IDT72V3682 Datasheet, PDF (1/29 Pages) Integrated Device Technology – 3.3 VOLT CMOS SyncBiFIFO-TM

3.3 VOLT CMOS SyncBiFIFO^TM
16,384 x 36 x 2
32,768 x 36 x 2
65,536 x 36 x 2
IDT72V3682
IDT72V3692
IDT72V36102
FEATURES
• Memory storage capacity:
IDT72V3682 – 16,384 x 36 x 2
IDT72V3692 – 32,768 x 36 x 2
IDT72V36102 – 65,536 x 36 x 2
• Supports clock frequencies up to 100MHz
• Fast access times of 6.5ns
• Free-running CLKA and CLKB may be asynchronous or coincident
(simultaneous reading and writing of data on a single clock edge
is permitted)
• Two independent clocked FIFOs buffering data in opposite direc-
tions
• Mailbox bypass register for each FIFO
• Programmable Almost-Full and Almost-Empty flags
• Microprocessor Interface Control Logic
• FFA/IRA, EFA/ORA, AEA, and AFA flags synchronized by CLKA
• FFB/IRB, EFB/ORB, AEB, and AFB flags synchronized by CLKB
• Select IDT Standard timing (using EFA, EFB, FFA and FFB flags
functions) or First Word Fall Through timing (using ORA, ORB, IRA
and IRB flag functions)
• Available in space-saving 120-pin Thin Quad Flatpack (TQFP)
• Pin compatible to the lower density parts, IDT72V3622/72V3632/
72V3642/72V3652/72V3662/72V3672
• Industrial temperature range (–40°C to +85°C) is available
FUNCTIONAL BLOCK DIAGRAM
CLKA
CSA
W/RA
ENA
MBA
Port-A
Control
Logic
RST1
FIFO1,
Mail1
Reset
Logic
36
FFA/IRA
AFA
Mail 1
Register
RAM
ARRAY
16,384 x 36
32,768 x 36
65,536 x 36
Write
Pointer
Read
Pointer
FIFO 1
Status Flag
Logic
MBF1
36
EFB/ORB
AEB
FS0
FS1
A0 - A35
EFA/ORA
AEA
MBF2
Programmable Flag Timing
Offset Registers
Mode
16
FIFO 2
Status Flag
Logic
Read
Write
36
Pointer
Pointer
RAM
ARRAY
16,384 x 36
32,768 x 36
65,536 x 36
Mail 2
Register
FWFT
B0 - B35
FFB/IRB
AFB
36
FIFO2,
Mail2
Reset
Logic
RST2
Port-B
Control
Logic
CLKB
CSB
W/RB
ENB
MBB
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IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. The SyncBiFIFO is a trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
1
 2003 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
NOVEMBER 2003
DSC-4679/3