Interface Specification Tab - Interface Specification Tab - 2.0 English - PG468

DRAM Semi-Ternary CAM 2.0 LogiCORE IP Product Guide (PG468)
Document_ID
PG468
Release_Date
2026-01-30
Version
2.0 English
Figure 1. Interface Specification Parameters Generated by Your Tool
Lookup Rate
This is the supported lookup rate of the CAM instance expressed in million lookups per second (Mlps). To save resources, it is important not to set the lookup rate higher than required.
Lookup Interface Frequency

This is the clock frequency for the Lookup Request and Response Interfaces specified in MHz.

Enable Flow Control
Enable flow control for the lookup interface output. Flow control adds extra FIFOs for SINGLE_CLOCK mode, so that the lookups can be stopped. Flow control is not needed if the m_axis_lkup_tready port is always high when the lookup response arrives.
Clocking Mode
The options available in this drop-down menu are SINGLE_CLOCK and DUAL_CLOCK. When SINGLE_CLOCK mode is selected, the configuration parameter RAM Frequency is not available.
RAM Frequency
This is the clock frequency for the memories (block RAM/Ultra RAM) and the internal data base, specified in MHz. Specifying a higher frequency RAM clock enables time division of the hardware resources, leading to significant resource savings. This configuration parameter is only available when CLOCKING_MODE = DUAL_CLOCK is selected.
Note: When you set CLOCKING_MODE = SINGLE CLOCK, the value of RAM_FREQ = LOOKUP_INTERFACE_FREQ.
Enable Indirect Addressing
Address bus is fixed at 13 bits. Addresses are written to an indirection register before performing the actual read or write. Direct addressing adjusts the address bus width to enable direct access to the Block RAM, Ultra RAM, and DRAM (requires fewer write operations).