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TUSB8041: 上行接口能识别，下行接口无反应

Ammon jia
Prodigy 30 points
Part Number: TUSB8041

您好，使用TUSB8041RGCR扩展接口，结果下行接口无法识别。

请帮忙分析一下， 多谢！！！

1.配置接口用的SMBUS,上位机能扫到地址能读出寄存器内容，没有进行配置，均为默认设置。

2.上电时序现在有问题，3.3v先于1.1V先上的

3.连接器端供电正常 5V。

4.部分信号电平正常：USB_VBUS  0.5V            GRSTZ  3.3V

5.如果上电的过程中将GRSTZ强制拉低，卡机后信息如下：

root@FHD3:~# lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

6.如果上电时不去控制GRSTZ信号，开机后信息如下：

root@FHD3:~# lsusb
Bus 002 Device 002: ID 0451:8140 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

  • 0
    TI__Guru**** 295050 points
    Ammon jia 说：
    上电时序现在有问题，3.3v先于1.1V先上的

    这里没有严格的要求，但是上电后需要先复位最少3ms，然后等电压起来稳定后再将GRST拉高。

    所以上电后是要控制GRST。

    您能用示波器测量下供电和GRST的波形吗？看下是否符合这个至少3ms拉低的要求？因为合理的上电时序是芯片能正常工作的前提。

  • 0 回复 Kailyn Chen
    Prodigy 30 points

    您好，

    下图是我测的电源和GRST的波形

  • 0 回复 Ammon jia
    TI__Guru**** 295050 points

    好的，由于这个问题过去比较久，我再看下您的这个问题，尽快给您答复。

  • 0 回复 Kailyn Chen
    Prodigy 30 points

    多谢！

    电源和RST就如我上边附图说的那样，I2C配置成smbus也能读取到寄存器地址，但是系统就是不能识别到芯片。

    今天我们把TUSB8041拆掉也会有一下log：

    root@FHD3:~# lsusb
    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

    这说明这个片子没有正常工作，然后我们飞线到连接器，能正常识别3.0的U盘和2.0的设备。

    除了论坛还有别的联系方式吗，比如skype/QQ/微信/邮箱等

  • 0 回复 Ammon jia
    TI__Guru**** 295050 points

    抱歉没有其他的联系方式呢，每天因为有很多客户来问问题，所以我们也是尽快给您答复。

  • 0 回复 Ammon jia
    TI__Guru**** 295050 points

    您好，关于您的问题 ，我已经咨询了美国工程师，我这边一旦收到回复，会尽快通知给您。

    给您带来不便非常抱歉。

  • 0 回复 Kailyn Chen
    TI__Guru**** 295050 points

    您好，

    1.将SMBUS/SS_suspend上的R363电阻去掉试试。

    2. 下行端口的Vbus是哪里提供的？

    3. 麻烦附上完整的电路。方便分析。

  • 0 回复 Kailyn Chen
    Prodigy 30 points

    VDD_5V 是板子上的常供电

  • 0 回复 Ammon jia
    TI__Guru**** 295050 points

    如果是板子上的5V供电，那很有可能是下行端口电压不够导致下行端口器件无法识。

    您可以尝试低速的USB设备验证下，看看是否还是无法识别。

  • 0 回复 Kailyn Chen
    Prodigy 30 points

    不插入设备都不识别，电压是没问题了，今天搞了个soc的开发板，用soc的开发版验证了一下

    root@FHD3:~# lsusb
    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

    这两条信息不是hub的，而是soc的，这说明上行端口也没识别

  • 0 回复 Ammon jia
    TI__Guru**** 295050 points

    TUSB8041无法识别的话。还得回到上电时序这里，包括GRST的时序：

    注意有两点：

    1： 如果3.3V先于1.1V上电的话，GRST 必须在两个电压都起来稳定之后至少3ms再拉高。

    2.  如果GRST通过电容接地，那么在3.3V上电之，1.1V必须具有稳定的最小10 μs。 

    看了您上面的时序图，3.3V先于1.1V上电，GRST不满足电压稳定之后至少3ms再拉高，

  • 0 回复 Kailyn Chen
    Prodigy 30 points

    我手动短接GRST到地，然后等电源上完之后再释放，还是不行

  • 0 回复 Ammon jia
    TI__Guru**** 295050 points

    收到，我去确认下这个问题。

  • 0 回复 Ammon jia
    TI__Guru**** 295050 points

    SS_Suspend下拉到地的R363去掉再试试。

  • +1 回复 Kailyn Chen
    Prodigy 30 points

    之前不识别的问题已解决做了两个方面的处理：

    1.去掉R363；

    2.将TUSB8041的电源改为SOC uboot起来之后再上电；

    现在出来一个新的问题，有的板子是都能够识别，有的板子只能识别其中一个，有个板子识别其中两个，不识别的口查看log有如下不同：

    识别   ： Port 1: 0000.06a0 Unknown Speed power Rx.Detect
    不识别：Port 2: 0008.04a0 C_OC Unknown Speed Rx.Detect

    详细log如下：

    root@FHD3:~# lsusb -v

    Bus 002 Device 002: ID 0451:8140 Texas Instruments, Inc. TUSB8041 4-Port Hub
    Device Descriptor:
    bLength 18
    bDescriptorType 1
    bcdUSB 3.00
    bDeviceClass 9 Hub
    bDeviceSubClass 0
    bDeviceProtocol 3
    bMaxPacketSize0 9
    idVendor 0x0451 Texas Instruments, Inc.
    idProduct 0x8140 TUSB8041 4-Port Hub
    bcdDevice 1.00
    iManufacturer 0
    iProduct 0
    iSerial 0
    bNumConfigurations 1
    Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 0x001f
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0xe0
    Self Powered
    Remote Wakeup
    MaxPower 0mA
    Interface Descriptor:
    bLength 9
    bDescriptorType 4
    bInterfaceNumber 0
    bAlternateSetting 0
    bNumEndpoints 1
    bInterfaceClass 9 Hub
    bInterfaceSubClass 0
    bInterfaceProtocol 0 Full speed (or root) hub
    iInterface 0
    Endpoint Descriptor:
    bLength 7
    bDescriptorType 5
    bEndpointAddress 0x81 EP 1 IN
    bmAttributes 19
    Transfer Type Interrupt
    Synch Type None
    Usage Type Feedback
    wMaxPacketSize 0x0002 1x 2 bytes
    bInterval 8
    bMaxBurst 0
    Hub Descriptor:
    bLength 12
    bDescriptorType 42
    nNbrPorts 4
    wHubCharacteristic 0x0009
    Per-port power switching
    Per-port overcurrent protection
    bPwrOn2PwrGood 50 * 2 milli seconds
    bHubContrCurrent 0 milli Ampere
    bHubDecLat 0.3 micro seconds
    wHubDelay 3043 nano seconds
    DeviceRemovable 0x00
    Hub Port Status:
    Port 1: 0000.06a0 Unknown Speed power Rx.Detect
    Port 2: 0008.04a0 C_OC Unknown Speed Rx.Detect
    Port 3: 0000.06a0 Unknown Speed power Rx.Detect
    Port 4: 0000.06a0 Unknown Speed power Rx.Detect
    Binary Object Store Descriptor:
    bLength 5
    bDescriptorType 15
    wTotalLength 0x002a
    bNumDeviceCaps 3
    USB 2.0 Extension Device Capability:
    bLength 7
    bDescriptorType 16
    bDevCapabilityType 2
    bmAttributes 0x00000006
    BESL Link Power Management (LPM) Supported
    SuperSpeed USB Device Capability:
    bLength 10
    bDescriptorType 16
    bDevCapabilityType 3
    bmAttributes 0x00
    wSpeedsSupported 0x000e
    Device can operate at Full Speed (12Mbps)
    Device can operate at High Speed (480Mbps)
    Device can operate at SuperSpeed (5Gbps)
    bFunctionalitySupport 1
    Lowest fully-functional device speed is Full Speed (12Mbps)
    bU1DevExitLat 10 micro seconds
    bU2DevExitLat 2047 micro seconds
    Container ID Device Capability:
    bLength 20
    bDescriptorType 16
    bDevCapabilityType 4
    bReserved 0
    ContainerID {8200c002-4c80-0ae7-ab18-8fc2b6c9d000}
    Device Status: 0x0001
    Self Powered

    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Device Descriptor:
    bLength 18
    bDescriptorType 1
    bcdUSB 3.00
    bDeviceClass 9 Hub
    bDeviceSubClass 0
    bDeviceProtocol 3
    bMaxPacketSize0 9
    idVendor 0x1d6b Linux Foundation
    idProduct 0x0003 3.0 root hub
    bcdDevice 5.10
    iManufacturer 3 Linux 5.10.0 xhci-hcd
    iProduct 2 xHCI Host Controller
    iSerial 1 xhci-hcd.0.auto
    bNumConfigurations 1
    Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 0x001f
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0xe0
    Self Powered
    Remote Wakeup
    MaxPower 0mA
    Interface Descriptor:
    bLength 9
    bDescriptorType 4
    bInterfaceNumber 0
    bAlternateSetting 0
    bNumEndpoints 1
    bInterfaceClass 9 Hub
    bInterfaceSubClass 0
    bInterfaceProtocol 0 Full speed (or root) hub
    iInterface 0
    Endpoint Descriptor:
    bLength 7
    bDescriptorType 5
    bEndpointAddress 0x81 EP 1 IN
    bmAttributes 3
    Transfer Type Interrupt
    Synch Type None
    Usage Type Data
    wMaxPacketSize 0x0004 1x 4 bytes
    bInterval 12
    bMaxBurst 0
    Hub Descriptor:
    bLength 12
    bDescriptorType 42
    nNbrPorts 1
    wHubCharacteristic 0x0009
    Per-port power switching
    Per-port overcurrent protection
    bPwrOn2PwrGood 50 * 2 milli seconds
    bHubContrCurrent 0 milli Ampere
    bHubDecLat 0.0 micro seconds
    wHubDelay 0 nano seconds
    DeviceRemovable 0x00
    Hub Port Status:
    Port 1: 0000.0203 5Gbps power U0 enable connect
    Binary Object Store Descriptor:
    bLength 5
    bDescriptorType 15
    wTotalLength 0x000f
    bNumDeviceCaps 1
    SuperSpeed USB Device Capability:
    bLength 10
    bDescriptorType 16
    bDevCapabilityType 3
    bmAttributes 0x02
    Latency Tolerance Messages (LTM) Supported
    wSpeedsSupported 0x0008
    Device can operate at SuperSpeed (5Gbps)
    bFunctionalitySupport 3
    Lowest fully-functional device speed is SuperSpeed (5Gbps)
    bU1DevExitLat 0 micro seconds
    bU2DevExitLat 0 micro seconds
    Device Status: 0x0001
    Self Powered

    Bus 001 Device 002: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
    Device Descriptor:
    bLength 18
    bDescriptorType 1
    bcdUSB 2.10
    bDeviceClass 9 Hub
    bDeviceSubClass 0
    bDeviceProtocol 2 TT per port
    bMaxPacketSize0 64
    idVendor 0x0451 Texas Instruments, Inc.
    idProduct 0x8142 TUSB8041 4-Port Hub
    bcdDevice 1.00
    iManufacturer 0
    iProduct 0
    iSerial 1 280A08591EA6
    bNumConfigurations 1
    Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 0x0029
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0xe0
    Self Powered
    Remote Wakeup
    MaxPower 0mA
    Interface Descriptor:
    bLength 9
    bDescriptorType 4
    bInterfaceNumber 0
    bAlternateSetting 0
    bNumEndpoints 1
    bInterfaceClass 9 Hub
    bInterfaceSubClass 0
    bInterfaceProtocol 1 Single TT
    iInterface 0
    Endpoint Descriptor:
    bLength 7
    bDescriptorType 5
    bEndpointAddress 0x81 EP 1 IN
    bmAttributes 3
    Transfer Type Interrupt
    Synch Type None
    Usage Type Data
    wMaxPacketSize 0x0001 1x 1 bytes
    bInterval 12
    Interface Descriptor:
    bLength 9
    bDescriptorType 4
    bInterfaceNumber 0
    bAlternateSetting 1
    bNumEndpoints 1
    bInterfaceClass 9 Hub
    bInterfaceSubClass 0
    bInterfaceProtocol 2 TT per port
    iInterface 0
    Endpoint Descriptor:
    bLength 7
    bDescriptorType 5
    bEndpointAddress 0x81 EP 1 IN
    bmAttributes 3
    Transfer Type Interrupt
    Synch Type None
    Usage Type Data
    wMaxPacketSize 0x0001 1x 1 bytes
    bInterval 12
    Hub Descriptor:
    bLength 9
    bDescriptorType 41
    nNbrPorts 4
    wHubCharacteristic 0x0009
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
    bPwrOn2PwrGood 50 * 2 milli seconds
    bHubContrCurrent 0 milli Ampere
    DeviceRemovable 0x00
    PortPwrCtrlMask 0xff
    Hub Port Status:
    Port 1: 0000.0100 power
    Port 2: 0008.0000 C_OC
    Port 3: 0000.0100 power
    Port 4: 0000.0100 power
    Binary Object Store Descriptor:
    bLength 5
    bDescriptorType 15
    wTotalLength 0x002a
    bNumDeviceCaps 3
    USB 2.0 Extension Device Capability:
    bLength 7
    bDescriptorType 16
    bDevCapabilityType 2
    bmAttributes 0x00000006
    BESL Link Power Management (LPM) Supported
    SuperSpeed USB Device Capability:
    bLength 10
    bDescriptorType 16
    bDevCapabilityType 3
    bmAttributes 0x00
    wSpeedsSupported 0x000e
    Device can operate at Full Speed (12Mbps)
    Device can operate at High Speed (480Mbps)
    Device can operate at SuperSpeed (5Gbps)
    bFunctionalitySupport 1
    Lowest fully-functional device speed is Full Speed (12Mbps)
    bU1DevExitLat 10 micro seconds
    bU2DevExitLat 10 micro seconds
    Container ID Device Capability:
    bLength 20
    bDescriptorType 16
    bDevCapabilityType 4
    bReserved 0
    ContainerID {8200c002-4c80-0ae7-ab18-8fc2b6c9d000}
    Device Status: 0x0001
    Self Powered

    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Device Descriptor:
    bLength 18
    bDescriptorType 1
    bcdUSB 2.00
    bDeviceClass 9 Hub
    bDeviceSubClass 0
    bDeviceProtocol 1 Single TT
    bMaxPacketSize0 64
    idVendor 0x1d6b Linux Foundation
    idProduct 0x0002 2.0 root hub
    bcdDevice 5.10
    iManufacturer 3 Linux 5.10.0 xhci-hcd
    iProduct 2 xHCI Host Controller
    iSerial 1 xhci-hcd.0.auto
    bNumConfigurations 1
    Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 0x0019
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0xe0
    Self Powered
    Remote Wakeup
    MaxPower 0mA
    Interface Descriptor:
    bLength 9
    bDescriptorType 4
    bInterfaceNumber 0
    bAlternateSetting 0
    bNumEndpoints 1
    bInterfaceClass 9 Hub
    bInterfaceSubClass 0
    bInterfaceProtocol 0 Full speed (or root) hub
    iInterface 0
    Endpoint Descriptor:
    bLength 7
    bDescriptorType 5
    bEndpointAddress 0x81 EP 1 IN
    bmAttributes 3
    Transfer Type Interrupt
    Synch Type None
    Usage Type Data
    wMaxPacketSize 0x0004 1x 4 bytes
    bInterval 12
    Hub Descriptor:
    bLength 9
    bDescriptorType 41
    nNbrPorts 1
    wHubCharacteristic 0x0009
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
    bPwrOn2PwrGood 10 * 2 milli seconds
    bHubContrCurrent 0 milli Ampere
    DeviceRemovable 0x00
    PortPwrCtrlMask 0xff
    Hub Port Status:
    Port 1: 0000.0503 highspeed power enable connect
    Device Status: 0x0001
    Self Powered

  • +1 回复 Ammon jia
    TI__Guru**** 295050 points

    您好，您的问题我们在进一步确认中，如收到答复，会尽快通知给您。

  • +1 回复 Kailyn Chen
    Prodigy 30 points

    找到问题了，这个U口提示过流了，所以断掉了。

  • +1 回复 Ammon jia
    TI__Guru**** 295050 points

    感谢您的反馈。