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EP1M350 Datasheet(PDF) 44 Page - Altera Corporation

Part # EP1M350
Description  Programmable Logic Device Family
PDF  86 Pages
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Manufacturer  ALTERA [Altera Corporation]
Direct Link  http://www.altera.com
Logo ALTERA - Altera Corporation

EP1M350 Datasheet(HTML) 44 Page - Altera Corporation

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Altera Corporation
Mercury Programmable Logic Device Family Data Sheet
Figure 23. Encoded CAM Address Outputs
Figure 24. Unencoded CAM Address Outputs
Notes to Figure 24:
(1)
For an unencoded output, the ESB only supports 31 input data bits. One input bit
is used by the select line to choose one of the two banks of 16 outputs.
(2)
If the select input is a 1, then CAM outputs odd words between 1 through 15. If
the select input is a 0, CAM outputs words even words between 0 through 14.
In single-match mode, it takes two clock cycles to write into CAM, but
only one clock cycle to read from CAM. In this mode, both encoded and
unencoded outputs are available without external logic. Single-match
mode is better suited for designs without duplicate data in the memory.
CAM
data[31..0] = 45
addr[15..0] = 12
Encoded Output
match = 1
Address
Data
10
11
12
13
15
27
45
85
CAM
data[30..0] =45
(1)
select
(2)
q0
Unencoded outputs.
q12 goes high to
signify a match.
q12
q13
q14
q15
Address
Data
10
11
12
13
15
27
45
85



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