CYNSE10512A-133FGC Cypress Semiconductor Corp, CYNSE10512A-133FGC Datasheet - Page 57

• 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
6.5.1
This subsection covers single-searches with a single device configured with tables of different widths (×72, ×144, ×288). Figure 6-6
shows three sequential searches: first, a 72-bit Search on a ×72-configured table; a 144-bit Search on a ×144-configured table;
and a 288-bit Search on a ×288-configured table that each results in a hit. Figure 6-7 shows the sample table.
Note: If the mixed-size tables include a 576-bit table, then the device can only operate in the Enhanced Mode, as the maximum
table width allowed in the Non-Enhanced Mode is 288 bits.
One way to create multiple tables of different widths in an NSE is by having table designation bits. It is assumed that bits [71:70]
for each entry will be assigned such table designation bits. DQ[71:70] will be 00 in each of the two A and B cycles of the ×72-bit
Search (Search1). DQ[71:70] is 01 in each of the A and B cycles of the ×144-bit Search (Search2). DQ[71:70] is 10 in each of
the A, B, C, and D cycles of the ×288-bit Search (Search3).
DQ bus cotent
Mixed-size Single Searches with One Device on Tables Configured with Different Widths
288-bit
Search
Data on DQ bus during 2
is compared to 2
word of the 288-bit entry so on and so
forth...
Notice:
Data on DQ bus during 1
is compared to lowest address 72-bit
word of the 288-bit entry;
[287:216]
CLK2X
0x0
Big-Endian approach
1
st
nd
[215:144]
CLK2X
0x1
lowest address 72-bit
2
nd
[143:72]
nd
Figure 6-5. Search Key format on DQ bus for a 288-bit search
CLK2X
st
0x2
3
CLK2X cycle
CLK2X cycle
rd
CLK2X
[71:0]
0x3
4
th
CONFIDENTIAL
NSE organization
0x0
0x1
0x2
0x3
:
:
[287:216]
[215:144]
[143:72]
[71:0]
DQ bus cotent
Search
288-bit
Data on DQ bus during 2
is compared to 2
word of the 288-bit entry so on and so
forth...
Notice:
Data on DQ bus during 1
is compared to lowest address 72-bit
word of the 288-bit entry;
Little-Endian approach
CLK2X
[71:0] [143:72]
0x0
1
st
nd
CLK2X
0x1
lowest address 72-bit
2
nd
[215:144] [287:216]
nd
CLK2X
st
0x2
3
CLK2X cycle
CLK2X cycle
rd
CLK2X
0x3
4
th
CYNSE10512A
CYNSE10256A
CYNSE10128A
NSE organization
0x0
0x1
0x2
0x3
:
:
[287:216]
[215:144]
[143:72]
[71:0]
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