3.3 VOLT CMOS SyncFIFOTM
64 x 36
IDT72V3611
• Available in 132-pin Plastic Quad Flatpack (PQF) or space-saving
120-pin Thin Quad Flatpack (PF)
FEATURES:
• 64 x 36 storage capacity
•
•
Industrial temperature range (–40°C to +85°C) is available
Pin and functionally compatible version of the 5V operating
IDT723611
• Supports clock frequencies up to 67MHz
• Fast access times of 10ns
• Free-running CLKA and CLKB may be asynchronous or
coincident (permits simultaneous reading and writing of
data on a single clock edge)
•
Green parts available, see ordering information
DESCRIPTION:
• Synchronous data buffering from Port A to Port B
• Mailbox bypass register in each direction
• Programmable Almost-Full (AF) and Almost-Empty (AE) flags
• Microprocessor Interface Control Logic
The IDT72V3611 is a pin and functionally compatible version of the
IDT723611, designed to run off a 3.3V supply for exceptionally low power
consumption. This device is a monolithic, high-speed, low-power, CMOS
• Full Flag (FF) and Almost-Full (AF) flags synchronized by CLKA Synchronous(clocked)FIFOmemorywhichsupportsclockfrequenciesupto
• Empty Flag (EF) and Almost-Empty (AE) flags synchronized by
CLKB
• Passive parity checking on each Port
• Parity Generation can be selected for each Port
67MHzandhasreadaccesstimesasfastas10ns.The64 x 36dual-portFIFO
buffers datafromPortAtoPortB.TheFIFOoperates inIDTStandardmode
andhasflagstoindicateemptyandfullconditions,andtwoprogrammableflags,
Almost-Full(AF)andAlmost-Empty(AE),toindicatewhenaselectednumber
FUNCTIONAL BLOCK DIAGRAM
CLKA
CSA
W/RA
ENA
Port-A
Control
Logic
MBA
MBF1
PEFB
Parity
Gen/Check
Mail 1
Register
PGB
RST
Reset
Logic
ODD/
EVEN
RAM
ARRAY
64 x 36
36
36
A
0
- A35
Read
Pointer
Write
Pointer
B0 - B35
FF
AF
Status Flag
JUNE 7 , 2005
EF
AE
Logic
FIFO
Programmable
Flag Offset
Registers
FS
0
1
FS
PGA
Mail 2
Register
Parity
Gen/Check
CLKB
CSB
W/RB
ENB
MBB
Port-B
Control
Logic
PEFA
MBF2
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IDTandtheIDTlogoareregisteredtrademarksofIntegratedDeviceTechnology,Inc.SyncFIFOisatrademarkofIntegratedDeviceTechnology,Inc.
FEBRUARY 2009
COMMERCIAL TEMPERATURE RANGE
1
©2009 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
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