CYNSE10512A-133FGC Cypress Semiconductor Corp, CYNSE10512A-133FGC Datasheet - Page 60

• 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
The MSE bit in the Command Register must be set high to enable the MultiSearch feature. The same with the Enhanced Mode
(EMODE) bit. TLSZ = 01 (binary), LRAM = 1 (binary), LDEV = 1 (binary) for a single-device configuration. HLAT = 000 (binary)
for this example. The following is the sequence of operation for a single Search command (also refer to Subsection 6.2,
“Command Bus Parameters,” on page 50).
HLAT = 000 (binary), TLSZ = 01 (binary), LRAM = 1 (binary), LDEV = 1 (binary).
M = 25 for CYNSE10512A, 24 for CYNSE10256A, 23 for CYNSE10128A
• Cycle A:
— Command Bus: The host ASIC drives CMDV HIGH and applies Search command CMD[1:0] = “10”. The CMD[2] and
CMD[9] signals must be driven to logic 0 for the 72-bit search, but for 144-bit search, CMD[9] = 1 and CMD [2] = 0. For
288-bit and 576-bit searches, CMD[9] is don’t care, whereas CMD[2] = 1 for the first “A” cycle and 0 for the last “A” cycle.
{CMD[10],CMD[5:3]} signals must be driven with the index to the GMR pair for use in this Search operation. CMD[7:6]
signals must be driven with the same bits that will be driven on SADR[24:23] for CYNSE10512A, SADR[23:22] for
CYNSE10256A, SADR[22:21] for CYNSE10128A by this device if it has a hit. CMD[8] must be driven high on all Cycle A’s
in a command for MultiSearch operation. Note, CMD[8] must be driven low for all Cycle A’s of Single Search operations if
Enhanced mode and MultiSearch Enabled bits are set to 1 in the Command Register.
CMD[10:2]
SADR[
CMD[1:0]
CMD[2]
ALE_L
CLK2X
PHS_L
WE_L
CMDV
OE_L
CE_L
SSV
SSF
DQ
M
:0]
Logic 0 for A-cycles
for x72 and x144
Figure 6-8. Timing Diagram for Mixed MultiSearch (One Device)
1
1
1
0
CONFIDENTIAL
cycle
M-Search1
A B A B A B A B
W
D1
1
10
CMPR[2] on B-cycles
D2
X
cycle
1st x288 A-cycle
Y1Y2 Z1 Z2Z3 Z4
M-Search2
2
Logic 1 on the
D3
10
cycle
3
M-Search3
D4
cycle
10
4
×72 Hit
in Array 0
Addr W
cycle
A B A B
5
T1
×72 Hit
in Array 1 in Array 0
M-Search4
D5
cycle
10
6
T2
Addr
Addr Y
X
cycle
0
0
1
7
×144 Hit
Addr
Logic 0 on
the last A-cycle
Y2
cycle
Addr Z3
8
1
1
Miss in Array 1
0
cycle
9
1
in Array 1
0
0
×72 Hit
in Array 0
×72 Hit
cycle
10
Addr T
1
1
0
CYNSE10512A
CYNSE10256A
CYNSE10128A
1
0
0
Addr T2
Page 60 of 145
in Array 1
×288 Miss
1
1
0
in Array 1
×144 Hit
×288 Hit
in Array