Intel® E8870DH DDR Memory Hub Datasheet
The DDR Memory Hub (DMH) is a memory translator hub that provides a mechanism for tunneling DDR SDRAM transactions between a Main Channel (RAMBUS* interface) and two Branch Channels (DDR SDRAM interfaces). While all RAMBUS signals maintain electrical compatibility with RDRAM pins, the RAMBUS signals are logically redefined to packetize DDR SDRAM I/O traffic. The DMH tunnels SDRAM packets between the Main Channel and a Branch Channel with deterministic timing.
Read the full Intel® E8870DH DDR Memory Hub Datasheet.