Description

The R8A20421ABG is an electronic component manufactured by Renesas. It is an advanced ternary CAM search engine designed for network packet classifying. The device features a full-custom CAM memory that enables it to deliver large capacity, high density, and low power consumption.

Specifications and features

• 9 M/18 M-bit full ternary CAM
• CLK operating frequency 266 MHz Max
• Maximum search rate at normal mode: 133 Msps [72-bit/144-bit lookup size]
• Maximum search rate at parallel mode: 266 Msps [72-bit/144-bit lookup size]
• Maximum search rate at normal mode: 66.5 Msps [288-bit lookup size]
• Maximum search rate at parallel mode: 133 Msps [288-bit lookup size]
• Maximum search rate at parallel mode: 33 Msps [576-bit lookup size]
• Priority encoder
• Hierarchical search
• Parity bit (even parity) check
• IEEE 1149.1 test port
• 1.2 V core power supply
• 1.2 V power supply for search (1.0 V power supply for power saving)
• SSTL-2 interface/2.5 V I/O power supply

Application Scenarios

The R8A20421ABG is ideal for use in a range of applications that require network packet classification. This includes 5G networks, network routers, and switches.

Comparison

• Large capacity and high density
• Low power consumption
• Parity bit check for error detection

• May not be suitable for small-scale projects due to its high capacity and density
• Requires a stable and reliable power supply to function optimally