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Altera_Forum
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17 years ago

DDR2: chip bits definition in local_addr[]

Can someone tell me what the definition of "chip bits" is for the local_addr field for the DDR2 SDRAM controller? The DDR and DDR2 SDRAM High-Performance Controller User Guide says for multipl...
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Altera_Forum
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17 years ago

chip bits means the number of bits needed to drve the chip selects. A controller for a two rank memory module e. g. has one mem_local_cs_addr or chip bit, a four rank (four individual CS) has two.