CYNSE70064A-50BGC Cypress Semiconductor Corp, CYNSE70064A-50BGC Datasheet - Page 70

• Manufacturer Part Number: CYNSE70064A-50BGC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYNSE70064A-50BGC

• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Package Type: BGA
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

10.12
Figure 10-49 shows the timing diagram for a Search command in the 272-bit-configured table (CFG = 10101010) consisting of a
single device for one set of parameters: TLSZ = 00, HLAT = 001, LRAM = 1, and LDEV = 1. The hardware diagram for this Search
subsystem is shown in Figure 10-50.
CFG = 10101010, HLAT = 001, TLSZ = 00, LRAM = 1, LDEV = 1.
The following is the sequence of operation for a single 136-bit Search command (also refer to Subsection 10.2, “Commands and
Command Parameters” on page 19).
Document #: 38-02041 Rev. *F
• Cycle A: The host ASIC drives the CMDV HIGH and applies Search command code (10) on CMD[1:0] signals. CMD[5:3]
signals must be driven with the index to the GMR pair used for bits [271:136] of the data being searched. DQ[67:0] must be
driven with the 68-bit data ([271:204]) to be compared to all locations 0 in the four 68-bits-word page. The CMD[2] signal must
be driven to logic 1. Note. CMD[2] = 1 signals that the Search is a ×272-bit Search. CMD[8:3] in this cycle is ignored.
272-bit Search on Tables Configured as û272 Using a Single CYNSE70064A Device
DQ[67:0]
CMDV, CMD[8:0]
SADR[21:0]
CMD[8:2]
CMD[2]
PHS_L
CMDV
CMD[1:0]
ALE_L
WE_L
CLK2X
OE_L
CE_L
SSV
SSF
SSF, SSV
DQ
Figure 10-49. Timing Diagram for 272-bit Search (One Device)
Figure 10-50. Hardware Diagram for a Table with One Device
1
0
0
0
BHI[2:0]
1
BHO[2:0]
1
cycle
A B A B A B A B
A B C D A B C D
1
Search1
01
cycle
D1
2
LHO[1]
cycle
3
Search2
D2
cycle
01
CYNSE70064A
4
cycle
5
6
cycle
5
6
A1
1
0
0
0
4
cycle
LHI
7
1
1
Search1
1
1
3
1
0
Hit
cycle
2
8
0
cycle
1
9
Search2
0
1
LHO[0]
Miss
0
cycle
10
0
CYNSE70064A
SRAM
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