Data Sheet
LANCAM B Family
APPLICATION BENEFITS
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New low-cost LANCAM family in a space-saving
LQFP package
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
Full CAM features allow all operations to be masked
on a bit-by-bit basis
Powerful, LANCAM A/L compatible 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
Dual footprint connections to conserve board space
3.3 Volt for lower power systems
DISTINCTIVE CHARACTERISTICS
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High density CMOS Content Addressable Memory
(CAM)
1K (1480B), 2K (2480B) , 4K (4480B), 8K (8480B)
words
64-bit per word memory organization
16-bit I/O
Fast 50 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
3.3 Volt operation
44- and 64-pin LQFP package
(also available in Lead-Free package)
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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
MUSIC Semiconductors, the MUSIC logo, and the phrase "MUSIC Semiconductors" are
Registered trademarks of MUSIC Semiconductors. MUSIC is a trademark of
MUSIC Semiconductors.
March 14, 2005 Rev. 5.1
MUSIC [ MUSIC SEMICONDUCTORS ]
