MU9C4320L Datasheet, PDF (1/32 Pages) MUSIC Semiconductors – 4K x 32 Content Addressable Memory (CAM) with a 32-bit wide data interface

Data Sheet
MU9C4320L ATMCAM
APPLICATION BENEFITS
• High performance VPI/VCI translation for ATM
switches and routers, up to OC-48
• Fully deterministic translation, independent from the
size of the list and the length of VPI/VCI
• Pipelined architecture for increased throughput
• No limitation of the range of legal values for
VPI/VCI, guaranteeing full interoperability
• Cell tagging can be performed without any time
penalty
• Easy buffer management in “Find and Replace” mode
because of the ability to check CLP field during
VPI/VCI translation
• No limitation in the amount of associated information
stored with each connection
• No time penalty when checking both VPI/VCI and
VPI only connections
DISTINCTIVE CHARACTERISTICS
• 4096 x 32-bit Content Addressable Memory (CAM)
• 70 ns compare and output time per VPI/VCI
• 32-bit Data I/O port
• 16-bit Match Address Output port directly addresses
external RAM containing associated data of any
width
• Address/Control bus directly controls CAM
operations for faster throughput
• Instruction and Status registers for optional software
control
• Simultaneously compares Virtual Paths and Virtual
Channels
• Cascadable for increased depth
• Extensive set of control states for flexibility
• JTAG interface
• 100-pin TQFP package; 3.3 volt operation
DQ31–0
/VB
/E
/CS1
/CS2
/W
/OE
/AV
AC11–0
/RESET
TCLK
TMS
TDI
TDO
/TRST
CONTROL
AND
ADDRESS
DECODER
COMPARAND REGISTER
MASK REGISTERS 1–7
ADDRESS REGISTER
CONFIGURATION REGISTER
STATUS REGISTER
INSTRUCTION REGISTER
DEVICE SELECT REGISTER
4K x 32CAM
Figure 1: Block Diagram
AA11–0
PA3–0
PRIORITY
ENCODER
AND
FLAG
LOGIC
/FI
/FF
/MI
/MF
/MV
/ MM
MUSIC Semiconductors, the MUSIC logo, and the phrase “MUSIC Semiconductors” are
Registered trademarks of MUSIC Semiconductors. MUSIC is a trademark of
MUSIC Semiconductors.
November 13, 2000 Rev. 3