MU9C8480B Datasheet, PDF (1/32 Pages) MUSIC Semiconductors – LANCAM B Family

Data Sheet
LANCAM B Family
APPLICATION BENEFITS
• 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
• 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)
DQ (15—0)
(16)
DATA (16)
MUX
DATA (64)
DATA (16)
TRANSLATE
802.3 / 802.5
DATA (16)
DEMUX _{DATA (64)}
VCC
GND
/E
/W
/CM
/RESET
/EC
COMMANDS &
STATUS (16)
SOURCE AND
DESTINATION
SEGMENT
COUNTERS
CONTROL
16
INSTRUCTION (W/O)
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
N
MATCH ADDR &
/MA FLAG
/MM, /FL
N+1
2
COMPARAND
MASK 1
MASK 2
CAM ARRAY
2^N WORDS
X 64 BITS
/MA
/MM
2
/FF
MATCH
AND
/FI
FLAG
LOGIC
/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