Visible to Intel only — GUID: iga1401314932095
Ixiasoft
Visible to Intel only — GUID: iga1401314932095
Ixiasoft
33.5. Example Configurations
The following examples show how to connect the SDRAM controller outputs to an SDRAM chip or chips. The bus labeled ctl is an aggregate of the remaining signals, such as cas_n, ras_n, cke and we_n.
The address, data, and control signals are wired directly from the controller to the chip. The result is a 128-Mbit (16-Mbyte) memory space.
The address and control signals connect in parallel to both chips. The chips share the chipselect (cs_n) signal. Each chip provides half of the 32-bit data bus. The result is a logical 128-Mbit (16-Mbyte) 32-bit data memory.
The address, data, and control signals connect in parallel to the two chips. The chipselect bus (cs_n[1:0]) determines which chip is selected. The result is a logical 256-Mbit 32-bit wide memory.