CYNSE10512A-133FGC Cypress Semiconductor Corp, CYNSE10512A-133FGC Datasheet - Page 67

• 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
6.5.4
The hardware diagram of the Search subsystem of 31 devices is shown in Figure 6-15. Each of the four blocks in the diagram
represents eight Ayama 10000A devices (except the last, which has seven devices). The diagram for a block of eight devices is
very similar to the hardware diagram in Figure 6-10, except that the BHI[2:0] signals are connected to BHO of the previous block
(rather than being grounded) as shown in Figure 6-10. The following are the parameters programmed into the 31 devices:
The timing diagrams referred to in this paragraph reference the Hit/Miss assumptions defined in Table 6-10. For the purpose of
illustrating the timings, it is further assumed that there is only one device with a matching entry in each of the blocks. Figure 6-
16 shows the timing diagram for a Search command in the 144-bit-configured table of 31 devices for each of the eight devices
in block number 0. Figure 6-17 shows the same for the all the devices in block number 1 (above the winning device in that block).
Figure 6-18 shows the timing diagram for the globally winning device (defined as the final winner within its own and all blocks) in
block number 1. Figure 6-19 shows the timing diagram for all the devices below the globally winning device in block number 1.
Figure 6-20, Figure 6-21, and Figure 6-22 show the timing diagrams of the devices above the globally winning device, the globally
winning device, and the devices below the globally winning device, respectively, for block number 2. Figure 6-23, Figure 6-24,
Figure 6-25, and Figure 6-26 show the timing diagrams of the devices above globally winning device, the globally winning device,
and the devices below the globally winning device except the last device (device 30), respectively, for block number 3.
The 144-bit Search operation is pipelined and executes as follows:
Table 6-10. Hit/Miss Assumptions
• First thirty devices (devices 0–29): TLSZ = 10 (binary), HLAT = 001 (binary), LRAM = 0 (binary), and LDEV = 0 (binary).
• Thirty-first device (device 30): TLSZ = 10 (binary), HLAT = 001 (binary), LRAM = 1 (binary), and LDEV = 1 (binary).
• For Non-Enhanced Mode, CFG[63:0] = 5555555555555555 (hex) for all devices for CYNSE10512A. CFG[31:0] = 55555555
• The device receiving all the LHO signals from the other devices is considered the last device.
• All the shared signals showing tri-stated condition (“z”) indicate that, that particular device is not driving the shared signals.
• Comparing the hardware diagrams shown in Figure 6-10 and Figure 6-43, enabling MultiSearch does not mean that a board
• Four cycles from the Search command, each of the devices knows the outcome internal to it for that operation.
• On the fifth cycle, the devices arbitrate for a winner within a block (a “block” is defined as less than or equal to eight devices
• On the sixth cycle after the Search command, the blocks (of devices) resolve the winning block through the BHI[2:0] and
(hex) for all devices for CYNSE10256A, and CFG[15:0] = 5555 (hex) for all devices for CYNSE10128A. For Enhanced Mode,
NES in each block for all devices should be set to “01” to create 144-bit table.
The shared signals are not three-stated in a real life because other devices will be driving them.
layout change is required. The LHO_1_L and LHI_1_L share the same pin with the Full In and Full Out signals, which are not
shown in Figure 6-10. Cascading multiple devices together still allow the user to configure the devices through software to
perform single-search or MultiSearch operations without any board change.
resolving the winner within them using the LHI[6:0] and LHO[1:0] signalling mechanism).
BHO[2:0] signalling mechanism. The winning device within the winning block is the global winning device for a Search operation.
Search Number
144-bit Single Search for Cascade Up to 31 Devices
Block 0
Block 1
Block 2
Block 3
Miss
Miss
Miss
Hit
1
CONFIDENTIAL
Miss
Miss
Hit
Hit
2
Miss
Miss
Hit
Hit
3
CYNSE10512A
CYNSE10256A
CYNSE10128A
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Miss
Miss
Miss
Miss
4