96-line PCI Express SUMIT digital I/O module offers high density and high performance on a PC/104-size module - Embedded.com

96-line PCI Express SUMIT digital I/O module offers high density and high performance on a PC/104-size module

The PXM-UIO96-2 from WinSystems is a SUMIT-ISM compatible 96-line digital I/O module designed for high-speed interfacing. The PXM-UIO96-2 offers PCI Express expansion on a 90 x 96mm PC/104-sized module enabled by the stackable high-speed SUMIT connector. The new board monitors all 96 lines for both rising and falling digital edge transitions, latches them, and then interrupts the host processor notifying it that a change-of-input status has occurred. This is the most efficient way of sensing and signaling the CPU of real-time events without the burden of continuous polling of the digital I/O points.

The PXM-UIO96-2 uses a Lattice Semiconductor ECP2M family FPGA with a superset of two WinSystems’ WS16C48 Universal I/O controller cores. It is wired to the PCIe x1 lane of the SUMIT-A connector and automatically selects the first available link. Each I/O line is programmable for input, output, or output with read-back operation. Transition polarity is programmable and enabled on a bit-by-bit basis. Each line's transition is latched so that even short duration pulses will be recognized.

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Each output channel is latched and has an open collector driver (with a pull-up resistor) capable of sinking 12mA of current. This allows direct interface with optically-isolated digital signal conditioning modules such as WinSystems ISM-TRM-ISO-IN and ISM-TRM-ISO-OUT for high-density, real-world I/O support. The board operates over the industrial temperature range from -40°C to +85°C and is RoHS compliant.

The PXM-UIO96-2 includes the SUMIT (Stackable Unified Module Interconnect Technology ) connector that was developed and standardized by the Small Form Factor Special Interest Group (SFF-SIG: www.sff-sig.org). SUMIT is an electromechanical connectorization specification that enables stacking of common serial and legacy chipset expansion buses on PC/104 and other form factor’s I/O modules for next generation embedded systems products.

The PXM-UIO96-2 is priced at $195 (OEM quantities). Delivery is from stock.

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