STS4 TimeSync NIC P425G410G8TS81

12 Ports 25/10 Gigabit Ethernet Grand Master, Boundary Clock, Slave Clock, PCIe GEN4 TimeSync NIC

Revolutionizing STS4 for Accurate and Robust Timing NIC

The Silicom TimeSync product line (STS) offers cutting edge combination of PCIe smart NIC with highly accurate and robust timing support. STS supports IEEE 1588 (PTP) standard compliance Grand Master (GM), Boundary Clock (BC), Slave and G.8275.1, G.8275.2 Telecom profiles.

STS incorporating best in class Microchip PTP stack and servo in its product. By building Silicom timing software package on top of it, adding advanced GNSS, SyncE and PTP support, Silicom delivers carrier grade timing product.

The STS4 TimeSync product delivers high sync performance, such as BC/Slave ITU-T G.8273.2 Class C, and Master ITU-T G.8272 Class B, complete support of failover scenarios, tight monitoring of GNSS clock quality and jamming, and extremely good holdover performance with and without SyncE. Silicom STS4 TimeSync are fully supported by RedHat OpenShift operator, VMware Photon as well as by Helm Chart / K8s.

The STS4 TimeSync address a wide range of use cases including 4G and 5G O-RAN (Open RAN), generic cellular backhaul and fronthaul, data centers, HFT (High Frequency Trading) and industrial automation. O-RAN (Open RAN) relies on stringent time synchronization requirements for end-to-end latency and jitter.

O-RAN ensure open, intelligent, virtualized and fully interoperable RAN. O-RAN delivers the most eﬃciently infrastructure connectivity solution for high-speed and synchronized network connections. Stringent timing synchronization is critical for ensuring O-RAN requirements for end-to-end latency and spectral efficiency.

STS4 TimeSync incorporate virtual RAN software for DU & CU that runs on COTS (Commercial of the Shelf) servers with high-density NIC (network interface card), combined with advanced time synchronization including PTP, SyncE (Synchronous Ethernet) and GNSS (Global Navigation Satellite System). The usage of COTS hardware and integration of Grand Masters (GM) and Boundary Clock (BC) functionalities into DU NIC drive the cost down.

The STS4 TimeSync NIC includes high port count, high-speed links, timestamps on PHY level, SyncE & PTP PLL, on-board GNSS, while the PTP stack and servo software run on COTS servers in virtual environment.

STS4 TimeSync NIC P425G410G8TS81

12 Ports 25/10 Gigabit Ethernet Grand Master, Boundary Clock, Slave Clock, PCIe GEN4 TimeSync NIC

12 Ethernet ports – 8 ports 10G and 4 ports 25G
Supports IEEE1588v2/PTP over Ethernet/IPv4/IPv6
Supports IEEE 1588 (PTP) standard compliance Grand master (GM), Boundary Clock (BC), Slave
Supports ITU-T G.8275.1, G.8275.2 Telecom profiles
Supports
- T-GM (Telecom Grand Master)
- T-BC (Telecom Boundary Clock)
- T-TSC (Telecom Slave Clock)
Incorporates best in class PTP stack and servo in its product
Carrier grade timing product
Extremely good holdover performance – Incorporate high end OCXO
Master ITU-T G.8272 Class B
BC/Slave ITU-T G.8273.2 Class C
BC/Slave ITU-T G.8273.4 Class B
One step and two steps clock modes
GNSS (Global Navigation Satellite System) receiver as a standard
Synchronous Ethernet
- ITU-T G.8261 – Packet over Transport aspects – Synchronization, quality and availability targets
- ITU-T G.8262 – Timing characteristics of synchronous equipment slave clock
- ITU-T G.8262.1 – Packet over Transport aspects – Synchronization, quality and availability targets
- ITU-T G.8264 – Distribution of timing information through packet networks (ESMC)
Supported OS / Environments
- Kubernetes
- Redhat OpenShift
- Vmware Photon
- Rocky
- Ubuntu
- CentOS

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

STS4 TimeSync NIC P425G410G8TS81

12 Ports 25/10 Gigabit Ethernet Grand Master, Boundary Clock, Slave Clock, PCIe GEN4 TimeSync NIC

STS Information
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: 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
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
STS4 12 Ports: P425G410G8TS81-XR: General Technical Specifications
Interface Standard:	PCI-Express Base Specification Revision 4.0 (16 GTs)
Board Size:	Dual slot Standard height add-in card, FHHL: 167.64mm X 111,15 mm (6.6”X 4.376”)
PCI Express Card Type:	Electrical 2×8 G4 Bifurcation, Mechanical x16
USB Connector:	PCB4: 4×1 header PCB2: 4×1 header
Voltage:	PCIe +12V +/-8%
Wight:	Without transceivers : 440 gr With transceivers : 594 gr
PCI Connector:	Gold Finger: x16 Lane
Controllers:	Intel E810-CAM2 Intel E810-CAM1
Network ports:	QSFP28, QSFP+, 4xSFP+
Holder:	Metal Bracket
Power Consumption -XR	For P425G410G8TS81-XR: 39.96W, 3.28A at 12V: Typical No SFP+/QSFP Max: calculated: 60W
Power Consumption -ZS	For P425G410G8TS81-ZS: 47.28W, 3.94A at 12V: Typical full traffic and link on 12 ports Max: calculated: 60W
Operating Temperature:	0°C – 45°C (32°F – 113°F)
Air Flow requirements	For 45°C recommended: 400 LFM for Hot aisle 300 LFM for Cold Aisle See thermal specification for more details
Storage:	-40°C–65°C (-40°F–149°F)
Regulation:	CE, FCC Class A, ROHS requirements
LEDs:	PCB4: Ports 0-3: 4x Green LEDs, one per port: Turns on for Link, Blinks for Activity. Ports 4-7: 4x Green LEDs, one per port: Turns on for Link, Blinks for Activity. Ports 8-11: Option A: 4x Green LEDs, one per port: Turns on for Link, Blinks for Activity. Option B: One Green LED for all 4 ports. Turns on for Link, Blinks for Activity. PCB2: Ports 0-3: 4 x 10 Gbps Green LEDs per port: Turn on Link. Ports 4-7: 4 x 10 Gbps Green LEDs per port: Turn off on Link. Ports 8-11: Turn off at Product Rev 2.40 (will be corrected on future revision)
LEDs location:	Ports 0-3: On Metal Bracket, above 4 SFP+s Ports 4-7: On Metal Bracket, right side of QSFP+ Ports 8-11: On Metal Bracket, right side of QSFP28
QSFP28 25Gigabit Ethernet Technical Specifications Adapters:
QSFP28 (Small Form Factor Pluggable) supports:	(x4) SFI interfaces supports 25GBase-R PCS and 25 Gigabit PMA in order to connect with QSFP to 25GBase-SR (MPO)
25GBase-SR QSFP: IEEE Standard / Network topology:	Fiber 25Gigabit Ethernet, 25GBASE-SR (850nm LAN PHY). 25.78125GBd MMF Multi-Mode fiber
QSFP+/ SFP+ 10Gigabit Ethernet Technical Specifications Adapters:
QSFP /SFP+ (Small Form Factor Pluggable) supports:	SFI interfaces supports 10GBase-R PCS and 10 Gigabit PMA in order to connect with QSFP to 10GBase-SR (MPO)
10GBase-SR: IEEE Standard / Network topology:	Fiber 10Gigabit Ethernet, 10GBASE-SR (850nm LAN PHY). 10.3125GBd MMF Multi-Mode fiber

STS4 TimeSync NIC P425G410G8TS81

12 Ports 25/10 Gigabit Ethernet Grand Master, Boundary Clock, Slave Clock, PCIe GEN4 TimeSync NIC

P/N	Description	Notes
P425G410G8TS81-XR	12 Port 25/10 Gigabit Ethernet TimeSync PCI Express NIC Card	STS4, x16 Gen4, bifurcation 2×8 G4, FHHL, dual slot
P425G410G8TS81-ZS	12 Port 25/10 Gigabit Ethernet TimeSync PCI Express NIC Card	STS4, x16 Gen4bifurcation 2×8 G4, FHHL, dual slot ,SR transceivers