Networking Adapters
PE425G4TSi81L TimeSync Card STS1
25Gigabit Ethernet TimeSync PCI Express Gen4 Server Adapter
Silicom’s Time Sync (STS1) PE425G4TSi81L is a 25 Gigabit Ethernet PCI Express Gen4 TimeSync server adapter, designed for X86 Servers and high-end appliances.
The 25 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 STS1 Support 4 port of 10G/25G capabilities to synchronize host system with external clock source using 1PPS and 10MHz. The STS1 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

PE425G4TSi81L TimeSync Card STS1
25Gigabit Ethernet TimeSync PCI Express Gen4 Server Adapter
TymeSync:
- Supports PTP Transparent Clock (TC) Boundary Clock (BC) OC (Master / Slave)
- PTP over IPv4 (IEEE-1588v2) / SyncE
- One step clock mode operation for PTP Master
- 10Mhz and 1PPS output for measurement purpose
- Full HW and SW TimeSync solution based on industry leading DPLL, Servo stack and PTP1588
- Incorporated accurate OCXO +/-10ppb to keep Long-term Holdover over 4h without physical layer assist < 25us
- Option for larger OCXO, +/-5ppb to keep Holdover over 4h < 3.5us
- Based on Three DPLL channels
- Packet and physical-layer frequency, phase and time synchronization
- Physical-layer compliance ITU-T G.8262, G.8262., G.813, G.812, Telcordia GR-1244. GR-253
- Packet-timing compliance with ITU-T G.8261, G.8263, G.8273.2, G.8273.2 (class A, B &C), G.8273.4
- Enable 5G/Class C wireless application with sub 10nS time/ phase alignment requirements
LAN and Virtualization Features:
- Unified Networking Providing a single wire for LAN and storage: NAS (SMB, NFS) and SAN (iSCSI, FCoE)
- Remote SAN boot with data path intelligent offload
- VEB (Virtual Ethernet Bridge) & Edge Virtual Bridging / 802.1Qbg
- VMDq for VMware Netqueue* and Microsoft DVMQ*
- SR-IOV (Single Root I/O Virtualization): up to 256 Virtual Functions
- iSCSI and PXE boot (legacy and UEFI)
- Support for standard and custom network headers
- 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
- Data Center Bridging (DCB) up to 8 traffic classes
SFP28 25Gigabit Ethernet:
- 25Gigabit Ethernet Adapter with SFP cage supports :
- -ZS: Fiber 25 Gigabit Ethernet 25GBASE-SR:
- 25GBase-SR with 25G 850nM Small Form Factor Pluggable (SFP28)
- -ZL: Fiber 25 Gigabit Ethernet 25GBASE-LR:
- 25GBase-LR with 25G 1310nM Small Form Factor Pluggable (SFP28)
- -SR: Fiber 10 Gigabit Ethernet 10GBASE-SR:
- 10GBASE-SR with 10Gigabit 850nM Small form Factor Pluggable (SFP+)
- -LR: Fiber 10 Gigabit Ethernet 10GBASE-LR:
- 10GBASE-LR with 10Gigabit 1310nM Small form Factor Pluggable (SFP+)
-ZS: Fiber 25 Gigabit Ethernet 25GBASE-SR:
- 25 Gigabit Fiber Ethernet port supports 25GBASE-SR (850nM LAN PHY)
- 25Gigabit 850nM Small form Factor Pluggable (SFP28)
-ZL: Fiber 25 Gigabit Ethernet 25GBASE-LR:
- 25 Gigabit Fiber Ethernet port supports 25GBASE-LR (1310nM LAN PHY)
- 25Gigabit 1310nM Small form Factor Pluggable (SFP28)
-SR: Fiber 10 Gigabit Ethernet 10GBASE-SR:
- 10 Gigabit Fiber Ethernet port supports 10GBASE-SR (850nM LAN PHY)
- 10Gigabit 850nM Small form Factor Pluggable (SFP+)
-LR: Fiber 10 Gigabit Ethernet 10GBASE-LR:
- 10 Gigabit Fiber Ethernet port supports 10GBASE-LR (1310nM LAN PHY)
- 10Gigabit 1310nM Small form Factor Pluggable (SFP+)
LAN and Virtualization Features:
- SR-IOV (Single Root I/O Virtualization): up to 256 Virtual Functions
- Support for standard and custom network headers
- 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
Host Interface:
- PCIe x16 lanes from/to host via gold fingers of edge card
- Support PCI Express Base Specification Revision 4.0, 16GT/s, 8GT/s, 5GT/s or 2.5GT/s
PE425G4TSi81L TimeSync Card STS1
25Gigabit Ethernet TimeSync PCI Express Gen4 Server Adapter
General Technical Specifications: PE425G4TSi81L-XR | |
Interface Standard: | PCI-Express Base Specification Revision 4.0 (16 GTs) |
Board Size: | Low profile short add-in card: 167.64mm X 64.39mm (6.6”X 2.535”) |
PCI Express Card Type: | x16 Lane |
On Board Connector Voltage: | +12V +/-8% +3.3 =/- 8% |
PCI Connector: | Gold Finger: x16 Lane |
Controllers: | Intel E810-CAM1 |
DPLL: | 1588 / SyncE |
Holdover: | Long-term Transient Response (Holdover) performance, without physical layer assist, in 50 +/-10°C TA: For TBD, expected 3.5us TE over 4 hours For TBD, expected 25us TE over 4 hours |
Holder: | Metal Bracket |
Power Consumption: | Estimated maximum power consumption :40.05W- 46.1W |
Operating Temperature: | 0°C – 45°C (32°F – 113°F) |
Air Flow Requirements: | 200 ft./min |
Storage: | -40°C–65°C (-40°F–149°F) |
Regulation: | Card shall meet CE, FCC Class B, ROHS requirements. |
MTBF*: | Operating conditions: Environment: GB, Temperature: 40.00 °C Assembly Ref.Des.: PE425G4TSI81L, ID: 1, Description: Quad Port Fiber 25Gb TimeSync PCI-E Server Adapt. |
LEDs | |
LEDs: | Each Port has 2 LEDs to indicate link status and speed.
Link /ACT: Logic Link/Activity, Green
|
LEDs location: | LEDs are located on the PCB, visible via holes in the metal bracket. |
Connector: | Quad Port SFP28 / zSFP+ Cage |
SFP28 25Gigabit Ethernet Technical Specifications Adapters: | |
SFP28 (Small Form Factor Pluggable) supports: | SFI interfaces supports 25GBase-R PCS and 25 Gigabit PMA in order to connect with SFP28 to 25GBase-SR |
25GBase-SR SFP28: IEEE Standard / Network topology: | Fiber 25Gigabit Ethernet, 25GBASE-SR (850nM LAN PHY). |
25GBase-SR SFP28: Data Transfer Rate: | 25.78125Gbps |
25GBase-LR SFP28: IEEE Standard / Network topology: | Fiber 25Gigabit Ethernet, 25GBASE-LR (1310nM LAN PHY) |
25GBase-LR SFP28: Data Transfer Rate: | 25.78125Gbps |
25GBase-LR SFP28: Cables and Operating distance Up to: | Single-Mode: 10000m at 9um |
-ZS: Fiber 25GBASE-SR Technical Specifications: | |
Output Transmit Power (25G): | Minimum: -1.42 dBm |
Optical Receive Sensitivity (25G): | Maximum: -5.98 dBm |
Operating Systems: | |
Operating system support: | Linux |
PE425G4TSi81L TimeSync Card STS1
25Gigabit Ethernet TimeSync PCI Express Gen4 Server Adapter
P/N | Description | Notes |
PE425G4TSi81L-XR | Quad Port SFP28 25 Gigabit Ethernet PCI Express Server Adapter | x16 Gen4, Low Profile, Based on Intel E810-CAM1, Support Direct Attached Copper cable, Support Silicom SFP28 approved transceiver. |
PE425G4TSi81L-ZS | Quad Port Fiber (SR) 25 Gigabit Ethernet PCI Express Server Adapter | x16 Gen4, Based on Intel E810-CAM1, Low-profile, on board support for Fiber SR |
PE425G4TSi81L-ZL | Quad Port Fiber (LR) 25 Gigabit Ethernet PCI Express Server Adapter | x16 Gen4, Based on Intel E810-CAM1, Low-profile, on board support for Fiber LR |
PE425G4TSi81L-SR | Quad Port Fiber (SR) 10 Gigabit Ethernet PCI Express Server Adapter | x16 Gen4, Based on Intel E810-CAM1, Low-profile, on board support for Fiber SR |
PE425G4TSi81L-LR | Quad Port Fiber (LR) 10 Gigabit Ethernet PCI Express Server Adapter | x16 Gen4, Based on Intel E810-CAM1, Low-profile, on board support for Fiber LR |