OVERVIEW
Leader in Server Memory Interface Chipsets
DDR4 PRODUCTS:
Register
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Used in both RDIMM and LRDIMM
Paired with 4DB0232 for LRDIMM
32-bit 1:2 command/address register
1.2V Vdd operation
Supports up to 4 packages ranks and 8 logical
ranks with native 3DS support
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Advanced I/O enable control
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Support at-speed BCOM bus for data buffer
control
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Automatic impedance calibration
New DDR4 power saving protocols
Command/ Address Parity Checking
Control register RCW readback
1MHz I
2
C bus
DATA BUFFER
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Paired with 4RCD023 for LRDIMM
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Dual 4-bit bidirectional data registers with
differential data strobes
With the industry’s largest product portfolio, IDT is the only company
that can provide complete DDR4 and DDR3 chipset solutions for
Enterprise Server memory modules.
IDT’s DDR4 Registered Clock Driver, Data Buffer and Temp Sensor make up
the industry’s first complete chipset for DDR4 registered dual in-line memory
modules (RDIMMs) and load reduced dual inline memory modules (LRDIMMs).
With DDR4 data rates climbing to 3.2Gb/s and higher, the clear advantages
afforded by RDIMM and LRDIMM as a speed-scalable memory technology are
expected to drive adoption across a broad array of memory-intensive computing
and storage applications.
Through flexible I/O control, timing and voltage calibration, and control register
programmability, the IDT DDR4 Registered Clock Driver (4RCD023) and Data
Buffer (4DB0232) enable faster data rates at higher densities on all JEDEC
®
defined DDR4 LRDIMM and RDIMM topologies. DIMM topology configuration
and DRAM information is stored in IDT’s Temperature Sensor EEPROM (TSE2004).
With a deep knowledge of memory interface chipsets based on successful
chipset introductions for all DDR generations, IDT’s devices will provide reliable
performance for your application.
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1.2V Vdd operation
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Automatic impedance calibration
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BCOM Parity Checking
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Control register BCW readback
Temp Sensor + EEPROM
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Used in UDIMM, RDIMM, LRDIMM
Temperature accuracy up to ±0.5°C
512 byte EEPROM for vendor info
1MHz I
2
C bus
BENEFITS
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All devices are JEDEC
®
compliant and meet
stringent requirements for reliability and
application compliance
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Up to 35% DDR4 power savings compared
to DDR3
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Enables Terabyte DIMM memories
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Parity and CRC for improved data error recovery
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Improved debug and system margining
Applications
Applications requiring deeper memory at higher data rates and lowest power
including enterprise servers, data centers, workstations, storage devices, and
communications.
OV MEMORY INTERFACE REVC 0419
For more information visit:
idt.com/DDR4
idt.com/DDR3
idt.com/TempSensor
IDT and the IDT Logo and are registered trademarks or trademarks of Integrated Device Technology, Inc., in the United States and
other countries. All other trademarks are the property of their respective owners. © 2015-2019. Integrated Device Technology, Inc.
All Rights Reserved.
MEMORY INTERFACE OVERVIEW
Embedded System
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