PNX1300 Philips, PNX1300 Datasheet - Page 197

• Manufacturer Part Number: PNX1300
• Description: Media Processors
• Manufacturer: Philips

Philips Semiconductors
128-Mbit SDRAMs organized in x32 can be used to build
16-, 32-, 48- or 64-MB memory systems. A 32-MB sys-
tem is pictured in
Figure 12-11. Schematic of a 32-MB memory system consisting of two ranks of 4 1M 32 SDRAM chips.
Figure
12-11. A 16-MB system can be
MM_CLK[0]
MM_CS#[1]
MM_CLK[1]
MM_CS#[0]
CLK
Address[11:0]
Control
CS#
CLK
Control
CS#
Address[11:0]
BA[1:0]
BA[1:0]
PNX1300
4 1M 32
SDRAM
4 1M 32
SDRAM
DQM[3:0]
DQM[3:0]
DQ[31:0]
DQ[31:0]
obtained by removing the device controlled
MM_CS#[1]. Similarly it can be extended to 48- or 64-MB
by adding devices controlled by MM_CS#[3:2].
PRELIMINARY SPECIFICATION
MM_DQM[3:0]
MM_DQM[3:0]
MM_DQ[31:0]
MM_DQ[31:0]
SDRAM Memory System
12-15
by