Leader in Server Memory Interface Chipsets
DDR4 PRODUCTS:
Register
• Used in both RDIMM and LRDIMM
• Paired with 4DB0226 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
• Advanced I/O enable control
• Support at-speed BCOM bus for data
buffer control
• Automatic impedance calibration
• New DDR4 power saving protocols
• Command/ Address Parity Checking
• Control register RCW readback
• 1MHz I
2
C bus
Data Buffer
• Paired with 4RCD0124 for LRDIMM
• Dual 4-bit bidirectional data registers with
differential data strobes
• 1.2V Vdd operation
• Automatic impedance calibration
• BCOM Parity Checking
• Control register BCW readback
Temp Sensor + EEPROM
• Used in UDIMM, RDIMM, LRDIMM
• Temperature accuracy up to ±0.5°C
• 512 byte EEPROM for vendor info
• 1MHz I
2
C bus
BENEFITS
• All devices are JEDEC
®
compliant and meet
stringent requirements for reliability and
application compliance
• Up to 35% DDR4 power savings compared
to DDR3
• Enables Terabyte DIMM memories
• Parity and CRC for improved data error recovery
• Improved debug and system margining
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 (4RCD0124) and Data Buffer
(4DB0226) 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.
For more information visit:
www.idt.com/go/DDR4
www.idt.com/go/DDR3
www.idt.com/go/TempSensor
Applications
Applications requiring deeper memory at higher data rates and lowest power including
enterprise servers, data centers, workstations, storage devices, and communications.
IDT and the IDT Logo 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. Integrated Device Technology, Inc. All Rights Reserved.
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MEMORY INTERFACE OVERVIEW
