Motorola USB08 - page 205

Universal USB Device Driver (USBIO)
Programming Interface
USB08 Evaluation Board Designer Reference Manual
MOTOROLA Universal USB Device Driver (USBIO) 205
USBIO_FRAME_NUMBER
The USBIO_FRAME_NUMBER structure contains information about the
USB frame counter value.
Definition typedef struct _USBIO_FRAME_NUMBER{
ULONG FrameNumber;
} USBIO_FRAME_NUMBER;
Members FrameNumber
Contains the current value of the frame counter maintained by the
USBD.
Comments This structure is an output of
IOCTL_USBIO_GET_CURRENT_FRAME_NUMBER (page 168)
requests.