CYNSE10128-083FGCI CYPRESS [Cypress Semiconductor], CYNSE10128-083FGCI Datasheet - Page 68

• Manufacturer Part Number: CYNSE10128-083FGCI
• Manufacturer: CYPRESS [Cypress Semiconductor]

Notes:
Document #: 38-02069 Rev. *F
HLAT = 001 (binary), TLSZ = 01 (binary), LRAM = 0 (binary), LDEV = 0 (binary).
Note: |(LHI_0[6:0]) and &(LHI_1_L[6:0]) stands for the boolean ‘OR’ and ‘AND’ respectively of the entire LHI bus.
Note: Each bit in LHO_0[1:0] and LHO_1_L[1:0] is the same logical signal.
This timing diagram is for device #0 only, High-Z means this device is not driving, but other device in the cascade may be
driving the bus.
• Each “cycle” consists of 2 CLK2x cycles, which is effectively one CLK1x cycle.
• The latency of SSV and SSF specified by HLAT refers to CLK1x cycles.
• LHO_0[1:0] will be valid 4 (CLK1x) cycles after the search parameter is sampled, regardless of the number of searches entered;
• For TLSZ[1:0] = 01, all signals on SRAM interface will be driven 5 (CLK1x) cycles after the search parameter is sampled,
M = 25 for CYNSE10512, 24 for CYNSE10256, 23 for CYNSE10128
e.g., the search parameter A entered on DQ bus is sampled at cycle 1, LHO_0[1:0] will be available at cycle 5.
regardless of the number of searches; e.g., the search parameter A sampled on cycle 1 is a hit, thus the address value sent
to SADR bus and the rest of the SRAM control signals will be driven at cycle 6.
&(LHI_1_L[6:0])
LHO_1_L[1:0]
|(LHI_0[6:0])
LHO_0[1:0]
SADR[
CMD[10:2]
CMD[1:0]
CLK2X
PHS_L
CMDV
ALE_L
WE_L
OE_L
CE_L
SSV
M
SSF
DQ
:0]
Figure 6-15. Timing Diagram for 72-bit MultiSearch Device Number 0
0
0
1
1
z
z
z
z
z
z
z
0
cycle
M-Search1 M-Search3
A B A B A B A B
1
A
10
B
cycle
M-Search2 M-Search4
CONFIDENTIAL
2
C
PRELIMINARY
10
D
cycle
3
E
10
1
F
cycle
4
G
10
H
M-Search5
Hit
cycle
A B
5
I J
10
cycle
Addr Addr
6
A
0
0
1
1
Miss
z
z
z
z
cycle
7
C
0
1
1
0
1
Hit
z
z
z
z
z
z
Addr
cycle
0
E
0
0
1
1
1
8
Miss Hit
0
z
z
cycle
z
z
z
z
9
1
1
Addr
Miss
1
H
cycle
z
z
Addr
10
0
0
I
1
Addr
J
cycle
11
1
1
CYNSE10512
CYNSE10256
CYNSE10128
Hit
cycle
12
0
0
1
z
z
z
z
z
z
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