USB superspeed peripherals Forum Discussions

Hi Support,
Thank you for your usual support.

While designing the HX3, I faced the following questions while checking below AN.
https://www.infineon.com/dgdl/Infineon-AN91378_HX3_Hardware_Design_Guidelines_and_Schematic_Checklist-ApplicationNotes-v03_00-EN.pdf?fileId=8ac78c8c7cdc391c017d073c6ed2607c

* 5V power supply line of the DS port passes through a discharge resistor instead of a discharge FET. Therefore, it takes about 10 seconds to discharge. Is this a problem?

In addtion,I also have a question about the following questions.
AN P22 "Layout checklist"
"7:Are the USB SS and HS signal lines matched in length?"

* Is equal length wiring necessary for all three pairs (ex: US-D*, US-RX*, US-TX*)?
We are doing pattern wiring considering that only equal length wiring of pairs (P and N) is sufficient.Therefore the pairs are not wired with the same length. Is this a problem?

Could you please answer above two questions??

Best regards,
Koki

Hi,

simple question , related to CX3.

when void CyU3PDmaSocketDisable (uint16_t sckId,uint8_t mode) fails because the CY_U3P_ENABLED stays enabled...

what must be done to clear this bit correctly ? I cannot find any correct solution for now. The dead loop inside function is stalling the CX3 forever in this case : 

value &= ~(CY_U3P_GO_ENABLE | CY_U3P_WRAPUP);
glDmaSocket[ip][sck].status = value;
while (glDmaSocket[ip][sck].status & (CY_U3P_ENABLED)); // what can be done if CY_U3P_ENABLED STAYS enabled ??

I must say that I reach this case in one of our design so this is not theoritical speaking. This function is called inside DmaReset function. I just want to reset the dma channel correctly at this point but because of this behavior, this is not reliable.

Library used is latest available, 1.3.4

Thank you for your help,

Best Regards.

I am conducting a loopback experiment with USB3.0, and the loopback function of CYUSB3014 has been implemented. Now I want to burn the loopback test program into the flash memory chip N25Q128 for solidification, but an error occurred, as shown in the figure. When I followed the steps, the error message of Programming of SPI FLASH Erase Failed was displayed in the bottom left corner of the USB Control Center. How can I solve this situation

Hi,
I implement the Fx3-softreset Api and it take  around 4 seconds for re-initialization the device in application code.
This is  because I add the CyU3PThreadSleep() in the Firmware. 

For optimization purpose Can I remove the Sleep and another way to do that ?

After the Soft-rest Host application will initialize the device and then send the vendor request .
Steps are as follow
1) USBDevice = new CCyUSBDevice(NULL, CYPRESS_GUID, true);
2) USBDevice->DeviceCount()  // check for number of devices
3) USBDevice->Open(Device_No);
4) USBDevice->EndPointCount();

Also give suggest  on Host application for softreset optimization.

Hello all,

             I'm stuck on how to interface ov5640 sensor with FX3, so is there any basic source code for me to start working on this.

The ov5640 board I'm using  is this https://www.waveshare.com/wiki/OV5640_Camera_Board_(C)

Regards,

Nolan

Hello, 

I am developing program to run and control my device under Linux distribution, where I want to control my device in program runs on linux. What I need to have in order to complete the program. 

I have seen the libusb library I can use but is there anything Cypress provide to have better option then libusb?

Thank you,

-Dhrumil 

Hello world,

                I'm trying to migrate from External clock to internal clock for Sensor interfaced with CX3, what are the changes needs to be done in CX3, if only CyU3PMipicsiCfg_t structure need to be changed can we do that with out using any tool?

Isn't there any  way to control these parameters, without CX3 MIPI configuration utility tool?

Regards,

Nolan