CYNSE70128-83BGC Cypress Semiconductor Corp, CYNSE70128-83BGC Datasheet - Page 20

• Manufacturer Part Number: CYNSE70128-83BGC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYNSE70128-83BGC

• Operating Supply Voltage (min): 1.425V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Package Type: BGA
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

During a Search operation, the search data bit (S), data array bit (D), mask array bit (M), and global mask bit (G) are used in the
following manner to generate a match at that bit position (see Table 8-1). The entry with a match on every bit position results in
a successful search during a Search operation.
Table 8-1. Bit Position Match
In order for a successful search within a device to make the device the local winner in the Search operation, all 72-bit positions
must generate a match for a 72-bit entry in 72-bit-configured quadrants, or all 144-bit positions must generate a match for two
consecutive even and odd 72-bit entries in quadrants configured as 144 bits, or all 288-bit positions must generate a match for
four consecutive entries aligned to four entry-page boundaries of 72-bit entries in quadrants configured as 288 bits.
An arbitration mechanism using a cascade bus determines the global winning device among the local winning devices in a Search
cycle. The global winning device drives the SRAM bus, SSV, and the SSF signals. In case of a Search failure, the device(s) with
the LDEV and LRAM bits set drive(s) the SRAM bus, SSF, and SSV signals.
The CYNSE70128 device can be configured to contain tables of different widths, even within the same chip. Figure 8-2 shows
a sample configuration of different widths.
Document #: 38-02040 Rev. *F
G
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X
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X
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S
X
X
0
0
1
1
CYNSE70128
Match
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