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