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Details, datasheet, quote on part number:NL84620R
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Datasheet text preview:
SyncCAM-1R
Synchronous Content Addressable Memory
NL84620R
4Kx64 (256K)
Description
The NL84620R is a 256K bit Synchronous Content Addressable Memory (SyncCAM®-1R). The device performs high-speed parallel search operations on memory tables while simultaneously capturing and manipulating data from a data stream. Its primary application is as an address filter or an address translator for Fast Ethernet, Gigabit Ethernet, and ATM switches. The NL84620R has a streamlined instruction set and is a cost reduced version of the full-featured NL84620 device.
Features
· · · · Match Flag times: 18/22 ns CAM Index output (pipeline mode): 10/12 ns Sustained searches of up to 40 Million/Second Separate 64-bit Comparand I/O bus, 32-bit Results bus and 14-bit Instruction bus
· · · ·
Four 64-bit wide Mask Registers for easy masking of compare or write operations 14-bit instruction bus enables single cycle execution of all instructions Depth-expansion with no glue logic required 3.3V TTL compatible CMOS, 292-pin PBGA Package
63
0
M UX
64
Comparand Register Global Mask Registers 0, 1, 2 & 3
64 4K x 64 CAM Array
32 R B US Results Bus
32
Status Register 0 (SR0)
64
Clock Word Enables Instruction Bus R e se t Chip Enable Cascade In Match Flag In M ultiple Match Flag Input Full Flag Input
Control Logic
4 14
A ddr e s s C o u nt e r
System Match Flag Cascade Out Match Flag Out M ultiple Match Flag Full Flag
Figure 1 NL84620R Block Diagram
Revision 3.0 Subject to change without notice 1
4K x 1 Validity Bit
Comparand Bus C B US 64
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
A CBUS02 CBUS04 CBUS06 CBUS10 CBUS12 CBUS15 CBUS18 CBUS21 CBUS24 CBUS25 CBUS27 CBUS30 CBUS32 CBUS35 CBUS37 CBUS42 CBUS43 CBUS47 CBUS49 CBUS50 A
Revision 3.0
VDD VDD GND VDD VDD GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND VDD VDD GND GND VDD VDD GND GND GND (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) VDD (NC) VDD VDD GND (NC) (NC) (NC) VDD VDD (NC) (NC) VDD (NC) (NC) (NC) GND GND RBUS01 RBUS07 (NC) (NC) VDD VDD VDD GND RBUS08 RBUS13 GND GND VDD GND GND VDD VDD GND GND VDD VDD GND GND GND CBUS16 CBUS19 CBUS23 VDD CBUS29 CBUS33 CBUS39 VDD CBUS40 CBUS45 GND CBUS52 CBUS53 CBUS54 CBUS55 CBUS56 GND CBUS58 CBUS57 CBUS59 VDD (NC) (NC) (NC) VDD (NC) (NC) (NC) VDD CBUS60 CBUS61 CBUS63 CBUS62 (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) (NC) RBUS30 RBUS31 RBUS28 RBUS29 RBUS26 RBUS25 RBUS27 GND RBUS23 RBUS24 RBUS20 RBUS21 RBUS22 RBUS02 RBUS04 RBUS06 RBUS09 RBUS12 RBUS14 RBUS16 RBUS19 RBUS00 RBUS03 RBUS05 RBUS10 RBUS11 RBUS15 RBUS17 RBUS18
B CBUS01 CBUS05 CBUS07 CBUS08 CBUS11 CBUS14 CBUS17 CBUS20 CBUS22 CBUS26 CBUS28 CBUS31 CBUS34 CBUS36 CBUS38 CBUS41 CBUS44 CBUS46 CBUS48 CBUS51 B C D E F G H J K L M N P R T U V W Y 7 8 9 10 11 12 13 14 15 16 17 18 19 20
C CBUS00 CBUS03
GND
CBUS09 CBUS13
D IBUS02 IBUS00
/RST
GND
E IBUS04 IBUS03 IBUS01
GND
F IBUS07 IBUS06 IBUS05
VDD
G IBUS09 IBUS08
VDD
VDD
H IBUS12 IBUS11 IBUS10
GND
J
/CE
CLK
IBUS13
GND
K
GND
/WEN2
/WEN3
VDD
L /WEN1 /WEN0
VDD
VDD
Subject to change without notice
5 6
M
/FFI
/MMFI
VDD
GND
N CSCUI
/MFDI
CSCDI
GND
P
(NC)
CSCUO
(NC)
VDD
R CSCDO /MFDO
VDD
VDD
T
(NC)
/SMF
GND
GND
U
/MMF
/FF
GND
GND
V
(NC)
(NC)
GND
(NC)
W
(NC)
(NC)
(NC)
(NC)
NL84620R
2
Y
(NC)
(NC)
(NC)
(NC)
1
2
3
4
Figure 2 NL82721 Ball Assignment (292 PBGA, Top View)
NL84620R
Figure 3: 292 PBGA Package Dimensions
Revision 3.0
Subject to change without notice
3
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