MCS9990 is a single lane multi function PCI Express to 4 dedicated USB2.0 host controllers, dedicated bandwidth per port, allowing 4 dedicated USB2.0 host controllers share 2.5Gbps wide PCI Express bus bandwidth. It supports two modes of operation - USB host mode and OTG mode, selectable through device mode select pins. The USB host mode supports four USB2.0 host ports with four dedicated USB host Controllers. The OTG mode supports two USB2.0 host ports, one USB OTG port and provision to select GPIO or ISA interface. The four USB2.0 host ports are integrated with on-chip transceivers and support four dedicated Enhanced Host Controller Interface (EHCI) and four dedicated Open Host Controller Interface (OHCI). The USB OTG port is integrated with OTG PHY and supports host and device operations. The provisional ISA interface supports up to four serial ports and/or up to two parallel ports. The provisional 24 GPIO pins are programmable as an input or output. PCI Express Single-lane (x1) PCI Express endpoint controller with integrated PHY Compliant with PCI Express base specification revision 1.1 Compliant with PCI Express Card specifications Supports multiple DMA transactions Supports eight PCI Express functions Supports Message TLP (error) generation Supports both legacy and MSI Interrupt mechanism USB Four USB 2.0 Host Ports with on-chip transceivers, can handle High-speed (480Mbps), Full-speed (12Mbps) and low-speed (1.5Mbps) transactions One of the USB 2.0 Host Port can support OTG Feature Four dedicated Enhanced Host Controller Interface (EHCI) controllers Four dedicated Companion Open Host Controller Interface (OHCI) controllers Compatible with Bulk, Interrupt and Isochronous type USB devices Simultaneous operation of multiple high-performance USB devices Supports USB Power Management As a peripheral, OTG supports High Speed (HS)/ Full Speed (FS) Operation As a peripheral, OTG supports the following endpoints One control endpoint One interrupt IN endpoint Two Bulk IN endpoints Two Bulk OUT endpoints General Device Features Device parameters configurable through EEPROM 24 GPIO lines Optionally GPIO lines are configurable to support ISA Interface JTAG Port for board level diagnostics Power Supply requirement:1.2V for Core & 3.3V for IO's On-chip Voltage regulator for 3.3V to 1.2V Package : 128-Pin LQFP, RoHS Operating Temperature : 0 to +70°C or -40 to +85°C

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