PPM-USB2
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Catalog excerpts

PPM-USB2 - 1

FEATURES USB 2.0 supported on PC/104-Plus module which is 40 times greater speed than USB 1.1 NEC uPD720101 host controller supports simultaneous operation of multiple high-performance devices OHCI host and EHCI Host Compliant Cores that are USB 2.0 (480 Mbps) and USB 1.1/USB 1.0 (12 Mbps) compliant Root hub and 4 downstream facing ports onboard All downstream ports handle low-speed (1.5 Mbps), full-speed (12 Mbps), and high-speed (480 Mbps) transactions Supports hot insertion/removal Each port with overcurrent and inrush protection Supports 32-bit 33MHz PC/104-Plus host interface compliant with PCI Rev. 2.2 Power connector for supplemental +5V if required LED on each port for visual status PC/104-Plus compliant board Onboard 3.3V regulator Supports 5V or 3.3V PC/104-Plus Bus Low power Single +5V supply Operates from -40° to +85°C The PPM-USB2 is a high-speed, 4-port PC/104-Plus Universal Serial Bus (USB 2.0) compliant module. This add-in module is 40 times faster than USB 1.x implementations and supports signaling up to 480 Megabits per second (Mbps). It is based upon the NEC uPD720101 USB 2.0 host controller that is supported by a wide range of operating systems including Windows and Linux. FUNCTIONAL CAPABILITY USB 2.0 - USB 2.0 is the next generation of the USB 1.x specification. It contains no large-scale protocol changes, yet enables a data transfer rate of 480 Mbps using existing USB 1.1-compliant cables and connectors. This is almost a 40-times faster data rate and surpasses the data transfer rate of the IEEE1394 Firewire specification (400 Mbps). In USB 2.0, a high-speed (HS) transfer rate (480 Mbps) has been added to the existing full-speed (FS: 12 Mbps) and low-speed (LS: 1.5 Mbps) categories. LS devices include keyboards, mouse devices, joysticks, and other peripherals that operate at a low communications rate. FS devices cover a wide range of fields, including storage-related devices such as CD-ROMs, floppy disk drives, PC card interfaces as well as printers and cameras. With the HS capability, applications are open to highspeed network peripherals such as storage, imaging, video, and communication devices. For the most current information on Hi-Speed USB, go to www.usb.org/developers. USB 2.0 Host Controller - The PPM-USB2 module uses the NEC uPD720101 USB 2.0 Host Controller. It complies with the Universal Serial Bus Specification revision 2.0 and Open Host Controller Interface (OHCI) Specification for full-/low-speed signaling and Intel's Enhanced Host Controller Interface (EHCI) Specification for high-speed signaling. The controller also provides a direct Peripheral Component Interconnect (PCI) to the PC/104-Plus bus. The 720101 architecture is optimized to deliver both high-performance and PCI bus efficiency with the lowest power and smallest size. There are two OHCI controller cores for full-/low-speed signaling and one EHCI host controller for high-speed signaling. A root hub with 4 downstream facing ports is shared by the OHCI and EHCI controller cores. All downstream facing ports can handle high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) transactions. Port Protection - Each port has overcurrent and in-rush protection provided by two National Semiconductor LM3526 power switches. One LM3526 protects Ports 1 and 2 while the other protects Ports 3 and 4.

Open the catalog to page 1
PPM-USB2 - 2

PC/104-Plus Interface - The PPM-USB2 is designed to offer simultaneous USB 2.0 operation on four ports. The chip has a PCI bus master interface and is compliant with the PCI Bus Specification Revision 2.2. It provides 32-bits of addressing and data, as well as the complete control interface to operate on the PC/104-Plus bus. The PPM-USB2 is designed to support either +5V/3.3V tolerant or +3.3V only PC/104-Plus signaling. A jumper block selects the voltage range. There is also a jumper block on board to select the module slot position. The +5V input power and ground for the board is supplied...

Open the catalog to page 2

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