Serial Express Cards DSPXP-100

PRODUCT FEATURES • I/O notebook expansion - adds PCIe serial ports • Built-in 1024-byte FIFOs buffers boost data transmit/receive speed • Baud rates up to 921.6 Kbps • Hot plug & play, hot swapping capabilities • Installs in any 34mm and 54mm Expresscard slots • Supports PCI Express Base Specification Revision 1.1a

PCI ExpressCard technology is emerging with faster speeds and better Ordering Information efficiency than typical PC cards, connecting high-bandwidth peripherals to Model Number Description notebooks and other portables. The serial ExpressCard’s credit-card form DSPXP-100 2-port RS-232 Express Card factor provides a smaller, faster and more desktop-friendly format.

Since laptops often do not provide the number and variety of built-in serial I/O ports available on a desktop PC, these one, two and four port cards can Specifications support I/O expansion and connectivity to serial devices in mobile laptop Serial technology applications. ExpressCard Standard, PCI Express-based Designs Bus Interface Specification, Revision 1.1 compliant interface Baud Rate 921.6 kbps per port This 34mm PCI ExpressCard can be used in either 34 or 54mm slots. An UART 16450/550/750-compatible register set included 54mm adapter improves the fit and durability of 34mm cards in Data FIFO 1024-bytes larger 54mm slots and helps the card withstand normal or accidental stress Supports 5, 6, 7, 8. and dislodging from the slot. Data Bits Supports even, odd, mark, space & no parity. Supports 1, 1.5 & 2 stop bits O/S Support Windows XP/Vista/7, 32 & 64 bit Ports/Connectors DSPXP-100: 2, RS-232, DB9 Male Environmental Operating Temperature 0 to +70 °C Storage Temperature -50 to +80 °C Operating Humidity 10 to 90% Approvals / Certifications DSPXP -100 TIA-232-F (RS-232) compliant About PCI ExpressCards Agency Approvals FCC, CE, RoHS The PXP card series was designed with a PCI Express (PCIe) interface rather than using USB controller interfaces. The PXP series is a great solution to connect to existing peripherals and maintain compatibility and functionality with current application software.

Advantages of a PCIe-based ExpressCard design are in the interface to the laptop’s motherboard. The PCIe bus interface is the successor to the PCI bus, which in turn was the successor to the ISA bus to which built-in ports were originally attached. As such, the ExpressCard adapter utilises a PCIe- based design and can still directly use I/O space addresses and interrupts, thus more closely emulating built-in ports than can be done via USB-based design.

Moreover, because there is no USB stack for the drivers to contend with, throughput can be higher and latency will be lower (significantly in many cases). Due to improved data transfer rate, the ExpressCard is more efficient for multi-tasking operations. The PXP series supports data rates of up to 921.6 Kbps, providing steady flow of data throughput.

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