Manufactured bySymmetricom
Product groupPCI Time & Frequency Processor
DescriptionSymmetricom BC635PCI-V2 089-00256-000 Network Time Frequency PCI Sync Card
Key FeaturesIRIG A, B, G, E, IEEE 1344, NASA 36, XR3, and 2137 time code inputs and outputs Simultaneous AM and DCLS time code inputs and outputs 100 ns clock resolution for time requests Programmable <<1PPS to 100MPPS DDS rate synthesizer output/interrupt 1, 5, or 10MPPS rate generator output 1PPS and 10 MHz inputs Three external event time capture/interrupts External event time capture/interrupt Programmable time compare output/interrupt Zero latency time reads Battery-backed real-time clock (RTC) PCI local bus operation Universal signaling (3.3 V or 5.0 V bus) CE(RoHS)-compliant Linux, Solaris, and Windows software drivers/SDKs included
OverviewThe Microsemi bc635PCI-V2 timing module provides unparalleled precise time and frequency to the host computer and peripheral data acquisition systems. Time is typically acquired from time code signals such as IRIG B.Central to the operation of the module is a disciplined 10 MHz oscillator that is either an on-board TCXO (or optional OCXO) or an off-board external oscillator that can provide the timing module’s 100-nanosecond clock. Current time (days to 100 ns) can be accessed across the PCI bus with no PCI bus wait states, which allows for very high-speed time requests. The selected on-board or off-board 10 MHz oscillator drives the module’s frequency and time code generator circuitry. If the input reference is lost, the module will continue to maintain time (flywheel) based on the selected 10 MHz oscillator’s drift rate. If power is lost, a battery-backed real-time clock (RTC) is available to maintain time.Extensive time code generation and translation are supported. The generator outputs either IRIG A, B, G, E, IEEE 1344, NASA 36, XR3, or 2137 in both amplitude modulated (AM) and DC level shift (DCLS) formats. The translator reads and may be used to discipline the 10 MHz oscillator to either the AM or DCLS format of IRIG A, B, G, E, IEEE 1344, NASA 36, XR3, or 2137 time codes.