How does the Quartus® II software allocate the different TriMatrix™ memory block sizes for a given Stratix™ design?</P>

Description

You can allocate TriMatrix memory blocks two ways. The Quartus II software checks each functional memory instantiation in the design. If it is using the ALTSYNCRAM function, the "RAM_BLOCK_TYPE" parameter will be checked.

1. If the parameter is set to "AUTO," the default setting, the Quartus II software will automatically select what type of TriMatrix memory block to use.
2. If the parameter is set to "M512", "M4K", or "M-RAM", the Quartus II software will implement the function using the stated resource.

For more information on this, please reference the Using TriMatrix Embedded Memory Blocks in Stratix & Stratix GX Devices chapter of the Stratix Device Handbook.