CYNSE10128-083FGCI CYPRESS [Cypress Semiconductor], CYNSE10128-083FGCI Datasheet - Page 37

• Manufacturer Part Number: CYNSE10128-083FGCI
• Manufacturer: CYPRESS [Cypress Semiconductor]

5.4.14
The BMR is only accessible when the device is in the Enhanced mode. There is one BMR for each block in the device. The
following table (Table 5-16) shows the BMR fields.
Table 5-16. Block Mini-Key Register Description
Document #: 38-02069 Rev. *F
Mini-Key3
Mini-Key2
Mini-Key1
Mini-Key0
Field
NES
Block Mini-Key Register (BMR)
71
(decimal)
Range
[39:32]
[47:40]
[55:48]
[63:56]
[71:64]
[31:2]
[1:0]
63
Mini-Key0
Initial Value
(binary)
55
Mini-Key1
0
0
0
0
0
Figure 5-22. Block Mini-Key Register
47
NSE Entry Size. This field selects the entry width for the associated block. A
Search operation that is of different size than the NES will cause the block to not
participate in the search.
The NES encoding is as follows:
00: 72-bit
01: 144-bit
10: 288-bit
11: 576-bit
For proper free-entry address computation, this NES field must be set before
initializing the entries in a block. The entries of a block must then be initialized to
a known value before accessing the block.
Reserved.
Mini-Key #3. There are four Mini-Key fields in each BMR. When an operation
occurs, all four fields are checked against the Mini-Key in the selected CPR by the
command. If there is a match, the associated block is enabled to participate in the
operation.
Mini-Key #2. See Mini-Key #3 description.
Mini-Key #1. See Mini-Key #3 description.
Mini-Key #0. See Mini-Key #3 description.
Reserved.
Mini-Key2
CONFIDENTIAL
PRELIMINARY
39
Mini-Key3
31
Description
23
15
CYNSE10512
CYNSE10256
CYNSE10128
7
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