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CYNSE10512 Datasheet(PDF) 38 Page - Cypress Semiconductor

Part # CYNSE10512
Description  Ayama??10000 Network Search Engine
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CYNSE10512 Datasheet(HTML) 38 Page - Cypress Semiconductor

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CONFIDENTIAL
PRELIMINARY
CYNSE10512
CYNSE10256
CYNSE10128
Document #: 38-02069 Rev. *F
Page 38 of 153
5.4.15
Block Priority Register (BPR)
The BPR is only accessible when the device is in the Enhanced mode. There is one BPR for each block in the device. For each
Priority in the BPR, there is an alias address (Block Priority Register Address) which allows individual priorities to be updated.
Table 5-17 shows the BPR fields.
Table 5-17. Block Priority Register Description
Field
Range
(decimal)
Initial Value
(binary)
Description
PRIORITY3
[7:0]
0
Soft Priority #3. There are four Priority fields in each BPR. Each Priority represents the
priority of a sub-block located within the block associated with this register. Priority value
of 00 (hex) is highest and FF (hex) is lowest in priority.
The addresses in a block associated with each Soft Priority is as follows:
Entry Index 0 to 511: Priority0
Entry Index 512-1023: Priority1
Entry Index 1024-1535: Priority2
Entry Index 1536-2047: Priority3
PRIORITY2
[15:8]
0
Soft Priority #2. See Soft Priority #3 description.
PRIORITY1
[23:16]
0
Soft Priority #1. See Soft Priority #3 description.
PRIORITY0
[31:24]
0
Soft Priority #0. See Soft Priority #3 description.
[59:32]
Reserved.
V3
[60]
0
V #3. There are four V fields in each BPR. Each field represent the valid bit for a sub-block
within the block associated with this register. If this bit is set to 1 and the Soft Priority in
the CPR selected by the operation matches, the associated sub-block will participate in
the operation. If this bit is set to 0, the associated sub-block will not participate in a Search
operation.
V2
[61]
0
V #2. See V #3 description.
V1
[62]
0
V #1. See V #3 description.
V0
[63]
0
V #0. See V #3 description.
[71:64]
Reserved.
7
15
23
0
39
47
55
31
63
71
PRIORITY3
PRIORITY2
PRIORITY1
PRIORITY0
Figure 5-23. Block Priority Register
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