T221-C PCIe timing card

Implement nanosecond-level server timing solution

The T221-C PCIe timing card is a high-performance time synchronization solution suitable for data centers, industrial automation, and telecommunications. By integrating a high-precision GNSS receiver and a highly stable clock (such as an OCXO or atomic clock), it achieves nanosecond-level time synchronization and reliable holdover performance. It supports multiple time reference sources (such as PPS and TOD) and provides time synchronization and interrupt signals to the host via a PCIe interface. Its FPGA architecture combines open source and proprietary IP cores, allowing for flexible customization and compatibility with time distribution protocols such as IEEE 1588 (PTP). The timing card provides effective security mechanisms to prevent GNSS interference and features a standardized PCIe slot for easy integration and deployment.

Applicable fields: scientific research measurement, communications, electricity, data centers, industrial automation, etc.

Important Features

  • Support GPS and Beidou receivers
  • Supports time distribution protocols such as IEEE 1588 (PTP)
  • 20 nanosecond synchronization accuracy suitable for modern time-sensitive network needs
  • Support external IRIG, TOD, 1PPS input
  • Easy integration using standard PCIe slots
  • Support external timestamp and signal generation
  • FPGA architecture provides flexibility and scalability

Important Features

Product FeaturesSpecification nameIndicator parameters
Input signalsatellite timingGPS, BD multimode receiver; supports L1 and B1 frequency points; synchronization accuracy ≤ 30ns(RMS); connection method SMA.
PTP1 way; IEEE1588v2-2008; Accuracy better than 100ns (back-to-back); Transmission mode UDP, ETH; Timing mode E2E, P2P; Connection mode RJ45 (customizable SFP); Supports SyncE master-slave mode.
IRIG-B (optional)1 way (DC); RS422; IEEE1344/GJB2991-2008; phase shift ±1000ns; synchronization accuracy better than 100ns.
1PPS+TOD (optional)1 way; TTL (1PPS)/RS232 (TOD); Format ZDA statement, NMEA0183; Synchronization accuracy better than 100ns.
Output signal 1PPS Pulse1 way; TTL; Accuracy ≤ 30ns (RMS locked); Pulse width 1~999ms settable; Phase shift ±1000ns; SMA 50Ω.
PTP1-way; IEEE1588v2-2008; accuracy better than 100ns (back-to-back); UDP, ETH; E2E, P2P; RJ45 (customizable SFP).
NTP2 ways (shared with PTP interface); V1/V2/V3/V4; support MD5 encryption; precision ≤ 10ms; performance ≥ 10000 times / s.
IRIG-B (optional)1 way (DC); RS422; IEEE1344/GJB2991-2008; phase shift ±1000ns.
TOD (optional)1 way; RS232; ZDA statement, NMEA0183.
10MHz (optional)1 channel; sine wave; amplitude ≥ 5dBm; SMA 50Ω.
Software Featurescyclicality is interrupted4 channels independent setting; period 100us~10000s; step 1us.
Timer alarm interrupt4-channel independent setting; 1us step.
Other FunctionsPC synchronization, API to read board time, webpage online upgrade.
System Support1-way support for Windows 64/32 bit, Linux, Kirin operating systems; provides drivers and API interface functions; can be customized for VxWorks, Windows RTX and other operating systems.
bus interfaceX1, compatible with X4/X8/X16; GEN2 (5Gbps), compatible with GEN1 (2.5Gbps), GEN3 (Gbps).

System Block Diagram

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