请教sm501 usb问题？

请问一下sm501 usb host 1.1，u盘插入没有反映，驱动是siliconmotion 公司提供，在wince 5.0下插拨打印信息如下，请帮忙分析大概会是什么原因呢？

0x83d3e4a8: CHub(Root tier 0)::HubStatusChangeThread - device attached on port 1
0x83d3e4a8: +CHub(Root tier 0)::AttachDevice - port = 1, fIsLowSpeed = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_OPENING_ENDPOINT0_PIPE, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_USING_ADDRESS0, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_RESET_AND_ENABLE_PORT, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_SET_ADDRESS, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_LEAVE_ADDRESS0, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_INITIAL_DEVICE_DESCRIPTOR, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SETUP_CONFIGURATION_DESCRIPTOR_ARRAY, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_INITIAL_CONFIG_DESCRIPTOR, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_CONFIG_DESCRIPTOR, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_DETERMINE_CONFIG_TO_CHOOSE, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - Select Configuration 0 on DEVICE_CONFIG_STATUS_DETERMINE_CONFIG_TO_CHOOSE step
0x83d3e4a8: +SMIVGX::HcdPdd_CheckConfigPower - 0x64mA
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_SET_CONFIG, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_CREATE_NEW_FUNCTION, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_INSERT_NEW_DEVICE_INTO_UPSTREAM_HUB_PORT_ARRAY, failures = 0
0x83d3e4a8: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SIGNAL_NEW_DEVICE_ENTER_OPERATIONAL_STATE, failures = 0
0x83d3e4a8: +USBD:OpenPipe, EP: 0x2, MaxPkt: 64, Type: Bulk
0x83d3e4a8: -USBD:OpenPipe success, hPipe = 629960
0x83d3e4a8: +USBD:OpenPipe, EP: 0x82, MaxPkt: 64, Type: Bulk
0x83d3e4a8: -USBD:OpenPipe success, hPipe = 62A190
0x83d3e4a8: DEVICE!RegReadActivationValues RegQueryValueEx(Drivers\USB\ClientDrivers\Mass_Storage_Class\6\BusPrefix) returned 2
0x83d3e4a8: Command Block Status: Command Failed
0x83d3e4a8: ScsiGetSenseData error:0
0x83d3e4a8: USBDISK6!ScsiModeSense10: Failed to issue MODE SENSE (10) (0)
0x83fcba40: [NOTIFY] HandleSystemEvent 7 /ADD DSK2:
0x83fcbca4: USBDISK6>DSK_IOControl> A device is not attached or does not contain media
0x83fcbca4: Unsupported IOCTL:0x71c24
0x83fcbca4: DSK_IOControl error: 50
0x83fcbca4: Loading partition driver mspart.dll hModule=83D3E7FC
0x83fcbca4: Driver mspart.dll loaded
0x83fcbca4: USBDISK6>DSK_IOControl> A device is not attached or does not contain media
0x83fcbca4: CStore Destructor(000B2010)
0x83d3e4a8: -CHub(Root tier 0)::AttachDevice - port = 1, fIsLowSpeed = 0, address = 1

u盘插入pxa270的usb host（正常），打印信息如下：
0x83e74000: CHub(Root tier 0)::HubStatusChangeThread - device attached on port 1
0x83e74000: +CHub(Root tier 0)::AttachDevice - port = 1, fIsLowSpeed = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_OPENING_ENDPOINT0_PIPE, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_USING_ADDRESS0, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_RESET_AND_ENABLE_PORT, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_SET_ADDRESS, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_LEAVE_ADDRESS0, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_INITIAL_DEVICE_DESCRIPTOR, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SETUP_CONFIGURATION_DESCRIPTOR_ARRAY, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_INITIAL_CONFIG_DESCRIPTOR, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_CONFIG_DESCRIPTOR, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_DETERMINE_CONFIG_TO_CHOOSE, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - Select Configuration 0 on DEVICE_CONFIG_STATUS_DETERMINE_CONFIG_TO_CHOOSE step
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_SET_CONFIG, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_CREATE_NEW_FUNCTION, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_INSERT_NEW_DEVICE_INTO_UPSTREAM_HUB_PORT_ARRAY, failures = 0
0x83e74000: CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SIGNAL_NEW_DEVICE_ENTER_OPERATIONAL_STATE, failures = 0
0x83e74000: +USBD:OpenPipe, EP: 0x1, MaxPkt: 64, Type: Bulk
0x83e74000: -USBD:OpenPipe success, hPipe = 58A80
0x83e74000: +USBD:OpenPipe, EP: 0x82, MaxPkt: 64, Type: Bulk
0x83e74000: -USBD:OpenPipe success, hPipe = 58B60
0x83e74000: DEVICE!RegReadActivationValues RegQueryValueEx(Drivers\USB\ClientDrivers\Mass_Storage_Class\6\BusPrefix) returned 2
0x83e74000: Command Block Status: Command Failed
0x83e74000: ScsiGetSenseData - SenseKey:0x6 ASC:0x28 ASCQ:0x0
0x83e74000: SENSE_UNIT_ATTENTION : ASC_MEDIA_CHANGED
0x83e74000: ScsiTestUnitReady ERROR:20
0x83fcba40: [NOTIFY] HandleSystemEvent 7 /ADD DSK3:
0x83fcbca4: Unsupported IOCTL:0x71c24
0x83fcbca4: DSK_IOControl error: 50
0x83fcbca4: Loading partition driver mspart.dll hModule=83D3E7FC
0x83fcbca4: Driver mspart.dll loaded
0x83fcbca4: Opened the store hStore=000B2CA0
0x83fcbca4: NumSec=259776 BytesPerSec=512 FreeSec=1 BiggestCreatable=1
0x83fcbca4: Partition Part00  NumSectors=259712
0x83fcbca4: MSPART!PD_OpenPartition: dwStoreId=000B2CA0, PartName=Part00
0x83fcbca4: FSD_MountDisk: mounting volumes for hDsk=000B4160
0x83fcbca4: FATFS!MountDisk: BPB_HiddenSectors(63) != 0
0x83fcbca4: FATFS!OpenVolume: access time updates disabled
0x83fcbca4: FATFS!OpenVolume: event logging enabled
0x83fcbca4: FATFS!OpenVolume: automatic scanning disabled
0x83fcbca4: FATFS!OpenVolume: write verify disabled
0x83fcbca4: FATFS!OpenVolume: extra FAT on format disabled
0x83fcbca4: FATFS!OpenVolume: force write through enabled
0x83fcbca4: FATFS!OpenVolume: Codepage = 1
0x83fcbca4: FATFS!OpenVolume: Number of path cache entries = 50
0x83fcbca4: CreateCache: Successful.  Cache Size: 256 KB, Start: 34, End: 2047.
0x83fcbca4: CreateCache: Successful.  Cache Size: 512 KB, Start: 2048, End: 259711.
0x83e74000: -CHub(Root tier 0)::AttachDevice - port = 1, fIsLowSpeed = 0, address = 1
0x83fcbca4: FATFS!InitVolume: FAT version: 32
0x83fcbca4: FATFS!InitVolume: Cluster Size (Sectors): 2
0x83fcbca4: FS: Registering file system Hard Disk, index 6, flags 0x00000000
0x83fcbca4: FS: Mount complete (Hard Disk, index 6, flags 0x00000000)
0x83b978e0: FATFS!FAT_CreateFileW(\desktop.ini) returned 0x0 (2)
0x83b978e0: FATFS!FAT_CreateFileW(\desktop.ini) returned 0x0 (2)