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M88DR4DB02P/M88NR4DB02P - Gen2 Plus DDR4 Data Buffer (DB)

M88DR4DB02P/M88NR4DB02P is a dual 4-bit bidirectional Data Buffer (DB) with differential strobes. The chip is fully compliant with JEDEC DDR4DB02 specification and can support speed up to DDR4-3200. Nine DBs can be used in conjunction with one DDR4 Registering Clock Driver (RCD) on an LRDIMM to provide advanced memory solutions with higher capacity, higher speed and lower power for next generation server platforms. In addition, M88NR4DB02P has a NVDIMM (Non-Volatile Dual In-line Memory Module) support feature, which provides a new level of functionality to the computer memory hierarchy and allows the next-generation data center servers to take full advantage of persistent memory at DRAM speeds.


Fully compliant with JEDEC DDR4DB02 standard

Speed up to DDR4-3200

Optional NVDIMM support features (only for M88NR4DB02P)

Bidirectional retiming and 1:1 redriving of DDR4 data (DQ) signals

Regeneration of data strobe (DQS) signals from input clock

FIFOs on the DQ path for decoupling Host and DRAM interface time domains

Up to four package ranks supported

Package rank timing alignment supported on the Host interface

Only x4 DRAM devices supported

VDD voltage support: 1.2V

Parity error checking and sequence error checking on the BCOM interface

Different power saving modes such as CKE low power mode, CK stop mode, etc

Green package: 53-ball Flip-Chip Fine-Pitch BGA for M88DR4DB02P; 56-ball Flip-Chip Fine-Pitch BGA for M88NR4DB02P



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