011-2012 Reserved by Cypress Semiconductor Corporation
GX3 EEPROM Programming User Guide
5.
GX3 EEPROM FAQs
5-1.
The Vendor ID (VID) and Product ID (PID)
5-1-1.
Do we need to register our own VID/PID for our GX3 based
application systems or can we use the Cypress VID/PID?
The answer to the above question really depends on user’s product applications and target
market, which can be different on individual cases. Below gives customers some general
guidelines about whether one can use Cypress’s VID/PID or one should better register its
own one with USB-IF.
1. Cases where it is OK to use Cypress’s VID (04B4h) and PID (3610h)
You may be able to use Cypress’s VID and PID when your GX3 based application
system can simply work with GX3 standard drivers provided by Cypress without any
modification and you don’t have any concern from business and product marketing
perspective to use the same VID and PID on your products as Cypress’s other customers
who are also using Cypress’s VID and PID. Cypress would like to request customers to
inform Cypress sales staffs by sending us email at
beforehand if you
would like to use Cypress VID and PID for your products.
In other words, if your GX3 based application system requires you to modify GX3 driver
on your own or by Cypress support team, you might have to register your own VID and
PID. This can avoid your end customers from going to Cypress web site to download the
GX3 standard driver which may not be suitable to work with the specific GX3 based
application system.
2. Cases requiring you to use your own VID and PID
(1)
Your GX3 based application systems can’t work directly with GX3 standard drivers
which Cypress releases on its web site and your target application system (such as
USB dongle or docking station) may allow your end customers to update the
standalone GX3 driver by themselves after sales. In that case, you MUST assign
your own unique VID and PID for your GX3 based devices.
(2)
For brand name products, you probably don’t want your GX3 based devices to
become compatible with other company’s GX3 based devices. In this case, you
should consider assigning your own unique VID and PID for your GX3 based
devices.