The RCD is a registering clock driver used on DDR5 and next-generation DDRx Register Dual-inline Memory Modules (RDIMMs) and Load-Reduced DIMMs (LRDIMMs). Its primary function is to
buffer the Command/Address (CA) bus, chip selects, and clock between the host controller and the DRAMs. It also
creates a BCOM bus which controls the data buffers for LRDIMMs.
The RCD memory buffer contains two separate channels (dual channel) which have some common logic such as clocking, but otherwise operate
independently of each other. Each channel has a 7-bit double data rate CA bus input, a single parity input, two chip
select inputs, and produces two copies of 14-bit single data rate CA bus outputs, and two copies of the chip select
outputs. The RCD has a common clock input and PLL, but produces separate clock outputs to the DRAM channels.
By using advanced analog/mixed-signal and digital SoC circuits, Deep-I can provide high-speed and energy-efficient RCD memory buffer to enable high-performance computing systems.