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Original question:

TUSB2046 problem

TUSB2046B: USB device not recognized

Thomas Sui
Prodigy 25 points
Part Number: TUSB2046B
Other Parts Discussed in Thread: TPS2044

I have designed a individual-power non-ganged mode usb hub. 

so upstream usb D+/D- and gnd been connected to the board/ic, but not the usb_5V, we using external input power.

this is the schematic:

Please ignoring the 4D+/4D-, they pull-down to the ground. 

I can see couple things from oscilloscope:

1. crystal stop works in 2 second, 

2. downstream ports have individual 5V, D- is staying 3.3V but D+ has nothing. 

3. upstream port, D+ and D- are sine wave before crystal failed.

4. usb view tree info: usb_reset_failed


    =========================== USB Port3 ===========================

Connection Status        : 0x02 (Device failed enumeration)
Port Chain               : 2-12-3

Device Manager Problem   : 43 (CM_PROB_FAILED_POST_START)
Used Endpoints           : 0

      ======================== USB Device ========================

        +++++++++++++++++ Device Information ++++++++++++++++++
Device Description       : Unknown USB Device (Port Reset Failed)
Device ID                : USB\VID_0000&PID_0001\6&98B719B&0&3
Hardware IDs             : USB\RESET_FAILURE
Driver KeyName           : {36fc9e60-c465-11cf-8056-444553540000}\0012 (GUID_DEVCLASS_USB)
Driver Inf               : C:\Windows\inf\usb.inf
Legacy BusType           : PNPBus
Class                    : USB
Class GUID               : {36fc9e60-c465-11cf-8056-444553540000} (GUID_DEVCLASS_USB)
Enumerator               : USB
PDO                      : \Device\USBPDO-7
Location Info            : Port_#0003.Hub_#0003
Manufacturer Info        : (Standard USB Host Controller)
Capabilities             : 0x64 (Removable, SilentInstall, RawDeviceOK)
Status                   : 0x01806400 (DN_HAS_PROBLEM, DN_DISABLEABLE, DN_REMOVABLE, DN_NT_ENUMERATOR, DN_NT_DRIVER)
Problem Code             : 43 (CM_PROB_FAILED_POST_START)
Address                  : 3
HcDisableSelectiveSuspend: 0
EnableSelectiveSuspend   : 0
SelectiveSuspendEnabled  : 0
EnhancedPowerMgmtEnabled : 0
IdleInWorkingState       : 0
WakeFromSleepState       : 0
Power State              : D3 (supported: D0, D2, D3, wake from D0, wake from D2)

        ---------------- Connection Information ---------------
Connection Index         : 0x03 (Port 3)
Connection Status        : 0x02 (DeviceFailedEnumeration)
Current Config Value     : 0x00 (Configuration 0)
Device Address           : 0x00 (0)
Is Hub                   : 0x00 (no)
Device Bus Speed         : 0x00 (Low-Speed)
Number Of Open Pipes     : 0x00 (0 pipes to data endpoints)
Data (HexDump)           : 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
                           00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02   ................
                           00 00 00                                          ...

        --------------- Connection Information V2 -------------
Connection Index         : 0x03 (3)
Length                   : 0x10 (16 bytes)
SupportedUsbProtocols    : 0x01
 Usb110                  : 1 (yes, port supports USB 1.1)
 Usb200                  : 0 (no, port not supports USB 2.0)
 Usb300                  : 0 (no, port not supports USB 3.0)
 ReservedMBZ             : 0x00
Flags                    : 0x00
 DevIsOpAtSsOrHigher     : 0 (Device is not operating at SuperSpeed or higher)
 DevIsSsCapOrHigher      : 0 (Device is not SuperSpeed capable or higher)
 DevIsOpAtSsPlusOrHigher : 0 (Device is not operating at SuperSpeedPlus or higher)
 DevIsSsPlusCapOrHigher  : 0 (Device is not SuperSpeedPlus capable or higher)
 ReservedMBZ             : 0x00
Data (HexDump)           : 03 00 00 00 10 00 00 00 01 00 00 00 00 00 00 00   ................

    ---------------------- Device Descriptor ----------------------
bLength                  : 0x00 (0 bytes)

      -------------------- String Descriptors -------------------
String descriptors are not available  (because the device has problem code CM_PROB_FAILED_POST_START)
  • 0
    TI__Guru 60870 points

    Hi Thomas,

    It looks like you have an 8MHz crystal installed instead of a 6MHz one, can you confirm that?

    Regards,

    JMMN

  • 0 in reply to JMMN
    Prodigy 25 points

    sorry, it is 6MHZ, i forgot to change that, and also, I have 18pF for crystal instead of 20pF. 

  • 0 in reply to Thomas Sui
    TI__Guru 60870 points

    Ok, that's good.  Can you share the upstream DP/DM waveform?

  • 0 in reply to JMMN
    Prodigy 25 points

    I forgot place resistor(22R) between port to IC 

  • 0 in reply to Thomas Sui
    TI__Guru 60870 points

    Did adding this resistor fix the issue?

    Regards,

    JMMN

  • 0 in reply to JMMN
    TI__Guru 60870 points

    You mean it isn't in the layout?  That shouldn't cause this behavior.

    I need a zoomed out plot that isn't using infinite persistence.  Maybe try triggering on DP going low and or DP going high.

    Regards,

    JMMN

  • 0 in reply to JMMN
    Prodigy 25 points

    The Upstream D+/D-, looks fine

    This is the upstream D+/D-

    The downstream D+/D-:

    I can tell the reset failed at this time, or every time. I dont understand why.

    My components using in reset(C3 and R1): 10nF and 12.1k

    This is the downstream D+/D-, I can tell the reset failed, causing the D+ keeps acting low, and D- keeps acting high. What should I do with my reset. The reset value: 10nF, and 12.1K

  • 0 in reply to JMMN
    Prodigy 25 points

    One more thing, the SUSPND is floating, and when the crystal faliled/ reset acting. the suspnd acting high too.

  • 0 in reply to Thomas Sui
    TI__Guru 60870 points

    The crystal will turn off when the hub suspends, so that is not unexpected.  Does the host detect the hub properly, just not the downstream devices?  can you send USB tree view of the hub instance?

    What kind of devices are you attaching downstream?

    Regards,

    JMMN

  • 0 in reply to JMMN
    Prodigy 25 points

    yes, upstream and hub be detected correctly, only the downstream not recognized, I am testing usb1.1 keyboard and usb 2.0 usb driver.

    
    =========================== USB Port7 ===========================

Connection Status        : 0x01 (Device is connected)
Port Chain               : 2-7

      ========================== Summary =========================
Vendor ID                : 0x0451 (Texas Instruments)
Product ID               : 0x2046
USB Version              : 1.10
Port maximum Speed       : High-Speed
Device maximum Speed     : Full-Speed
Device Connection Speed  : Full-Speed
Self powered             : yes
Demanded Current         : 0 mA
Used Endpoints           : 2

      ========================== USB Hub =========================

        +++++++++++++++++ Device Information ++++++++++++++++++
Device Description       : Generic USB Hub
Device ID                : USB\VID_0451&PID_2046\5&1079772F&0&7
Hardware IDs             : USB\VID_0451&PID_2046&REV_0125 USB\VID_0451&PID_2046
Driver KeyName           : {36fc9e60-c465-11cf-8056-444553540000}\0016 (GUID_DEVCLASS_USB)
Driver                   : \SystemRoot\System32\drivers\UsbHub3.sys (Version: 10.0.19041.1202  Date: 2021-09-14)
Driver Inf               : C:\Windows\inf\usbhub3.inf
Legacy BusType           : PNPBus
Class                    : USB
Class GUID               : {36fc9e60-c465-11cf-8056-444553540000} (GUID_DEVCLASS_USB)
Service                  : USBHUB3
Enumerator               : USB
Location Info            : Port_#0007.Hub_#0002
Location IDs             : PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(7), ACPI(_SB_)#ACPI(PCI0)#ACPI(XHC_)#ACPI(RHUB)#ACPI(HS07)
Container ID             : {828152bb-7808-11ec-ba96-38689328c138}
Manufacturer Info        : (Standard USB HUBs)
Capabilities             : 0x84 (Removable, SurpriseRemovalOK)
Status                   : 0x0180600A (DN_DRIVER_LOADED, DN_STARTED, DN_DISABLEABLE, DN_REMOVABLE, DN_NT_ENUMERATOR, DN_NT_DRIVER)
Problem Code             : 0
Address                  : 7
HcDisableSelectiveSuspend: 0
EnableSelectiveSuspend   : 0
SelectiveSuspendEnabled  : 0
EnhancedPowerMgmtEnabled : 0
IdleInWorkingState       : 1
WakeFromSleepState       : 0
Power State              : D0 (supported: D0, D1, D2, D3, wake from D0, wake from D1, wake from D2)

        ------------------- USB Hub Descriptor -----------------
bDescriptorLength        : 0x09 (9 bytes)
bDescriptorType          : 0x29 (Hub Descriptor)
bNumberOfPorts           : 0x04 (4 Ports)
wHubCharacteristics      : 0x0009
 Power switching         : Individual
 Compound device         : No
 Over-current protection : Individual
 TT Think Time           : At most 8 FS bit times
 Port Indicators         : Not supported
bPowerOnToPowerGood      : 0x32 (100 ms)
bHubControlCurrent       : 0x64 (100 mA)
DeviceRemovable          : 0x00
 Bit 0                   : 0 (reserved, any value)
 Bit 1                   : 0 (Device at Port 1 is removable)
 Bit 2                   : 0 (Device at Port 2 is removable)
 Bit 3                   : 0 (Device at Port 3 is removable)
 Bit 4                   : 0 (Device at Port 4 is removable)
 Bit 5                   : 0 (unused, must be 0)
 Bit 6                   : 0 (unused, must be 0)
 Bit 7                   : 0 (unused, must be 0)
PowerControlMask         : 0x1E
Data (HexDump)           : 09 29 04 09 00 32 64 00 1E                        .)...2d..
HubIsBusPowered          : 0x00 (Self Powered)

      ---------------- Extended USB Hub Descriptor ---------------
HubType                  : 0x02 (Usb20Hub - hub descriptor is defined in USB 2.0 and 1.1 specifications)
HighestPortNumber        : 0x04 (4 Ports)
UsbHubDescriptor         : identical with "USB Hub Descriptor" shown above
Data (HexDump)           : 09 29 04 09 00 32 64 00 1E                        .)...2d..

        ----------------- USB Hub Capabilities ----------------
HubIs2xCapable           : 0 (Is not 2.x capable)
Data (HexDump)           : 00 00 00 00                                       ....

        --------------- USB Hub Capabilities Ex ---------------
HighSpeedCapable         : 0 (No)
HighSpeed                : 0 (No)
MultiTtCapable           : 0 (No)
HubIsMultiTt             : 0 (No)
ArmedWakeOnConnect       : 0 (No)
IsBusPowered             : 0 (No)
IsRoot                   : 0 (No)
Data (HexDump)           : 00 00 00 00                                       ....

        ---------------- Connection Information ---------------
Connection Index         : 0x07 (Port 7)
Connection Status        : 0x01 (DeviceConnected)
Current Config Value     : 0x01 (Configuration 1)
Device Address           : 0x38 (56)
Is Hub                   : 0x01 (yes)
Device Bus Speed         : 0x01 (Full-Speed)
Number Of Open Pipes     : 0x01 (1 pipe to data endpoints)
Pipe[0]                  : EndpointID=1  Direction=IN   ScheduleOffset=0  Type=Interrupt  wMaxPacketSize=1    bInterval=255
Data (HexDump)           : 07 00 00 00 12 01 10 01 09 00 00 08 51 04 46 20   ............Q.F 
                           25 01 00 00 00 01 01 01 01 38 00 01 00 00 00 01   %........8......
                           00 00 00 07 05 81 03 01 00 FF 00 00 00 00         ..............

        --------------- Connection Information V2 -------------
Connection Index         : 0x07 (7)
Length                   : 0x10 (16 bytes)
SupportedUsbProtocols    : 0x03
 Usb110                  : 1 (yes, port supports USB 1.1)
 Usb200                  : 1 (yes, port supports USB 2.0)
 Usb300                  : 0 (no, port not supports USB 3.0)
 ReservedMBZ             : 0x00
Flags                    : 0x00
 DevIsOpAtSsOrHigher     : 0 (Device is not operating at SuperSpeed or higher)
 DevIsSsCapOrHigher      : 0 (Device is not SuperSpeed capable or higher)
 DevIsOpAtSsPlusOrHigher : 0 (Device is not operating at SuperSpeedPlus or higher)
 DevIsSsPlusCapOrHigher  : 0 (Device is not SuperSpeedPlus capable or higher)
 ReservedMBZ             : 0x00
Data (HexDump)           : 07 00 00 00 10 00 00 00 03 00 00 00 00 00 00 00   ................

    ---------------------- Device Descriptor ----------------------
bLength                  : 0x12 (18 bytes)
bDescriptorType          : 0x01 (Device Descriptor)
bcdUSB                   : 0x110 (USB Version 1.10)
bDeviceClass             : 0x09 (Hub)
bDeviceSubClass          : 0x00
bDeviceProtocol          : 0x00
bMaxPacketSize0          : 0x08 (8 bytes)
idVendor                 : 0x0451 (Texas Instruments)
idProduct                : 0x2046
bcdDevice                : 0x0125
iManufacturer            : 0x00 (No String Descriptor)
iProduct                 : 0x00 (No String Descriptor)
iSerialNumber            : 0x00 (No String Descriptor)
bNumConfigurations       : 0x01 (1 Configuration)
Data (HexDump)           : 12 01 10 01 09 00 00 08 51 04 46 20 25 01 00 00   ........Q.F %...
                           00 01                                             ..

    ------------------ Configuration Descriptor -------------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x02 (Configuration Descriptor)
wTotalLength             : 0x0019 (25 bytes)
bNumInterfaces           : 0x01 (1 Interface)
bConfigurationValue      : 0x01 (Configuration 1)
iConfiguration           : 0x00 (No String Descriptor)
bmAttributes             : 0xE0
 D7: Reserved, set 1     : 0x01
 D6: Self Powered        : 0x01 (yes)
 D5: Remote Wakeup       : 0x01 (yes)
 D4..0: Reserved, set 0  : 0x00
MaxPower                 : 0x00 (0 mA)
Data (HexDump)           : 09 02 19 00 01 01 00 E0 00 09 04 00 00 01 09 00   ................
                           00 00 07 05 81 03 01 00 FF                        .........

        ---------------- Interface Descriptor -----------------
bLength                  : 0x09 (9 bytes)
bDescriptorType          : 0x04 (Interface Descriptor)
bInterfaceNumber         : 0x00 (Interface 0)
bAlternateSetting        : 0x00
bNumEndpoints            : 0x01 (1 Endpoint)
bInterfaceClass          : 0x09 (Hub)
bInterfaceSubClass       : 0x00
bInterfaceProtocol       : 0x00
iInterface               : 0x00 (No String Descriptor)
Data (HexDump)           : 09 04 00 00 01 09 00 00 00                        .........

        ----------------- Endpoint Descriptor -----------------
bLength                  : 0x07 (7 bytes)
bDescriptorType          : 0x05 (Endpoint Descriptor)
bEndpointAddress         : 0x81 (Direction=IN EndpointID=1)
bmAttributes             : 0x03 (TransferType=Interrupt)
wMaxPacketSize           : 0x0001 (1 byte)
bInterval                : 0xFF (255 ms)
Data (HexDump)           : 07 05 81 03 01 00 FF                              .......

      -------------------- String Descriptors -------------------
none
  • 0 in reply to Thomas Sui
    TI__Guru 60870 points

    Ok, then the reset to the hub should be fine.  The series resistors should be closer to the device, but even placed incorrectly I would expect to see some toggling on the downstream ports.

    Can you share waveform on the downstream port with a USB 2.0 (HS/FS) device connected?

    Regards,

    JMMN

  • 0 in reply to JMMN
    Prodigy 25 points

    This is the PCB layout

  • 0 in reply to Thomas Sui
    TI__Guru 60870 points

    Hi Thomas,

    Are the blue / yellow lines the upstream port?  And the downstream port are the pink / dark blue ones?  Why are both DP and DM high on the pink / dark blue lines, that is an invalid line state and should not occur.

    Regards,

    JMMN

  • 0 in reply to JMMN
    Prodigy 25 points

    yes, you are right, top two are DP0+/DP0-, and the bottom 2 are DP3+(blue),DP3-(pink).

    I cannot explain the question you asked. I thought the D+ should be always high causing I am testing usb2.0 full speed? if it is not about the reset or crystal, then what can cause it happens? or its might the reset issue?

  • 0 in reply to JMMN
    Prodigy 25 points

    by the way, I did not using SN75420(diode in between the signals, it that might be the case then?

  • +1 in reply to Thomas Sui
    TI__Guru 60870 points

    Hi Thomas,

    This is not a reset or crystal issue since the upstream port of the hub works properly.

    When you plug in a downstream device and it sees VBUS, if it is a FS or HS device, the device will turn on a pullup on DP

    When you plug in a downstream device and it sees VBUS, if it is a LS device, the device will turn on a pullup on DM

    In your system both DP and DM are high which is likely causing the issue.

    Can you disconnect the downstream device, make sure VBUS is at 5V on the port and then capture what happens on DP and DM when the downstream device is connected?

    Regards,

    JMMN

  • +1 in reply to JMMN
    Prodigy 25 points

    Hi JMMN,

    Thank you for your helping, the thing is now the board works, I knew what mistake I made. I used 0.022uF cap in pull-down between TUSB2046 and TPS2044, it is actually 22nF, not 22pF. This is how my test failed. Overall, its not the mistake happened in my board, but the components I used. This is no way we can fix it if I did not double check. 

    Regrads,

    Thomas Sui