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STM32 ULPI PHY - CY7C68003

Posted on September 26, 2014 at 12:42

Dear All,

Has anybody ever tested  Cypress CY7C68003 with the STM32? I would appreciate your feedback. 

#usb #stm32f4 #ulpi
Posted on September 26, 2014 at 14:03

Contact your local ST rep or FAE, or breadboard your concept circuit.

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Associate III
Posted on September 29, 2014 at 11:06

A rule of thumb with STM32 MCUs is, that they have a serious bug with ULPI-s that support Link Power Management, aka, LPM

If theFunction Control Register's bit 7 is reserverd by the ULPI, than it will probably work. TheCY7C68003 should therefore work.

See this thread:

Yuling LI
Posted on August 30, 2017 at 10:53

Hi, I am using 

CY7C68003 with STM32F205, but the USB interface doesn't work. I found 

CY7C68003 contains a USB Interface Control Register(address: 35H) which ISP1705 doesn't have. To enable CY7C68003, this register should be set to 0x04. But I don't know how to read/wirte the ULPI PHY's register through STM32_USB-Host-Device_Lib.