Networking Adapters
P410G8TS81 TimeSync Server Adapter STS2
8 Port Fiber QSFP 10/1 Gigabit Ethernet TimeSync PCI Express Server Adapter
Silicom’s Time Sync (STS2) P410G8TS81 is a 1/10 Gigabit Ethernet PCI Express Gen4 TimeSync server adapter, designed for X86 Servers and high-end appliances.
The 1/10 Gigabit Ethernet TimeSync PCIe server adapter is based on Intel E810 chipset and best in the industry timing solution targeting 5G Class C wireless base station and carrier-grade systems.
Silicom’s STS2 Support 8 port of 1G/10G capabilities to synchronize host system with external clock source using 1PPS and 10MHz. The STS2 TimeSync server adapter support both 1588v2/PTP and SyncE for high clock accuracy in Master and Slave mode. STS1 design is meeting O-RAN requirements for LLS-C1, LLS-C2 and LLS-C3, modes of operations with both Boundary and Transparent clocks.

Silicom STS line card for 4G and 5G NIC enable real-time data transmission with high timing accuracy at the lowest cost to power 5G DRAN and CRAN edge deployments:
- Support 1588/PTP over IPv4 / IPV6, IEEE1588v2
- Support SyncE /ITU-T G.8262
- T-BC/T-TSC Boundary Clock and TSC Slave Clock /G.8273.2
- T-GM Grand Master /G.8273.1 per G.8275.1 PTP Profile
- PRTC Primary Reference Time Clock Class B/G.8272
- T-TC Transparent Clock /G.8273.3
- 1588 Software Stack and Servo Software in x86

P410G8TS81 TimeSync Server Adapter STS2
8 Port Fiber QSFP 10/1 Gigabit Ethernet TimeSync PCI Express Server Adapter
TimeSync:
- Supports PTP Transparent Clock (TC) Boundary Clock (BC) OC (Master / Slave)
- Supports Grand Master clock per G.8275.1 Class-A PRTC/T-GM
- PTP over IPv4 / IPV6 (IEEE-1588v2) / SyncE
- One step and two step clock modes operation for PTP Master
- 10Mhz and 1PPS programmable output
- Full HW and SW TimeSync solution based on industry leading DPLL, Servo stack and PTP1588
- Incorporated accurate OCXO
- Global Navigation Satellite System (GNSS) receiver include Indians NAVIC (IRNSS) satellites support
- Packet and physical-layer frequency, phase and time synchronization
- Enable 5G/Class C wireless application
LAN and Virtualization Features:
- SR-IOV (Single Root I/O Virtualization): up to 256 Virtual Functions
- Partially Programmable Pipeline and Advanced Traffic Steering
- Intel® Ethernet Flow Director – 8000 On-Die perfect match filters
- 1536 queues/Physical Function (PF), >64 RSS/PF and 256 VMDq/PF
P410G8TS81 TimeSync Server Adapter STS2
8 Port Fiber QSFP 10/1 Gigabit Ethernet TimeSync PCI Express Server Adapter
Silicom Time Sync | |
Profile: IEEE-1588 ( 2008) ( Annex-J.3 Delay Request-Respond Default Profile | Ordinary Clock – Server Ordinary Clock- Client ( including slave only OC) Boundary Clock |
Profile: IEEE-1588 ( 2008) ( Annex-J.4 Peer-to-Peer | Ordinary Clock – Server Ordinary Clock- Client ( including slave only OC) Boundary Clock |
Profile: ITU-T G.8265.1 Telecom Profile for Frequency Synchronization | Telecom Grandmaster Telecom Slave |
Profile: ITU-T G.8275.1 PTP Telecom Profile for Phase with Full timing Support | Telecom Grandmaster ( T-GM) Telecom Boundary Clock ( T-BC) Telecom Time Slave Clock ( T-TSC) |
Profile: ITU-T G.8275.2 PTP Telecom Profile for Phase with Partial timing Support | Telecom Grandmaster ( T-GM) Assisted / Partial Telecom Boundary Clock ( T-BC) Assisted / Partial Telecom Time Slave Clock ( T-TSC) |
Device Types: | Ordinary Clock Boundary Clock Transparent Clock (peer-delay-message exchange) |
References Selection: | Default BMCA (Best Master Clock Algorithm) Alternate BMCA based on ITU G.781 – Synchronization layer functions for frequency synchronization based on the physical layer |
Transport Mappings: | PTP/UDP/IPv4 Annex D PTP/UDP/IPv6 Annex E PTP/Ethernet Annex F |
NIC TS (Time Stamp) granularity: | 1ns |
General Technical Specifications: 8 Ports P410G8TS81-XR | |
Interface Standard: | PCI-Express Base Specification Revision 4.0 (16 GTs) |
Board Size: | Dual slot Standard height add-in card: 167.64mm X 111,15 mm(6.6”X 4.376”) dual slot |
PCI Express Card Type: | x16 Lane, bifurcation |
Voltage: | +12V +/-8% +3.3+/- 8% +3V3VAUX/ +12VAUX |
PCI Connector: | Gold Finger: x16 Lane |
Controllers: | Intel E810-CAM2 |
1588/ SyncE PHY: | (8x10G/1G) |
DPLL: | 1588 / SyncE |
Network ports: | 1xQSFP+, 4xSFP+ |
Management port: | RJ45 on daughter card |
Holder: | Metal Bracket |
Power Consumption: | 25[w] |
Operating Temperature: | 0°C – 45°C (32°F – 113°F) |
Storage: | -40°C–65°C (-40°F–149°F) |
Regulation: | CE, FCC Class B, ROHS requirements. |
QSFP+ 10Gigabit Ethernet Technical Specifications Adapters: | |
QSFP (Small Form Factor Pluggable) supports: | (x4) SFI interfaces supports 10GBase-R PCS and 10 Gigabit PMA in order to connect with QSFP to 10GBase-SR/ LR (MPO) |
10GBase-SR QSFP: IEEE Standard / Network topology: | Fiber 10Gigabit Ethernet |
10GBase-LR QSFP: IEEE Standard / Network topology: | Fiber 10Gigabit Ethernet, 10GBASE-LR (1310nM LAN PHY) |
10GBase-LR QSFP: Cables and Operating distance Up to: | Single-Mode: 10000m at 9um |
P410G8TS81 TimeSync Server Adapter STS2
8 Port Fiber QSFP 10/1 Gigabit Ethernet TimeSync PCI Express Server Adapter
P/N | Description | Notes |
P410G8TS81-XR | 8 Port QSFP 10 Gigabit Ethernet PCI Express Server Adapter | x8 Gen 4, x16 mechanical form factor, FHHL Single Slot |