ADLINK Technology cPCI-3915A, Руководство пользователя

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12 Functional Description
3.3 Memory
The cPCI-3915 supports a single-channel, unbuffered, non-ECC
DDR2 SDRAM operating at 533/400 MHz. The GMCH supports a
128 MB, 256 MB, 512 MB, or 1 GB memory module in SODIMM
package. The memory interface supports the following:
X 256 MB, 512 MB,and 1 GB technology supported using x8
or x16 devices
X High-density memory package for DDR2 type devices
X 128 MB minimum memory, 1 GB maximum memory
X
Configurations defined in the JEDEC DDR2 SODIMM spec-
ification only
X
DDR2 533/400 MHz memory devices
X
On-Die Termination (ODT) for DDR2
X
Single-channel configuration with one, two, three, or four
ranks
X Double-sided unbuffered SODIMMs (4 rows populated)
3.4 Intel® 915GM Graphics Memory Control Hub
The Intel® 915GM GMCH in a 1257-pin Micro-FCBGA package
provides the display interface for a variety of display devices,
including:
X Analog CRT DAC
X Digital LVDS
X
Serial Digital Video Output (SDVO)
3.5 Direct Media Interface (DMI)
Direct Media Interface (DMI) is the chip-to-chip connection
between the Graphics Memory Controller Hub (GMCH) and the I/
O Controller Hub. This high-speed interface integrates advanced
priority-based servicing allowing concurrent traffic and true isoch-
ronous transfer capabilities. Base functionality is completely soft-
ware-transparent, permitting current and legacy software to
operate normally.