Kawasaki LSI
9M Classification CAM
PRELIMINARY
4.5. CNTL Bus (CNTL[15:0])
The CNTL bus (CNTL[15:0]) defines the operation. The function of the CNTL bus is classified into
four categories as follows:
• Control of a search operation
• Control of a Weighted Search operation
• Control of a command
• Control of an access to a register
As shown below, CNTL[13:12] defines the operation, and CNTL[11:5] defines the parameters, and
CNTL[4:0] defines the Mask Register number. Also, the most significant 2bits of Segment number
are specified onto CNTL[15:14]. As for the parameters and the Mask Register number, refer to the
data sheet.
15 14 13 12 11
54
0
Extra
0 Segment 0 1 Search Operation Field
Field
Global
Mask
Normal Search control
15 14 13 12 11
54
0
0
0
1 1 Search Operation Field
Global
Mask
Weighted Search
control
15 14 13 12 11
Extra
0 Segment 0 0
Field
Operation Field
54
0
Global
Mask
Command control
15 14 13 12 11
54
0
0 0 10
Address Field
Global
Mask
Register control
Version 1.2.0
9
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