參數(shù)資料
型號： MU9C1640-55DC
英文描述： Content Addressable Memory
中文描述： 內(nèi)容可尋址存儲器
文件頁數(shù)： 1/28頁
文件大小： 246K
代理商： MU9C1640-55DC
MU9C1480A/L LANCAMs
21 May 1999 Rev. 3.0 Draft
Block Diagram
Data Sheet Draft
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’s 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
APPLICATION BENEFITS
The 1024 x 64-bit LANCAM facilitates numerous
operations:
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
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.
ADDRESS
/W
/E
/CM
/EC
DQ (15—0)
(16)
CONTR OL
CAM ARRAY
1024 WORDS
X 64 BITS
COM PARAND*
M ASK 1
M ASK 2
1
P
M ATCH
AND
FLAG
LOGIC
/FF
/FI
/M F
/MI
COM M ANDS & STATUS
2
10
M UX
DATA (16)
TRANS LATE
802.3/802.5
DATA (16)
DEM UX
SOURCE AND
DESTINA TION
SEGM ENT
COUNTER S
VCC
GND
INSTRUC TION (W/O)*
NEXT FREE ADDRESS (R/O)
CONTR OL
SEGM ENT CONTROL
PAGE ADDRESS (LOCAL)
DEVICE SELECT (GLOBAL)
ADDRESS
STATUS (15-0) (R/O)*
STATUS (31-16) (R/O)
REGISTER SET
2
M ATCH ADDR
& /M A FLAG
/M M , /FL
DATA (16)
(16)
DATA (64)
DATA (64)
A
/RESET
/MA
/M M
11
16
I
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.
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