XC2V1000 Block RAM size

Oct 04, 2004 2 Replies
T

Hello,



according Xilinx Homepage

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my FPGA (XC2V1000) should have 720 kbit Block-RAM. But if I look into it, using the FPGA Editor a Blockram has two units each 2048*9 bits e.g. furthermore the whole FPGA has 4x10 RAM blocks. This results in



2048*9 * 2 * 4 * 10 = 1440 kbit, of course twice of Xilinx' specification. Since 4 columns and 10 rows are surely right, the presumption of 2 units per block has to be wrong.

Please point me out where I'm wrong!



Bye Tom.


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R

Each BRAM has two ports into the same memory array; The two 2kx9 ports address the same 18K bits, but permit simultaneous independent access.

Thomas Re> Hello,

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A

blockram has 2048*9 bits that look like to blocks because its dual ported ram, the amount of bits is 2048*9 what makes the math match again right?

antti

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