Datasheet > 4DB0232KD

4DB0232KD

更新时间： 2024-10-03 14:58:15

品牌	Logo	应用领域
瑞萨 - RENESAS		双倍数据速率
页数	文件大小	规格书
2页	774K
描述
Data Buffer for DDR4 Memory Modules

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数据手册

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4DB0232KD 数据手册

DDR4 Data Buffer 3200 Power

Efficiency Model

4DB0232KD1

Short-Form Datasheet

The 4DB0232KD1 also has a control bus interface that is used to

synchronously receive control commands from Renesas’ DDR4

interface is commonly referred to as the BCOM bus. It consists of

a 4-bit control bus BCOM[3:0], two dedicated control signals

BCKE and BODT, a voltage reference input, and a differential

clock input BCK_t/BCK_n.

Description

The 4DB0232KD1 is a JEDEC compliant DDR4 Data Buffer with

dual 4-bit bidirectional “DQ” data registers and “DQS” differential

strobes. It is designed for 1.2 VDD operation in DDR4 LRDIMM

applications. The DQ host interface side of each 4-bit bidirectional

data register is connected to a memory controller while the MDQ

interface side is connected to two x4 DRAMs.

The 4DB0232KD1 supports dedicated pins for ZQ calibration and

for parity error alerts.

All DQ and MDQ inputs are pseudo-differential with an internal

voltage reference. All DQ and MDQ output drivers use external

VDD termination and are optimized to drive single or dual

terminated traces in DDR4 LRDIMM and NVDIMM-P applications.

The differential DQS and MDQS strobes are used to

synchronously sample the DQ and MDQ 4-bit data at the receiving

end and are regenerated and driven by the DDR4 Data Buffer

alongside the DQ and MDQ outputs on the opposite side of the

device.

Features

▪ All DDR4 data rates from 1600MT/s to 3200MT/s

▪ DDR4DB02 JEDEC Specification r1.0 compliant

▪ Supports all JEDEC LRDIMM raw card types

▪ Lower power dissipation reduces dependency on heat sinks in

standard server configurations

▪ 3.0  7.5 mm body, 0.5 0.5 mm ball pitch, 14  5 grid,

53-CVBGA, optimized for DDR4 LRDIMM PCB layout

▪ Guaranteed operation at commercial grade temperatures

Block Diagram

TS/SPD

RCD

24 Bits

Command Address

SPD

40 Bits Data

32 Bits Data

April 30, 2020

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