MU9C1480A/L LANCAMs®
21 May 1999 Rev. 3.0 Draft
Block Diagram
Data Sheet Draft
DISTINCTIVE CHARACTERISTICS
Ø 1024 x 64-bit CMOS content-addressable
memory (CAM)
Ø 16-bit I/O
Ø Fast 90 ns compare speed
Ø Dual configuration register set for rapid context
switching
Ø 16-bit CAM/RAM segments with MUSIC’s patented
partitioning
Ø /MA and /MM output flags to enable faster system
performance
Ø Readable Device ID
Ø Selectable faster operating mode with no wait
states after a no-match
Ø Validity bit setting accessible from the
Status register
Ø Single cycle reset for Segment Control register
Ø 44-Pin PLCC package / 44-Pin TQFP package
Ø 5 Volt (1480A) or 3.3 Volt (1480L) operation
APPLICATION BENEFITS
The 1024 x 64-bit LANCAM facilitates numerous
operations:
Ø New package saves space
Ø New speed grade allows processing of both
DA and SA within 560 ns, equivalent to 111,
10 Base-T or 11, 100 Base-T Ethernet ports
Ø Full CAM features allow all operations to
be masked on a bit-by-bit basis
Ø Expanded powerful instruction set for any
list processing needs
Ø Shiftable Comparand and mask registers
assist in proximate matching algorithms
Ø Fully compatible with all MUSIC LANCAM
series, cascadable to any practical length
without performance penalties
LANCAM, the MUSIC logo, 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 US Patent 5,383,146.
ADD RE S S
/W
/E
/CM
/E C
DQ (15— 0 )
(16)
CO N TR O L
CAM AR RAY
10 24 W ORDS
X 6 4 B ITS
CO M P ARAN D*
MAS K 1
MAS K 2
MATCH
AND
FL AG
LO G IC
/FF
/FI
/M F
/MI
CO M M A NDS & S TATU S
2
10
MUX
DATA (1 6 )
TR ANS LA TE
80 2.3/802.5
DATA (1 6 )
DE M UX
S O U RCE AN D
DE S TINA TIO N
SEG M E NT
CO U NTE R S
VCC
GND
INS TRUC TIO N ( W /O )*
NE X T FRE E ADDR ESS (R/O )
CO N TR O L
S E G M E NT C O NTR O L
P AG E ADDR ESS (LO CA L)
DE VIC E S E LECT (G LO B AL)
ADD RE S S
S TATU S (1 5-0) ( R/O )*
S TATU S (3 1-16) (R /O )
RE G IS TER SE T
2
M ATCH ADD R
& /M A FLA G
/MM, /F L
DATA (1 6 )
(16)
DATA (6 4 )
DATA (6 4 )
/RESE T
/MA
/M M
11
16
Note: This document version has not completed MUSIC’s internal approval process, therefore it should
be rechecked with a released version or with factory personnel.