Preliminary Data Sheet
LANCAM
®
1
ST
Family
FEATURES AND BENEFITS
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Full compatibility among all LANCAM 1
ST
devices, allowing CAM density variations
within any application
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Full CAM technology for simplicity and
speed: one single cycle to find, learn, or
delete an entry
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3.3 volt operation for low power dissipation
Powerful LANCAM instruction set for
application flexibility
Partionable CAM/RAM array for associated
data storage
Low cost per entry for cost sensitive
applications
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High density content-addressable memory
(CAM) family
2K (2481L), 4K (4481L), and 8K (8481L) words
64-bit per word memory organization
Fast 100 ns compare speed
MUSIC’s patented CAM/RAM partitioning
Powerful LANCAM instruction set
16-bit I/O
3.3 volt operation
44 pin PLCC
DISTINCTIVE CHARACTERISTICS
D AT A (64)
MUX
D AT A (16)
VC C
D Q (15–0)
(16 )
I/O B UF FERS
G ND
D AT A (16)
D EM U X
D AT A (64)
C O M M A N D S & STA TU S
(16 )
SO U R C E A N D
D ESTIN ATIO N
SEG M EN T
C O U NT ERS
C O M PA R A ND
M A SK 1
M A SK 2
2 N x 2 VA LID ITY BITS
/E
/M F
A DD R ESS D EC O D ER
PR IO RITY EN C O D ER
INST RU C TIO N (W /O )*
/W
C O N TRO L
/CM
/RESE T
A DD R E SS A DD R E SS
N EXT FR EE AD D RESS (R /O )
C O N TRO L
SEG M EN T CO N TR O L
STA TU S (15–0 ) (R/O )*
STA TU S (3 1–16) (R / O )
R EG ISTER S ET
M A TC H A D DR , /M F
/M M , /FF
N+ 1
2
N
/FF
C AM A R RA Y
2 N WO RD S
X 64 BITS
Block Diagram
MUSIC Semiconductors, the MUSIC logo, LANCAM, and the phrase “MUSIC Semiconductors” are
registered trademarks of MUSIC Semiconductors. MUSIC is a trademark of MUSIC
Semiconductors. Certain features of this device are patented under U.S. Patent 5,383,146.
1 October 1998 Rev. 1a
MUSIC [ MUSIC SEMICONDUCTORS ]
