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MU9C1480A-90DC 参数 Datasheet PDF下载

MU9C1480A-90DC图片预览
型号: MU9C1480A-90DC
PDF下载: 下载PDF文件 查看货源
内容描述: LANCAM A / L系列 [LANCAM A/L series]
分类和应用: 存储内存集成电路静态存储器双倍数据速率局域网
文件页数/大小: 32 页 / 332 K
品牌: MUSIC [ MUSIC SEMICONDUCTORS ]
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Data Sheet
LANCAM A/L series
APPLICATION BENEFITS
The 256x64 to 4Kx64 LANCAM A/L series facilitate
numerous operations:
Fast speed allows processing of both DA and SA
within 450 ns, equivalent to 138 ports of 10 Base-T or
13 ports of 100 Base-T Ethernet (50 ns device)
Full CAM features allow all operations to be masked
on a bit-by-bit basis
Powerful instruction set for any list processing need
Shiftable Comparand and Mask registers assist in
proximate matching algorithms
Cascadable to any practical length with no
performance penalties
Industrial temperature grades for harsh environments
Available in 3.3 Volt for lower power systems
(not recommended for new designs)
DISTINCTIVE CHARACTERISTICS
High density CMOS Content Addressable Memory
(CAM)
Available in the following depths: 256 (3480), 512
(5480), 1K (1480), 2K (2480) and 4K (4480) words.
64-bit per word memory organization
16-bit I/O
Fast 50 ns compare speed (1480A and 2480A)
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
5 Volt (A series) or 3.3 Volt (L series) operation
44-pin PLCC package
(also available in Lead-Free package upon request)
(Use functional compatible LANCAM B family for new designs)
DATA (16)
I/O BUFFERS
MUX
DATA (64)
VCC
GND
DQ (15—0)
(16)
DATA (16)
TRANSLATE
802.3 / 802.5
DATA (16)
DEMUX
DATA (64)
COMMANDS &
STATUS (16)
/E
INSTRUCTION (W/O)
/W
CONTROL
/CM
/RESET
16
ADDRESS
NEXT FREE ADDRESS (R/O)
CONTROL
SEGMENT CONTROL
PAGE ADDRESS (LOCAL)
DEVICE SELECT (GLOBAL)
STATUS (15-0) (R/O)
STATUS (31-16) (R/O)
REGISTER SET
SOURCE AND
DESTINATION
SEGMENT
COUNTERS
ADDRESS DECODER
COMPARAND
MASK 1
MASK 2
2
N
X 2 VALIDITY BITS
PRIORITY ENCODER
/MA
/MM
N
CAM ARRAY
2
N
WORDS
X 64 BITS
2
/EC
MATCH ADDR &
/MA FLAG
/MM, /FL
N+1
2
MATCH
AND
FLAG
LOGIC
/FF
/FI
/MF
/MI
Figure 1: LANCAM B Family Block Diagram
MUSIC Semiconductors, the MUSIC logo, and the phrase "MUSIC Semiconductors" are
Registered trademarks of MUSIC Semiconductors. MUSIC is a trademark of
MUSIC Semiconductors.
April 18, 2005 Rev. 1