EHCI_HCCPARAMS
ReadCapReg32(EHCI_HCCPARAMS));
if (EHCI_HCCPARAMS_FRAME_CACHE(ReadCapReg32(EHCI_HCCPARAMS)))
fThreshold = 2 + EHCI_HCCPARAMS_IPT(ReadCapReg32(EHCI_HCCPARAMS));
uint32 extendedCapPointer = ReadCapReg32(EHCI_HCCPARAMS) >> EHCI_ECP_SHIFT;
bool hasPerPortChangeEvent = (ReadCapReg32(EHCI_HCCPARAMS)