Features
The KE5BGCA256 provides best solution to the fast "Address Filtering" requirements of today’s internetworking switching equipment with the following outstanding functions.
• 256k-bit capacity of table
- 64-bit x 4096 entries
- CAM/RAM substitution
• Dual Port Architecture
- 32-bit I/O Port
- 16-bit Output Port
• 12 Search Conditions
-12 Mask registers selected by the external pins (MS<3:0>) and the CNTL1 register
- Access bit can be set for data aging
- Permanent bit can be set for permanent entry
- Automatic output of the contents of the Hit entry and the Empty entry address from the 16-bit Output Port
• Cascading
- Table size is expandable.
- A cascaded table acts as one integral search data table by internal device priority control.
• Commands
- Useful commands for table management such as aging and purging.
- Useful command for Source Address Learning
• Synchronous Operation
- 30ns cycle time
- 64-bit input/30ns
- Search, data read/write, and command operations are executed at high speed.
• 128-pin SQFP Package
• 3.3 v CMOS technology