USB low-full-high speed peripherals Forum Discussions

Hello, brothers

I had a particular headache here:

After I have downloaded the firmware via USB Control Center to the usb chip, following the AN65209-get-start instructions,

my USB Control Center couldn't detect it

• pic1

But my computer can detect this interface，and I can guarantee that I'm using the matching drive

I am using the chip signal that is CY7C68013A that is documentation compliant

so why?

Thank you all for your answers

I have an older USB Had drive controller (CompUSA) that uses a CY7C68300A. When plugged into USB, it is reporting itself as USB/VID_04B4&PID8613. The 04B4 is Cypress but the 8613 is for the CY7C68013 (EZ-USB FX2). It should report as PID8630. This was observed on multiple PCs. 

There seems to be no way to place the device into MFG Mode so that I could use Blaster to investigate. The only option was to lift the power and ground to the external IC2 EEPROM and hope that it would default and report its device ID correctly. Unfortunately, after doing that it still reports as a PID8613. 

The documentation does not appear to say what it should report as while in Mfg Mode.

At this point it is more of a thought experiment and/or trouble shooting exercise.

Any thoughts? Counterfeit chip ?

Thanks

Hi~

I designed a USB-I2C bridge in school with reference to the datasheet of CY7C65211，CY7C65211 is set as the master and a temperature  sensor is set as the slave. 

In "USB-Serial Configuration Utility", I successfully set up its configuration（program succeed).But I don't know how to send the control commands  and  read the data of the temperature  sensor in Windows system. Please kindly tell you in detail which software to download and learn.（‘"TEST UNYILITY"appears to be able to test only data）

thanks.

I'm using I2Cm with CY7C64315 family chip to read/write and external memory (24C64).
It works fine if the memory address is only 7-bit address.

How can I address a 10-bit memory?
The example in the documentation uses only one byte for the address.

Any advice or example are welcome.

Regards,
Anne.

I am looking to create an application that constantly streams in from an FPGA via isochronous transfer via FX2LP.

I am writing the c# source code based on the asynchronous IO section of CyUSB.NET.pdf, as well as the c++ source code for the streamer application and the c# bulk loop source code.

The c++ streamer application provided by the manufacturer streams in correctly, but my application blue screens with a DRIVER_IRQL_NOT_LESS_OR_EQUAL stop code within a minute. (The failed content item is cyusb3.sys. The driver version is 1.2.3.20.)

Is there an incorrect description? How to fix it?

The following is an unsafe thread written in C#.

private unsafe void TransfersThread()
{
    int i = 0;
    int NumPkts = 8;
    int NumQueue = 16;
    int BufSz = IsocInEndPt.MaxPktSize * NumPkts;
    IsocInEndPt.XferSize = BufSz;

    // Setup the queue buffers
    byte[][] cmdBufs = new byte[NumQueue][];
    byte[][] xferBufs = new byte[NumQueue][];
    byte[][] ovLaps = new byte[NumQueue][];
    ISO_PKT_INFO[][] pktInfos = new ISO_PKT_INFO[NumQueue][];

    for (i = 0; i < NumQueue; i++)
    {
         cmdBufs[i] = new byte[CyConst.SINGLE_XFER_LEN + IsocInEndPt.GetPktBlockSize(BufSz) + ((IsocInEndPt.XferMode == XMODE.BUFFERED) ? BufSz : 0)];
         pktInfos[i] = new ISO_PKT_INFO[NumPkts];
         xferBufs[i] = new byte[BufSz];
         ovLaps[i] = new byte[CyConst.OverlapSignalAllocSize];
         fixed (byte* tmp0 = ovLaps[i])
         {
             OVERLAPPED* ovLapStatus = (OVERLAPPED*)tmp0;
             ovLapStatus->hEvent = PInvoke.CreateEvent(0, 0, 0, 0);
         }
    }

    // Pre-load the queue with requests
    int len = BufSz;
    for (i = 0; i < NumQueue; i++)
        IsocInEndPt.BeginDataXfer(ref cmdBufs[i], ref xferBufs[i], ref len, ref ovLaps[i]);

    i = 0;

    while (true)
    {
        fixed (byte* tmp0 = ovLaps[i])
        {
            OVERLAPPED* ovLapStatus = (OVERLAPPED*)tmp0;
            if (!IsocInEndPt.WaitForXfer(ovLapStatus->hEvent, 500))
            {
                IsocInEndPt.Abort();
                PInvoke.WaitForSingleObject(ovLapStatus->hEvent, 500);
            }
        }

        if (IsocInEndPt.FinishDataXfer(ref cmdBufs[i], ref xferBufs[i], ref len, ref ovLaps[i], ref pktInfos[i]))
        {
            // Add code to examine each ISO_PKT_INFO here
        }
        // Re-submit this buffer into the queue
        len = BufSz;
        IsocInEndPt.BeginDataXfer(ref cmdBufs[i], ref xferBufs[i], ref len, ref ovLaps[i]);

        i++;
        if (i == NumQueue)
            i = 0;
    }
}