Industrial temperature range (–40°C to +85°C) is available
°
°
Green parts available, see ordering information
DESCRIPTION:
The IDT72V801/72V811/72V821/72V831/72V841/72V851/72V851 are
dual synchronous (clocked) FIFOs. The device is functionally equivalent to
two IDT72V201/72V211/72V221/72V231/72V241/72V251 FIFOs in a single
package with all associated control, data, and flag lines assigned to separate
pins.
Each of the two FIFOs (designated FIFO A and FIFO B) contained in the
IDT72V801/72V811/72V821/72V831/72V841/72V851 has a 9-bit input data
port (DA0 - DA8, DB0 - DB8) and a 9-bit output data port (QA0 - QA8,
QB0 - QB8). Each input port is controlled by a free-running clock (WCLKA,
WCLKB), and two Write Enable pins (WENA1, WENA2,
WENB1,
WENB2).
Data is written into each of the two arrays on every rising clock edge of the Write
Clock (WCLKA, WCLKB) when the appropriate Write Enable pins are
asserted.
The output port of each FIFO bank is controlled by its associated clock pin
(RCLKA, RCLKB) and two Read Enable pins (RENA1,
RENA2, RENB1,
RENB2).
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 (OEA,
OEB)
is provided on the read port of each FIFO
for three-state output control.
Each of the two FIFOs has two fixed flags, Empty (EFA,
EFB)
and Full (FFA,
FFB).
Two programmable flags, Almost-Empty (PAEA,
PAEB)
and Almost-Full
(PAFA,
PAFB),
are provided for each FIFO bank to improve memory utilization.
If not programmed, the programmable flags default to Empty+7 for
PAEA
and
PAEB,
and Full-7 for
PAFA
and
PAFB.
The IDT72V801/72V811/72V821/72V831/72V841/72V851 architecture
lends itself to many flexible configurations such as:
• 2-level priority data buffering
• Bidirectional operation
• Width expansion
• Depth expansion
This FIFO is fabricated using IDT's high-performance submicron CMOS
technology.
FUNCTIONAL BLOCK DIAGRAM
WCLKB
EFA
PAEA
WENB1
PAFA
LDA
WENB2
FFA
OFFSET REGISTER
FLAG
LOGIC
RAM ARRAY
256 x 9, 512 x 9,
1,024 x 9, 2,048 x 9,
4,096 x 9, 8,192 x 9
WRITE CONTROL
LOGIC
RAM ARRAY
256 x 9, 512 x 9,
1,024 x 9, 2,048 x 9,
4,096 x 9, 8,192 x 9
WCLKA
WENA1
WENA2
DA
0
- DA
8
DB
0
- DB
8
LDB
INPUT REGISTER
WRITE CONTROL
LOGIC
INPUT REGISTER
OFFSET REGISTER
FLAG
LOGIC
EFB
PAEB
PAFB
FFB
WRITE POINTER
READ POINTER
READ CONTROL
LOGIC
WRITE POINTER
READ POINTER
READ CONTROL
LOGIC
OUTPUT REGISTER
RESET LOGIC
RESET LOGIC
OUTPUT REGISTER
RSA
OEA
QA
0
- QA
8
RCLKA
RENA1
RENA2
RSB
OEB
QB
0
- QB
8
RCLKB
RENB1
RENB2
4093 drw 01
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc. The TeraSync FIFO is a trademark of Integrated Device Technology, Inc.
GD32L233C-START Development Board Study Notes ( IV )
GD32L23C-START development board demo example
Open GD’s routine and you will feel a sense of familiarity.
int main(void)
{
systick_config();//Confi...
[October 17] Step by step to develop the most concise bootloader Topic: Step by step to develop the most concise bootloader Organizer: MaxWit Devil Training Camp, g-bios Open Source Community Speaker:...
[font=微软雅黑][size=5]I am going to make a remote control robot, which will be used in restaurant services. There are four paths corresponding to four tables, which will be completed by the robot followi...
[i=s]This post was last edited by qwqwqw2088 on 2014-6-19 10:45[/i] [color=#666666]Edited by Gao The LED light broom designed by Yuan and others is equipped with an LED light, batteries, circuits and ...
Does anyone have any good Bluetooth controls that can search, pair and transmit? Good and stable, and can be purchased with cash. You can also send your answers to my email address wind_heart@21cn.com...
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
1 Introduction
A wide variety of communication cables and control cables are widely used in various instruments and control equipment. Whether the cable is well-conducted and
whether
th...[Details]
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
Due to the significant increase in electronic devices in automotive and industrial applications, the automotive and industrial markets continue to play an important role in China's electronics in...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[Details]
1 Introduction
Intelligent control instruments are one of the most commonly used controllers in industrial control. They are mainly aimed at a specific parameter (such as pressure, tempera...[Details]
MediaTek (2454) announced the acquisition of F-MStar (3697) and attracted the attention of IC design industry. This morning, Gartner Semiconductor Industry Research Director Hong Cenwei analyzed ...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[Details]
Continuity test
A variety of devices need to be checked for continuity, including cable assemblies, printed circuit boards, and connectors to ensure that these components have the expected contin...[Details]
With the widespread application of new services and technologies in the communications industry, the scale and capacity of operators' network construction are getting larger and larger, and the ris...[Details]
Introduction
Nowadays, people pay more and more attention to the security alarm system, and people have higher and higher requirements for the functions and performance of the alarm. This paper prop...[Details]
Introduction
X1226 has the functions of clock and calendar. The clock relies on hour, minute and second registers to track, and the calendar relies on date, week, month and year registers to tr...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
GD32 MCU
京公网安备 11010802033920号
EEWORLD
