This is a single-chip timing solution that delivers resilient performance for AI compute-nodes with high bandwidth and network synchronisation. Applications include smart network interface cards (Smart NICs), acceleration cards, switches and compute nodes in the $200 billion datacentre infrastructure market.
With the demand for AI workloads increasing rapidly there has been a significant increase in datacentre capacity, energy consumption and carbon emissions, so improving AI workload efficiency to reduce energy consumption and carbon emissions has become an industry-wide challenge.
A more efficient AI cluster delivers a lower total cost of ownership (TCO) and reduced energy consumption but in order to be more efficient they require high-bandwidth interconnects and tightly synchronised orchestration to minimise AI accelerator idle time.
Tighter synchronisation also provides precise network telemetry for AI operations and improves performance and reliability by identifying and mitigating underperforming hardware before it fails.
The SiT5977 replaces multiple timing components and optimises the efficiency of AI compute clusters with 3X tighter synchronisation for data transmission and communications in real-world environments.
In addition, its 4X smaller size, compared to competing architectures, enables larger processors in compact systems. This allows system architects to fully leverage high-speed 800G bandwidth network connectivity and maximise utilisation of the AI cluster.
“AI training and inference are fundamentally distributed computing applications, which require accurate timing to synchronise activities,” said Piyush Sevalia, executive vice president of marketing at SiTime. “By enabling a new, more efficient architecture, the Elite RF timing solution uniquely supports more efficient AI workload processing, which may lead to higher revenue and lower TCO for datacentres.”
The SiT5977 Super-TCXO is an ultra-stable, low-jitter TCXO with the industry’s highest frequency differential output. This chip further integrates digital control to provide additional system-level programmability.
Key features:
Environmentally robust with ±1 ppb/°C frequency slope (dF/dT) for optimum performance under airflow, thermal shock.
- Capable of driving 800G and higher links via 80 fs phase jitter and LVDS outputs.
- Enables embedded control loops with precise digital tuning of output frequency (DCTCXO), ±400 ppm pull range and 0.05 ppt (5e-14) resolution via I2C/SPI.
- Eliminates link flaps from quartz timing activity dips or micro jumps.
- Resistant to shock, vibration and board bending.
- Eliminates external LDOs via on-chip voltage regulators.
- 156.25 MHz output frequency enabling high-speed SerDes and 800G links.
The SiT5977 Super-TCXO is in production and samples are available now.
