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EP1SGX10C Datasheet, PDF (88/262 Pages) Altera Corporation – StratixGX FPGA Family | |||
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Stratix GX FPGA Family
The memory address depths and output widths can be configured as
4,096 Ã 1, 2,048 Ã 2, 1,024 Ã 4, 512 Ã 8 (or 512 Ã 9 bits), 256 Ã 16 (or
256 Ã 18 bits), and 128 Ã 32 (or 128 Ã 36 bits). The 128 Ã 32- or 36-bit
configuration is not available in the true dual-port mode. Mixed-width
configurations are also possible, allowing different read and write
widths. Tables 25 and 26 summarize the possible M4K RAM block
configurations.
Table 25. M4K RAM Block Configurations (Simple Dual-Port)
Read Port
4K Ã 1
2K Ã 2
1K Ã 4
512 Ã 8
256 Ã 16
128 Ã 32
512 Ã 9
256 Ã 18
128 Ã 36
Write Port
4K 1 2K à 2 1K ° 4 512 ° 8 256 ° 16 128 ° 32 512 ° 9 256 ° 18 128 ° 36
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
Table 26. M4K RAM Block Configurations (True Dual-Port)
Port A
4K Ã 1
2K Ã 2
1K Ã 4
512 Ã 8
256 Ã 16
512 Ã 9
256 Ã 18
4K Ã 1
v
v
v
v
v
2K Ã 2
v
v
v
v
v
1K Ã 4
v
v
v
v
v
Port B
512 Ã 8
v
v
v
v
v
256 Ã 16
v
v
v
v
v
512 Ã 9
v
v
256 Ã 18
v
v
When the M4K RAM block is configured as a shift register block, the
designer can create a shift register up to 4,608 bits (w à m à n).
88
Preliminary
Altera Corporation
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