Clocking - 2.4 English

Ternary CAM Search LogiCORE IP Product Guide (PG318)

Document ID
PG318
Release Date
2022-11-08
Version
2.4 English
Table 1. Clocks
Clock Description
s_axi_aclk The AXI clock is used for table management. The AXI management interface has a completely asynchronous relationship with the lookup interface.
key_clk AXI4-Stream clock for Lookup Request/Response interfaces.
ram_clk The ram_clk is optional. It provides an option to clock the internal RAM and match logic on a separate high frequency clock. In most cases, this saves logic and memory resources.

Guideline:

  • key_clk <= 300 MHz, use ram_clk up to 600 MHz.
  • key_clk > 300 MHz, ram_clk is not used.