Freescale Semiconductor, Inc.
Fa c t S h e e t
CAMFACT/D
Rev. 1
M
OTOROLA
C
ONTENT
- A
DDRESSABLE
M
EMORIES
High-Speed Look-Up Engines for Networking Applications
The MCM69C232/233 and the MCM69C432/433 are flexible content-addressable memories (CAMs) that can
contain 4096 and 16,384 entries of 64 bits, respectively. They are implemented with standard 4-transistor
SRAM cells that provide a CAM solution at a fraction of the cost of existing CAMs. The widths of the match
field and the output field are programmable, and the match time is designed to be
鈮?/div>
180 nanoseconds for
MCM69C232/432. As a result, the MCM69C232/233 and the MCM69C432/433 are well suited for datacom
applications such as Virtual Path Identifier/ Virtual Circuit Identifier (VPI/VCI) translation in ATM switches up
to OC12 (622Mbps) data rates and Media Access Control (MAC) address lookup in Ethernet/Fast Ethernet
bridges. CAMs are also well suited for fully associative disk drive cache and RAID applications. The match
duty cycle of the MCM69C232/233 and the MCM69C432/433 is user defined, with a trade-off between the
time between matches and the number of new entries added to the CAM per second.
Freescale Semiconductor, Inc...
MCM69C232/233 Features
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MCM69C232 鈥?50 MHz
MCM69C233 鈥?66 MHz
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4096 Entries
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Programmable 12- to 64-Bit Wide Match Field
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MCM69C232 鈥?160 ns Match Time
MCM69C233 鈥?210 ns Match Time
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MCM69C232 鈥?200 ns Insertion Time
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MCM69C233 鈥?300 ns Insertion Time
(if 1 of 12 entry queue locations is empty)
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MCM69C232 鈥?12 ms Initialization Time
MCM69C233 鈥?18 ms Initialization Time,
after Fast Insertion (at Power-up only)
MCM69C432/433 Features
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MCM69C432 鈥?50 MHz
MCM69C433 鈥?66 MHz
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16,384 Entries
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Programmable 14- to 64-Bit Wide Match Field
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MCM69C432 鈥?180 ns Match Time
MCM69C433 鈥?240 ns Match Time
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MCM69C432 鈥?300 ns Insertion Time
MCM69C433 鈥?450 ns Insertion Time
(if 1 of 14 Entry Queue Locations is Empty)
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MCM69C432 鈥?80 ms Initialization Time
MCM69C433 鈥?120 ms Initialization Time,
after Fast Insertion (at Power-up only)
Common Features
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鈥?/div>
鈥?/div>
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Mask Register to "Don鈥檛 Care" Selected Bits
Depth Expansion by Cascading Multiple Devices
Programmable 0鈥?to 32鈥揃it Output Value
Separate Ports for Control and Match Operations
Single 3.3 V 鹵 5% Supply
IEEE Standard 1149.1 Test Port (JTAG)
Industrial Temperature Versions Available
Available Products and Specifications
Part Number
MCM69C232TQ
MCM69C233TQ
MCM69C432TQ
MCM69C433TQ
Configuration
4K x 64
4K x 64
16K x 64
16K x 64
V
DD
3.3 V
3.3V
3.3V
3.3V
Speed
160 ns match time
210 ns match time
180 ns match time
240 ns match time
Package
100-Pin TQFP
100-Pin TQFP
100-Pin TQFP
100-Pin TQFP
For More Information On This Product,
Go to: www.freescale.com
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