STM32U5 USB Driver runs in Timeout in soft reset

I use a STM32U5 and the Keil V8.0.0 USB and MSC driver.
But during initalisation I run in a Timeout in the stm32u5xx_ll_usb.c file at USB_CoreReset for the Core Soft Reset.

I use it as host only in full speed, configuration done in CubeMX.
The clock couldn't be configured to 48MHz as writen in the driver head in USBH_STM32.c.

I add the Handle from the usb_otg.c file to the MX_Device.h file
#define MX_USB_OTG_HS_HANDLE hhcd_USB_OTG_HS

Thanks and kind regards
René

Code with Timeout in stm32u5xx_ll_usb.c

static HAL_StatusTypeDef USB_CoreReset(USB_OTG_GlobalTypeDef *USBx)
{
__IO uint32_t count = 0U;

/* Wait for AHB master IDLE state. */
do
{
count++;

if (count > HAL_USB_TIMEOUT)
{
return HAL_TIMEOUT;
}
} while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_AHBIDL) == 0U);

/* Core Soft Reset */
count = 0U;
USBx->GRSTCTL |= USB_OTG_GRSTCTL_CSRST;

do
{
count++;

if (count > HAL_USB_TIMEOUT)
{
return HAL_TIMEOUT; <============ run into this timeout
}
} while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_CSRST) == USB_OTG_GRSTCTL_CSRST);

return HAL_OK;
}