CYNSE10512A-133FGC Cypress Semiconductor Corp, CYNSE10512A-133FGC Datasheet - Page 27

• Manufacturer Part Number: CYNSE10512A-133FGC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYNSE10512A-133FGC

• Operating Supply Voltage (typ): 1.2V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

Document #: 38-02110 Rev. *B
the sixteen pairs of global masks during Search and Write operations. In 72-bit Search and Write operations, the host ASIC must
program both the even and odd mask registers with the same values. For a MultiSearch operation, see section 5.1.2.4 for details.
Each mask bit in the GMRs is used during Search and Write operations. In a Search operation, setting the mask bit to 1 enables
while setting the mask bit to 0 disables compares at the corresponding bit position (forced match). In Write operations to the data
or mask array, setting the mask bit to 1 enables Write while setting the mask bit to 0 disables Write at the corresponding bit
position. Write operation to internal registers does not use the GMR to mask the data and ignores the GMR selection when the
command is issued.
When the device powers-up, the GMR registers are initialized to 0. Figure 5-9 below shows each portion (Even, Odd) of each
GMR, and what address (in decimal) is required to access that register.
5.4.3
The device contains eight Search Successful Registers (SSR) to hold the index of the location at which a successful search
occurred. The format of each SSR is described in Table 5-7. The Search command specifies which SSR stores the index of a
specific Search command in cycle B of the Search instruction. Subsequently, the host ASIC can use this register to access that
data array, mask array, or external SRAM using the index as part of the indirect access address. The selected register is updated
when the device performs a Search operation regardless of the operation modes.
Search Successful Register (SSR)
71
63
55
Figure 5-9. Addressing the Global Mask Register Array
CONFIDENTIAL
Figure 5-10. Search Successful Register
47
Index
GMR
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
143
39
Even
100
102
104
106
108
110
N = 17 for CYNSE10512A
32
34
36
38
40
42
44
46
96
98
72
31
101
103
105
107
109
111
Odd
33
35
37
39
41
43
45
47
97
99
72
0
23
15
N = 16 for CYNSE10256A
N = 15 for CYNSE10128A
CYNSE10512A
CYNSE10256A
CYNSE10128A
INDEX
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