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MU9C1480L-12DI Datasheet

  • MU9C1480L-12DI

  • Content Addressable Memory

  • 28頁(yè)

  • ETC

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Data Sheet Draft
MU9C1480A/L LANCAMs
廬
APPLICATION BENEFITS
The 1024 x 64-bit LANCAM facilitates numerous
operations:
脴
脴
New package saves space
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
Full CAM features allow all operations to
be masked on a bit-by-bit basis
Expanded powerful instruction set for any
list processing needs
Shiftable Comparand and mask registers
assist in proximate matching algorithms
Fully compatible with all MUSIC LANCAM
series, cascadable to any practical length
without performance penalties
脴
脴
脴
脴
脴
脴
脴
脴
脴
脴
脴
脴
DISTINCTIVE CHARACTERISTICS
1024 x 64-bit CMOS content-addressable
memory (CAM)
16-bit I/O
Fast 90 ns compare speed
Dual configuration register set for rapid context
switching
16-bit CAM/RAM segments with MUSIC鈥檚 patented
partitioning
/MA and /MM output flags to enable faster system
performance
Readable Device ID
Selectable faster operating mode with no wait
states after a no-match
Validity bit setting accessible from the
Status register
Single cycle reset for Segment Control register
44-Pin PLCC package / 44-Pin TQFP package
5 Volt (1480A) or 3.3 Volt (1480L) operation
脴
脴
脴
脴
M UX
DATA (1 6 )
DATA (6 4 )
V CC
I/O BU FFE E RS
G ND
TR ANS LA TE
8 0 2.3 /8 02 .5
DQ (1 5 鈥?0 )
(1 6 )
DATA (1 6 )
DATA (1 6 )
DE M UX
DATA (6 4 )
CO M M A NDS & S TATU S
(1 6 )
S O U RCE AN D
DE S TINA TIO N
S E G M E NT
CO U NTE R S
CO M P ARAN D*
M AS K 1
M AS K 2
/MA
ADD RE S S D E C O DE R
1 K X 2 V A LIDITY BITS
/E
INS TRUC TIO N ( W /O )*
/W
CO N TR O L
NE X T FRE E ADDR E S S (R/O )
/CM
CO N TR O L
/RE S E T
16
P AG E ADDR E S S (LO CA L)
DE V IC E S E LE CT (G LO B AL)
/E C
S TATU S (1 5 -0 ) ( R/O )*
/M M , /F L
S TATU S (3 1 -1 6 ) (R /O )
RE G IS TE R S E T
2
M ATCH ADD R
& /M A FLA G
11
S E G M E NT C O NTR O L
ADD RE S S ADD RE S S
10
P RIO R ITY E NCO D E R
/M M
CAM AR RAY
1 0 2 4 W ORDS
X 6 4 B ITS
2
/FF
M ATCH
AND
FL AG
LO G IC
/FI
/M F
/MI
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.
21 May 1999 Rev. 3.0 Draft
Note: This document version has not completed MUSIC鈥檚 internal approval process, therefore it should
be rechecked with a released version or with factory personnel.

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