CYNSE70128-83BGC Cypress Semiconductor Corp, CYNSE70128-83BGC Datasheet - Page 34

• 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

The following is the sequence of operation for a single 72-bit Search command (also refer to “Command and Command Param-
eters,” Subsection 10.2 on page 22).
Document #: 38-02040 Rev. *F
CFG = 0000000000000000, HLAT = 010, TLSZ = 01, LRAM = 1, LDEV = 1.
Note: |(LHI[6:0]) stands for the boolean ‘OR’ of the entire bus LHI[6:0].
Note: Each bit in LHO[1:0] is the same logical signal.
• Cycle A: The host ASIC drives the CMDV high and applies Search command code (10) to CMD[1:0] signals. {CMD[10],
• Cycle B: The host ASIC continues to drive the CMDV high and to apply Search command (10) on CMD[1:0]. CMD[5:2] must
CMD[5:3]} signals must be driven with the index to the GMR pair for use in this Search operation. CMD[8:6] signals must be
driven with the same bits that will be driven on SADR[23:21] by this device if it has a hit. DQ[71:0] must be driven with the 72-
bit data to be compared. The CMD[2] signal must be driven to logic 0.
be driven by the index of the comparand register pair for storing the 144-bit word presented on the DQ bus during cycles A
and B. CMD[8:6] signals must be driven with the index of the SSR that will be used for storing the address of the matching
entry and hit flag (see page 8 for a description of SSR[0:7]). The DQ[71:0] continues to carry the 72-bit data to be compared.
SADR[23:0]
CMD[10:2]
PHS_L
CMD[1:0]
|(LHI[6:0])
CMDV
LHO[1:0]
ALE_L
CLK2X
OE_L
CE_L
WE_L
SSF
SSV
Figure 10-11. Timing Diagram for 72-bit Search Device Number 7 (Last Device)
DQ
0
0
0
0
1
0
cycle
Search1
1
A B A B A B A B
D1
01
cycle
Search2
2
D2
01
cycle
Search3
3
D3
01
cycle
4
Search4
D4
01
cycle
5
cycle
6
cycle
7
z
z
z
z
Search1
(Miss
on this
device .)
cycle
8
Search2
(Miss on
this device)
cycle
9
A4
z
z
Search3
(Local but not
global winner)
cycle
10
1
0
0
Search4
(Global
winner)
1
1
CYNSE70128
0
0
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