tCAM-IP, Deterministic Packet Match and Filter

Ultra-low-latency ternary CAM for ACLs, filters, and classification with constant latency.

 

tCAM-IP performs ternary matches at very high speed with a fixed, short pipeline, making it ideal for packet filtering and classification in front of UDP or TCP offload engines. It supports wide keys, large rule tables, and simple table management for real-time updates.

 

 

 

Highlights

  • Constant search latency of 7 clock cycles
  • Up to 400 million searches per second at 400 MHz
  • Up to one million rule entries depending on configuration
  • Selectable key widths of 64, 56, 48, 40, 32, 24, or 16 bits
  • Simple table memory structure and user interface signals
  • Evaluation demos that combine tCAM with TOE and UDP cores

 

 

 

Why Macnica?

  • Rule-table sizing and memory mapping for your target PPS and burst profile
  • Coupling strategies with TOE/UDP and low latency EMAC for clean data paths
  • Demo flows that validate sustained match rates and update timing
  • Hardware and optics recommendations to keep measured latency consistent

 

Macnica workflow diagram

 

 

 

Key Specifications

  • Function: Ternary CAM match and action
  • Throughput: 400 MSPS searching at 400 MHz
  • Latency: 7 clock cycles from request to decision
  • Tables: Up to 1M rules, configurable key widths

 

Typical Applications

  • Packet filtering and ACLs in gateways and recorders
  • Flow classification before or after encryption
  • Deep packet inspection pre-selectors

 

 

 

Resources

 

 

 

 

Get Started

 

Tell us key width, rule count, and target PPS. We will map table memory, timing, and an integration plan with your chosen MAC and transport cores.

 

 

 

 

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