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Altera_Forum's avatar
Altera_Forum
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11 years ago

SDRAM signals managing

Hi, I'm using qsys to implement a system on Quartus II. I use a DE0-NANO board and I want to access the SDRAM. I want to access it from a Nios II (and also from the hardware design but it's anot...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

OK, I'm reading the other post carefully, it's exactly what I need so I'll use it (it works well for my board) and I'll tell you when I've got questions.

For now I'm wondering about the addressing: you configured a 32MB memory but the address is 13-bit wide with a bank selection of 2 bits. So we've got 2^15=32768 locations for 2B words. So, for me, it should be only 65536 bytes. Tell me what is my error. 32M is 2^9*65536 so I think it's about the number of columns but I don't understand what the row/column numbers are. Tell me.