This example describes an 8-bit signed multiplier with registered I/O in Verilog HDL. Synthesis tools detect multiplier designs in HDL code and infer lpm_mult megafunction.

Figure 1. Signed Multiplier Top-Level Diagram

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Table 1 lists the ports and gives a description for each.

Table 1. Signed Multiplier Port Listing

Port NameTypeDescription


Input8-bit signed registered data inputs to multiplier unit. Input data is fed to the multiplier on each clock cycle.
out[15:0]Output16-bit signed output of multiplier unit

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