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Altera_Forum's avatar
Altera_Forum
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17 years ago

newbie general questions

The megafunctions LPM in Quartus... do they refer to existing blocks (hardware) on the fpga with ready written verilog codes to call them? or are they fully codes? *More questions coming if it'...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Some megafunctions are implemented entirely in soft logic. Some like altpll (an Altera-specific megafunction, not an LPM megafunction) are just dedicated silicon. Some like altsyncram and lpm_mult can use RAM blocks and DSP blocks or logic resources. Some like altlvds_rx/altlvds_tx and alt2gxb can or must use dedicated silicon for SERDES or high-speed transceiver blocks but even then might include some logic resources.