ISP1561 Overview
The ISP1561 is a Peripheral ponent Interconnect (PCI)-based, single-chip Universal Serial Bus (USB) Host Controller. It integrates two Original USB Open Host Controller Interface (OHCI) cores, one Hi-Speed USB Enhanced Host Controller Interface (EHCI) core, and four transceivers that are pliant with Hi-Speed USB and Original USB. The functional parts of the ISP1561 are fully pliant with Ref.