Introduction
SMBus access to the AMB may be a requirement to boot a system. This provides a
mechanism to set link strength, frequency and other parameters needed to insure
robust operation given platform specific configurations. It is also required for diagnostic
support when the link is down.
The SMBus address straps located on the DIMM connector are used by the AMB to get
its unique ID.
More information is available in the SMBus chapter of this document.
Additionally, more detailed information about the SMBus, refer to the System
Management Bus (SMBus) Specification [HTTP://smbus.org/].
1.4
References
This product and datasheet are consistent with the following documents:
• FB DIMM Architecture and Protocol Specification, [1]
• FBD Design for Test, Design for Validation (DFx) Specification, [2]
• FB4300/5300/6400 DDR2 Fully Buffered DIMM Design Specification, [3]
• JEDEC DDR2 SDRAM Specification, JC 42.3 [4]
• High Speed Differential Point-to-Point Link at 1.5 V for Fully Buffered DIMM, [5]
• SMBus Specification (http://smbus.org/specs/smbus20.pdf) [6]
• Advanced Configuration and Power Interface Specification Version 2.0c
(www.acpi.info) [7]
• Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface
Mount Devices, IPC/JEDEC J-STD-020C
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Intel® 6400/6402 Advanced Memory Buffer Datasheet
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