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Integrated Device Technology Electronic Components Datasheet

IDT723674 Datasheet

(IDT7236x4) CMOS SyncBiFIFO

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IDT723674 pdf
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CMOS SyncBiFIFOTM WITH BUS-MATCHING
2,048 x 36 x 2
4,096 x 36 x 2
8,192 x 36 x 2
IDT723654
IDT723664
IDT723674
FEATURES
Memory storage capacity:
IDT723654 – 2,048 x 36 x 2
IDT723664 – 4,096 x 36 x 2
IDT723674 – 8,192 x 36 x 2
Clock frequencies up to 83 MHz (8ns access time)
Two independent clocked FIFOs buffering data in opposite
directions
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)
Programmable Almost-Empty and Almost-Full flags; each has five
default offsets (8, 16, 64, 256 and 1,024 )
Serial or parallel programming of partial flags
Port B bus sizing of 36 bits (long word), 18 bits (word) and 9 bits
(byte)
Big- or Little-Endian format for word and byte bus sizes
Retransmit Capability
Master Reset clears data and configures FIFO, Partial Reset
clears data but retains configuration settings
Mailbox bypass registers for each FIFO
Free-running CLKA and CLKB may be asynchronous or coincident
(simultaneous reading and writing of data on a single clock edge
is permitted)
Auto power down minimizes power dissipation
Available in space saving 128-pin Thin Quad Flatpack (TQFP)
Pin compatible to the lower density parts, IDT723624/723634/723644
Industrial temperature range (–40°C to +85°C) is available
FUNCTIONAL BLOCK DIAGRAM
CLKA
CSA
W/RA
ENA
MBA
MRS1
PRS1
FFA/IRA
AFA
FS2
FS0/SD
FS1/SEN
A0-A35
EFA/ORA
AEA
Port-A
Control
Logic
FIFO1,
Mail1
Reset
Logic
36
RT1
RTM
RT2
36
FIFO1 and
FIFO2
Retransmit
Logic
MBF2
Mail 1
Register
36
RAM ARRAY
2,048 x 36
36
4,096 x 36
8,192 x 36
FIFO1
Write
Pointer
Read
Pointer
Status Flag
Logic
Programmable Flag
Offset Registers
Timing
Mode
13
FIFO2
Status Flag
Logic
Read
Pointer
Write
Pointer
RAM ARRAY
36 2,048 x 36
4,096 x 36
8,192 x 36
Mail 2
Register
36
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. 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.
MBF1
36
EFB/ORB
AEB
36
FIFO2,
Mail2
Reset
Logic
FWFT
B0-B35
FFB/IRB
AFB
MRS2
PRS2
Port-B
Control
Logic
CLKB
CSB
W/RB
ENB
MBB
BE
BM
SIZE
5608 drw01
NOVEMBER 2003
DSC-5608/5


Integrated Device Technology Electronic Components Datasheet

IDT723674 Datasheet

(IDT7236x4) CMOS SyncBiFIFO

No Preview Available !

IDT723674 pdf
IDT723654/723664/723674 CMOS SyncBiFIFOTM WITH BUS-MATCHING
2,048 x 36 x 2, 4,096 x 36 x 2 and 8,192 x 36 x 2
COMMERCIALTEMPERATURERANGE
DESCRIPTION
The IDT723654/723664/723674 is a monolithic, high-speed, low-power,
CMOS bidirectional synchronous (clocked) FIFO memory which supports
clockfrequenciesupto83MHzandhasreadaccesstimesasfastas8ns. Two
independent 2,048/4,096/8,192 x 36 dual-port SRAM FIFOs on board each
chip buffer data in opposite directions. FIFO data on Port B can be input and
output in 36-bit, 18-bit, or 9-bit formats with a choice of Big- or Little-Endian
configurations.
These devices are a synchronous (clocked) FIFO, meaning each port
employs a synchronous interface. All data transfers through a port are gated
totheLOW-to-HIGHtransitionofaportclockbyenablesignals. Theclocksfor
each port are independent of one another and can be asynchronous or
coincident. The enables for each port are arranged to provide a simple
bidirectional interface between microprocessors and/or buses with synchro-
nous control.
PIN CONFIGURATION
INDEX
W/RA
ENA
CLKA
GND
A35
A34
A33
A32
Vcc
A31
A30
GND
A29
A28
A27
A26
A25
A24
A23
BE/FWFT
GND
A22
Vcc
A21
A20
A19
A18
GND
A17
A16
A15
A14
A13
Vcc
A12
GND
A11
A10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
TQFP (PK128-1, order code: PF)
TOP VIEW
2
102 CLKB
101 PRS2/RT2
100 Vcc
99 B35
98 B34
97 B33
96 B32
95 RTM
94 GND
93 B31
92 B30
91 B29
90 B28
89 B27
88 B26
87 Vcc
86 B25
85 B24
84 BM
83 GND
82 B23
81 B22
80 B21
79 B20
78 B19
77 B18
76 GND
75 B17
74 B16
73 SIZE
72 Vcc
71 B15
70 B14
69 B13
68 B12
67 GND
66 B11
65 B10
5608 drw02


Part Number IDT723674
Description (IDT7236x4) CMOS SyncBiFIFO
Maker IDT
Total Page 30 Pages
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