72211L15J IDT, 72211L15J Datasheet

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72211L15J

Manufacturer Part Number
72211L15J
Description
FIFO
Manufacturer
IDT
Datasheet

Specifications of 72211L15J

Part # Aliases
IDT72211L15J
©
FUNCTIONAL BLOCK DIAGRAM
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. The SyncFIFO is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
FEATURES:
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2008
to any depth
Empty+7, and Full-7, respectively
32-pin Thin Quad Flat Pack (TQFP)
72220/72230/72240 data sheet
64 x 9-bit organization (IDT72421)
256 x 9-bit organization (IDT72201)
512 x 9-bit organization (IDT72211)
1,024 x 9-bit organization (IDT72221)
2,048 x 9-bit organization (IDT72231)
4,096 x 9-bit organization (IDT72241)
8,192 x 9-bit organization (IDT72251)
10 ns read/write cycle time
Read and Write Clocks can be independent
Dual-Ported zero fall-through time architecture
Empty and Full Flags signal FIFO status
Programmable Almost-Empty and Almost-Full flags can be set
Programmable Almost-Empty and Almost-Full flags default to
Output enable puts output data bus in high-impedance state
Advanced submicron CMOS technology
Available in the 32-pin plastic leaded chip carrier (PLCC) and
For through-hole product please see the IDT72420/72200/72210/
Industrial temperature range (–40° ° ° ° ° C to +85° ° ° ° ° C) is available
Green parts available, see ordering information
Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
WRITE CONTROL
WCLK
WRITE POINTER
RESET LOGIC
WEN1
LOGIC
RS
WEN2
CMOS SyncFIFO
64 x 9, 256 x 9, 512 x 9,
1,024 x 9, 2,048 x 9,
4,096 x 9 and 8,192 x 9
OE
OUTPUT REGISTER
2,048 x 9, 4,096 x 9,
INPUT REGISTER
512 x 9, 1,024 x 9,
64 x 9, 256 x 9,
RAM ARRAY
8,192 x 9
D
Q
0
0
- D
- Q
8
8
1
DESCRIPTION:
are very high-speed, low-power First-In, First-Out (FIFO) memories with
clocked read and write controls. These devices have a 64, 256, 512, 1,024,
2,048, 4,096, and 8,192 x 9-bit memory array, respectively. These FIFOs are
applicable for a wide variety of data buffering needs such as graphics, local area
networks and interprocessor communication.
by a free-running clock (WCLK), and two write enable pins (WEN1, WEN2).
Data is written into the Synchronous FIFO on every rising clock edge when the
write enable pins are asserted. The output port is controlled by another clock
pin (RCLK) and two read enable pins (REN1, REN2). The Read Clock can
be tied to the Write Clock for single clock operation or the two clocks can run
asynchronous of one another for dual-clock operation. An output enable pin
(OE) is provided on the read port for three-state control of the output.
Two programmable flags, Almost-Empty (PAE) and Almost-Full (PAF), are
provided for improved system control. The programmable flags default to
Empty+7 and Full-7 for PAE and PAF, respectively. The programmable flag
offset loading is controlled by a simple state machine and is initiated by asserting
the load pin (LD).
technology.
These FIFOs have 9-bit input and output ports. The input port is controlled
The Synchronous FIFOs have two fixed flags, Empty (EF) and Full (FF).
These FIFOs are fabricated using IDT’s high-speed submicron CMOS
The IDT72421/72201/72211/72221/72231/72241/72251 SyncFIFO™
OFFSET REGISTER
READ POINTER
READ CONTROL
RCLK
LOGIC
LOGIC
FLAG
REN1
REN2
LD
IDT72421, IDT72201
IDT72231, IDT72241
IDT72211, IDT72221
2655 drw01
OCTOBER 2008
EF
PAE
PAF
FF
IDT72251
DSC-2655/5

Related parts for 72211L15J

72211L15J Summary of contents

Page 1

... LOGIC WRITE POINTER RESET LOGIC RS IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. The SyncFIFO is a registered trademark of Integrated Device Technology, Inc. COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES © 2008 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. ...

Page 2

... IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™ 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9 PIN CONFIGURATION INDEX PAF 3 4 PAE GND 5 REN1 6 RCLK 7 REN2 TQFP (PR32-1, order code: PF) ...

Page 3

... IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™ 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9 ABSOLUTE MAXIMUM RATINGS Symbol Rating Com'l & Ind'l V Terminal Voltage with –0.5 to +7.0 TERM Respect to GND T Storage Temperature –55 to +125 STG I DC Output Current ...

Page 4

... Almost-Empty Flag & Programmable Almost-Full Flag NOTES: 1. Industrial temperature range product for the 15ns and 25ns speed grades are available as standard product. 2. Pulse widths less than minimum values are not allowed. 3. Values guaranteed by design, not currently tested. AC TEST CONDITIONS In Pulse Levels ...

Page 5

... Write Enable 2/Load (WEN2/LD) are ignored when the FIFO is full. The FIFO is configured to have programmable flags when the Write Enable 2/Load (WEN2/LD) is set LOW at Reset (RS=LOW). The IDT72421/72201/ 72211/72221/72231/72241/72251 devices contain four 8-bit offset registers which can be loaded with data on the inputs, or read on the outputs. See Figure 3 for details of the size of the registers and the default values ...

Page 6

... Full Offset (LSB) Default Value 007H 8 3 (MSB) 0000 Figure 3. Offset Register Location and Default Values 6 COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES IDT72201 - 256 x 9-BIT 7 0 Empty Offset (LSB) Reg. Default Value 007H Full Offset (LSB) Reg. Default Value 007H 0 IDT72221 - 1,024 x 9-BIT ...

Page 7

... The Full Flag (FF) will go LOW, inhibiting further write operation, when the device is full reads are performed after Reset (RS), the Full Flag (FF) will go LOW after 64 writes for the IDT72421, 256 writes for the IDT72201, 512 writes for the IDT72211, 1,024 writes for the IDT72221, 2,048 writes for the IDT72231, 4,096 writes for the IDT72241, and 8,192 writes for the IDT72251 ...

Page 8

... IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™ 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 REN1, REN2 WEN1 (1) WEN2/LD EF, PAE FF, PAF NOTES: 1. Holding WEN2/LD HIGH during reset will make the pin act as a second write enable pin. Holding WEN2/LD LOW during reset will make the pin act as a load enable for the programmable flag offset registers ...

Page 9

... IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™ 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9 RCLK t ENS t ENH REN1, REN2 OLZ OE WCLK WEN1 WEN2 NOTE: is the minimum time between a rising WCLK edge and a rising RCLK edge for EF to change during the current clock cycle. If the time between the rising edge of RCLK 1 ...

Page 10

... IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™ 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 WRITE WCLK t SKEW1 WEN1 WEN2 (If Applicable) RCLK t ENH t ENS REN1, REN2 OE LOW DATA IN OUTPUT REGISTER 0 8 NOTE: 1. Only one of the two write enable inputs, WEN1 or WEN2, needs to go inactive to inhibit writes to the FIFO. ...

Page 11

... NOTES PAF offset . 2. 64-m words in FIFO for IDT72421, 256-m words for IDT72201, 512-m words for IDT72211, 1,024-m words for IDT72221, 2,048-m words for IDT72231, 4,096-m words for IDT72241, and 8,192-m words for IDT72251. is the minimum time between a rising RCLK edge and a rising WCLK edge for PAF to change during that clock cycle. If the time between the rising edge of RCLK and 3 ...

Page 12

... IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™ 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 CLK t t CLKH CLKL WCLK t ENS LD t ENS WEN1 PAE OFFSET (LSB) t CLK t t CLKH CLKL RCLK t ENS LD t ENS ...

Page 13

... WIDTH EXPANSION CONFIGURATION Word width may be increased simply by connecting the corresponding input controls signals of multiple devices. A composite flag should be created for each of the endpoint status flags (EF and FF). The partial status flags (AE and AF) can be detected from any one device ...

Page 14

... SyncFIFO 72221 2,048 x 9 ⎯ SyncFIFO 72231 4,096 x 9 ⎯ SyncFIFO 72241 8,192 x 9 ⎯ SyncFIFO 72251 for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 14 Clock Cycle Time (t ) CLK Speed in Nanoseconds 2655 drw18 for Tech Support: 408-360-1753 email: FIFOhelp@idt.com ...

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