Learn how to optimise USB-C for your designs at 18 May's USB-C PD Webinar.
Click here to register.

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

Not applicable

Hi everyone.


I'm using old ezusb.sys driver to communicate with CY7C68013 USB chip.


Where can i find a documentation on a ezusb.sys?


I faced with some problems using it. I'm doing send and receive operations (BULK transfer). The question is what happens with packets if they are send to PC but not read with IOCTL_EZUSB_BULK_READ. Does ezusb.sys uses an internal buffer?


Where can i read about theese things?


Thanks in advance.

1 Reply
Not applicable



You may find your information in "Cypress (On C Partition Root)\USB\Doc\".




You need to install "Cypress FX2 Developers Kit" to see these files.