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PC/104-PLUS USB 2.0 CARD OFFERS 40X SPEED INCREASE
24 February 2005 - WinSystems
| WinSystems today introduces the PPM-USB2, a high-speed, 4-port PC/104-Plus Universal Serial Bus 2.0-compliant (USB2.0) module. This add-in module is 40 times faster than USB 1.x implementations and supports signaling up to 480 Megabits per second (Mbps). The board targets industrial applications that require a variety of USB-compatible peripheral devices. It supports 1.5 Mbps low-speed (LS), 12 Mbps full-speed (FS) and high-speed (HS) 480 Mbps categories on any port on the board. With the HS capability, new applications are open for high-speed network peripherals such as storage, imaging, video, and communication devices. |
The PPM-USB2 module uses the NEC (Mountain View, CA) uPD720101 USB2.0 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 unique quality of the controller is that its 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. This means that different speed USB devices can be connected without speed or performance compromises on any channel. The PPM-USB2 supports hot insertion and removal of the USB cables. A smooth turn on feature eliminates in-rush current induced voltage drops during hot-plug events. Also, all ports have over-current protection provided by two National Semiconductor (Santa Clara, CA) LM3526 dual power switches. During a short-circuit/over-current event, the switch dissipating excessive heat is turned off, allowing the second switch to continue to function uninterrupted. A fault on one channel will not affect the other nor will it disrupt power supplied to other PC/104 boards in a stack. No fuses need to be replaced since protection is done electronically. Each of the ports has a USB 2.0 Type A connector for easy connection and installation. 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. The board draws 250 mA (typical) at +5V and will operate from -40? to +85?C for harsh COTS environments.
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About: WinSystems
Founded in 1982, we manufacture and distribute embedded computers for use in industrial applications. Our products include embedded PC-compatible single board computers, memory boards, input/output (I/O) and enclosures based upon the STD Bus and PC/104 Bus standard architecture.We offer three product families: Embedded PCs. We design both busless embedded single board computers (SBCs) with PC/104 and PC/104-Plus expansion and computers with a hybrid of both STD Bus and PC/104 Bus support. These units are optimized for low cost and high functionality by incorporating all of the basic functions of a computer on a single circuit card. These PC/104, PC/104-Plus and STD Bus expandable PCs embed the PC architecture in space and power sensitive industrial applications. We standardize this hardware and software around the broadly supported PC architecture to save the embedded systems designers substantial development costs and risks plus shorten their time-to-market. STD Bus. As the approved IEEE-961 standard microcomputer bus, the STD Bus is popular worldwide. The STD Bus has a number of advantages over other bus architectures used in industrial applications such as the PC Bus and Multibus. Its simple interface, smaller card size (4.5” x 6.5”); solid, nearly square peripheral cards, and strong card mounts, tolerate shock and vibrations making the STD Bus ideal for rugged industrial enviroments. PC/104 Bus. The PC/104 standard defines a compact, self-stacking, modular form-factor bus for embedding IBM PC and PC/AT compatible system functions within embedded microcomputer applications. The PC/104 modules' small size (3.6” x 3.8”) and low power requirements (typically 1-2 watts per module) make them ideally suited to embedded control applications. Distribution: Direct sales force. Markets: Orginal Equipment Manufacturers (OEMs) and systems integrators selling to industrial, manufacturing, transportation, communication and military industries, or other markets that require electronic bus products with rugged durability, performance and a long system life span. |
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