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3307800
Page 11
2.3.2 DDR2 Memory Controller
All processors supported by the 3307800 CPU card have their own DDR2 memory
controller. The DDR2 controller has the following features:
„ Low-latency, high-bandwidth
„ 667MHz 128-bit DDR2 SDRAM controller
„ Supports up to two un-buffered DDR2 SO-DIMM
„ Each SO-DIMM has a maximum capacity of 2GB
The DDR2 controller on the processor is interfaced to two SO-DIMM sockets on the
3307800.
Figure 2-4: SO-DIMM Sockets
2.3.3 Processor Electrical Interfaces
The supported processors have the following electrical interfaces:
„ HyperTransport™ technology: LVDS-like differential, unidirectional
„ DDR2 SDRAM: SSTL_1.8 per JEDEC specification
„ Clock, reset, and test signals also use DDR2
„ SDRAM-like electrical specifications.