Data Sheet
LIST-XL Family
APPLICATION
APPLICATION BENEFITS
Accelerate table search and data translation
operations such as those found in:
q
q
DISTINCTIVE CHARACTERISTICS
256 word and 512 word by 64-bit content-
addressable memory (CAM)
Compare any data with all the entries stored in the
memory array in a single 70 ns cycle
Add or delete data in the CAM in a single cycle
Match and Multiple match signals
Immediate access to associated data translations,
attributes, or pointers
Flexible patented CAM/RAM partitioning
Two selectable mask registers with bit by bit
capability
Powerful and flexible instruction set
Proximate match capability
16-bit I/O; 32-Pin LQFP; 3.3 volt operation
LAN Address processing
Cache tag buffers
Hash collision resolution
q
q
q
q
q
q
q
Branch tables
q
q
Data decoders
q
q
Other processes or algorithms that require
table searches
q
q
q
D A T A (64)
MUX
D A T A (16)
VC C
I/O B U F F ERS
G ND
D Q (15鈥?)
(16 )
D A T A (16)
D EM U X
D A T A (64)
C O M M A N D S & ST A T U S
(16 )
SO U R C E A N D
D EST IN A T IO N
SEG M EN T
C O U N T ER S
C O M PA R A N D
M A SK 1
M A SK 2
/M F
IN ST R U C T IO N (W /O )*
/W
C O N TR O L
2
N
x 2 VA L ID IT Y B IT S
A D D R ESS D EC O D ER
PR IO R IT Y EN C O D ER
/E
A D D R E SS A D D R E SS
N EXT F R EE A D D R ESS (R /O )
C O N TR O L
/M M
/FF
N
CAM ARRAY
2N W O R D S
X 64 B IT S
/C M
/R ESE T
SEG M EN T C O N T R O L
ST A T U S (15鈥? ) (R /O )*
ST A T U S (3 1鈥?6) (R / O )
R EG IST ER S ET
M A T C H A D D R , /M F
/M M , /F F
N +1
2
Block Diagram
LANCAM, the MUSIC logo, and the phrase 鈥淢USIC Semiconductors鈥?are registered trademarks of MUSIC Semiconductors. MUSIC is
a trademark of MUSIC Semiconductors. Certain features of this device are patented under US Patent 5,383,146.
13 June 2001 Rev. 2
Rev.