Overview
Description
The RG5D188 (MDB) is an MCR DIMM Data Buffer. Its primary function is to demultiplex and buffer data from the host CPU to DRAMs. It has two 4-bit data interfaces to the host, running at twice the speed of the DRAM interfaces. Each host interface multiplexes two pseudo-channels, both of which have a separate 4-bit DRAM interface. The RG5D188 supports x4 or x8 DRAMs. It also has an input-only control bus interface that is connected to an MRCD, as well as a dedicated pin for ZQ Calibration and loopback outputs for test purposes.
Features
- Pinout optimized MCR DIMM PCB layout
- MCR DIMM Server speeds up to 8800MT/s
- Supports power-down modes to conserve server power
- Supports 1 rank per pseudo-channel in x4 and up to 2-ranks per pseudo-channel in x8 MCR DIMM configurations
- Supports SDP and 3DS DRAM types
- Provides access to internal control words for configuring device features and adapting to different MCR DIMM and system applications
- Loopback and pass-through modes
- Training support features for DQ and MDQ interfaces
- ZQ calibration
Comparison
Applications
- MCR DIMM modules for Enterprise Servers
Documentation
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| Product Change Notice | PDF 306 KB | |
| Product Change Notice | PDF 64 KB | |
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Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| FCCSP | 78 | C | Yes | Tray | 3 | Get Samples, | |
| FCCSP | 78 | C | Yes | Reel | 3 | Get Samples, |
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