USS-344

Advance Data Sheet, Rev. 9 June 2001 USS-344 QuadraBus™ Four-Host PCI-to-USB OpenHCI Host Controller Features I 32-bit, 33 MHz PCI interface compliant with PCI Local Bus Specification Revision 2.2 I Four downstream USB ports I Each USB port dedicated to providing full USB band- width to the attached device I Full compliance with Universal Serial Bus Specifica- tion Revision 1.1 I OpenHCI Open Host Controller Interface Specifica- tion for USB Release 1.0a compatible I Fully compatible with Microsoft Windows 98/95/Win- dows NT * standard OpenHCI drivers I Fully compatible with Mac† OS 8.5 and 8.6 I Integrated dual-speed USB transceivers I 3 V or 5 V switchable PCI signaling I Low-power mode and wake-up compatible with PCI Power Management Interface Specification Revision 1.1 I Supports up to 127 devices per port I Supports peripheral hot swap and wake-up I Support for legacy keyboard and mouse I 128-pin TQFP package I Full 12 Mbits/s bandwidth per port I Evaluation kit: — PCI card — Data sheet I 0.25 µm technology Applications I Seamless integration with 3 V or 5 V PCI-based computer products I Supports all USB compliant devices and hubs I Simultaneous operation of multiple high-performance devices Description The Agere Systems Inc. USS-344 QuadraBus provides a single-chip four-host PCI-to-Universal Serial Bus (USB) solution. The USS-344 interfaces directly to any 32-bit, 33 MHz PCI bus and is ideal for either onboard applications or add-in card applications. It can easily b...