Cypress CyUsb3.sys Programmer’s Reference - KBA99226

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    Where do I get detailed information about Cypress’s CyUsb3.sys driver?



    CyUsb3.sys is a kernel-mode USB function driver, licensed for distribution ONLY with Cypress USB products and products that employ Cypress USB chips.

    A detailed CyUsb3.sys Programmer’s Reference manual (CyUSB.pdf) is available in documentation folder of FX3 SDK. It can be found in the following default SDK installation path: 

    64-bit Windows:

    C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\doc\SuiteUSB

    32-bit Windows:

    C:\Program Files\Cypress\EZ-USB FX3 SDK\1.3\doc\SuiteUSB