CYNSE10512A-133FGC Cypress Semiconductor Corp, CYNSE10512A-133FGC Datasheet - Page 80

• 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
6.5.5
The hardware diagram of the Search subsystem of up to eight devices is shown in Figure 6-10. The MultiSearch Enable (MSE)
bit in the Command Register must be set LOW to perform single-search. The following are the rest of the parameters programmed
into the eight devices.
For a single-device configuration, all parameters will be the same as device 7. BHI[2:0] and LHI[6:0] should be tied to ground.
Notes:
The following three figures show the response of three of the eight devices having a hit at different time according to a Hit/Miss
assumption shown below in Table 6-11. For these timing diagrams, three 576-bit searches are performed sequentially. Figure 6-
27 shows the timing diagram for a Search command in the 576-bit-configured table of eight devices for device number 0. Figure 6-
28 and Figure 6-29 shows the same for device number 1 and number 7 (the last device in this specific table) respectively.
Table 6-11. Hit/Miss Assumptions
• First seven devices (devices 0–6): TLSZ = 01 (binary), HLAT = 000 (binary), LRAM = 0 (binary), and LDEV = 0 (binary).
• Eighth device (device 7): TLSZ = 01 (binary), HLAT = 000 (binary), LRAM = 1 (binary), and LDEV = 1 (binary).
• 576-bit search is only available in the Enhanced Mode, not in the Non-Enhanced Mode. NES should be set to “11” (binary) in
• All eight devices must be programmed with the same values for TLSZ and HLAT. Only the last device in the table (device
• The device receiving all the LHO signals from the other devices is considered the last device.
• All the shared signals in the following timing diagrams showing tri-stated condition (“z”) indicate that, that particular device is
• Comparing the hardware diagrams shown in Figure 6-10 and Figure 6-43, enabling MultiSearch does not mean that a board
all blocks of all devices to create a 576-bit table.
number 7 in this case) must be programmed with LRAM = 1 (binary) and LDEV = 1 (binary). All other upstream devices
(devices 0 through 6 in this case) must be programmed with LRAM = 0 (binary) and LDEV = 0 (binary).
not driving the shared signals. 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.
Search Number
576-bit Single Search for One Device or Cascade up to Eight Devices
Devices 2–6
Device 0
Device 1
Device 7
CONFIDENTIAL
Miss
Miss
Miss
Hit
1
Miss
Miss
Miss
Hit
2
CYNSE10512A
CYNSE10256A
CYNSE10128A
Miss
Miss
Miss
Miss
3
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