Network Search Engine
256K x 72 Entries
To request the full IDT75K72100 datasheet, please contact your local
IDT Sales Representative or call 1-831-754-4555
IDT provides proven, industry-leading network search engines
(NSEs) and a comprehensive suite of software that enable and accelerate
the intelligent processing of network services in communications equip-
ment. As a part of the complete IDT classification subsystem that includes
content inspection engines, the IDT family of NSEs delivers high-
www.DataSheept4eUrf.ocrommance, feature-rich, easy-to-use, integrated search accelerators.
Operating at up to 250 million searches per second, the IDT
75K72100 NSE offers designers the ability to simultaneously search in
separate, mutually exclusive databases, increasing the search rate to
support multiple full-speed OC-192 packet searches per instruction with
a single device. Targeting core, metro and edge routers, this device
enables higher-performance systems to achieve increased packet pro-
cessing rates and facilitates additional services, through simultaneous
database lookup (SMDL) and sophisticated next free address (NFA)
synchronous full-ternary 256K x 72 entry device and provides array
segments which can be configured to enable multiple width lookups from
36to576bitswide. This NSE deviceprovidestheuserwithflexibilityand
control in determining the device power. Only the array segments that
will be used for a specific NSE operation are powered up while the unused
segments are not. The IDT 75K72100 NSE requires a 1.2-volt VDD
supply and a 2.5V VDDQ supply.
The IDT 75K72100 NSE utilizes the latest high-performance 1.2V
CMOS processing technology and is packaged in a JEDEC Standard,
472 BGA footprint is backwards compatible with the IDT 128K x 72 Entry
(75K62100), 64K x 72 Entry (75P52100) and 32K x 72 Entry (75P42100)
Ram Control Circuits
Global Mask Registers
6074 drw 01
The IDT NSEs are designed to fulfill the needs of various types of Figure 1.0 ASIC / Compatible NSE/ SRAM configuration
networking systems. In solutions requiring data searching such as
routers, a system configuration as shown in Figure 1.0 may be realized.
Maximum flexibility is provided by allowing one board design to be
NSEs and later upgraded to use IDT’s 75K72100 NSE.
In this compatible configuration, the NSE interfaces directly to an
ASIC/ FPGA for lookups and routes an Index to an associated SRAM
Network Search Engine
device, which supplies the next hop address via an SRAM Data Bus to
the ASIC. The NSE provides the required control signals to directly
can also be fed directly back to the ASIC/ FPGA without the use of external
SRAM. Control of the associated handshake signals is provided by all
NSEs to adapt to either configuration.
© 2003 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.