Questions tagged [interface]

An interface defines clear boundaries and communication/interconnection between systems.

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13 views

How to connect ADF4153 modem oscillator serially with PC without using SDP board?

I tried to connect ADF4153 modem oscillator with PC using STC15W4K56S4 that I bought from Aliexpress. My PC is reading the modem but the program is not, so I am trying to connect the ADF4153 ...
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1answer
386 views

Interfacing ADS1115 with FPGA

I'm trying to interface ADS1115 to MAX10 FPGA. I've managed to start reading from the ADS1115... but I'm facing another problem as of now... even when i connect A0 to 3.3v I'm reading junk i.e ...
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1answer
96 views

What exactly do D+ and D- on a USB connection do? [closed]

Of the four pins on the usb I know the power and the ground pins are used to supply power to a USB device. But the other two ...
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1answer
197 views

Asynchronous FIFO in clock domain crossing

Clock domain crossing issue can be solved by using asynchronus FIFO with input frequency f1 is of the source domain and f2 is of the destination frequency. If the data is sent in bursts, depth can be ...
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1answer
180 views

which interface to use TBI, GMII or MII? (FPGA)

I am working with the SoC FPGA Smartfusion2 M2S010-MKR-KIT. It is intended to exchange some data between the SoC and the PC. For that reason, I aim to use Ethernet. As far as I understood, in order ...
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1answer
47 views

best practices in detecting relay contacts status

Currently i'm experimenting with 12VDC energy meters latching relays and at least for me the feature of detecting status of contacts ( required by some clients ) which is built in as in the diagram ...
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4answers
5k views

Meandering traces necessary for 24-Bit parallel RGB LCD interface?

I am working on a project that interfaces an Atmel SAMA5D3 MCU with a LCD TFT display. The interface between both is 24-Bit parallel RGB with HSYNC and VSYNC signals. The resolution of the display is ...
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1answer
209 views

What kind of communication protocol is this?

I'm trying to reverse engineer the communication between two modules, a master and a slave, but I couldn't figure out the used protocol. All of the signs use 5V. The blue sign's frequency is 400 kHz. ...
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293 views

MCP25625 LoopBack Mode Reponse

If anyone has worked with the CAN MCP25625 chip in the past I would like to know if in the loop back mode if we load and send data on the TXB0 buffer are we supposed to receive a RXB0 buffer ready and ...
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9answers
53k views

Is there any bidirectional 5v-3.3v level shifter?

Is there any IC that interfaces any 3.3V Input/Output to 5V Output/Input? I need it primarily for an Arduino Due but if there any bidirectional IC that works like that it would be great. Some people ...
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1answer
81 views

Display Driver for a SHARP LS020B1DD01D LCD [closed]

I am working on a personal project that will feature an LCD panel and push buttons to control the graphical user interface. For the LCD I would like to use the SHARP LS020B1DD01D (for the ...
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2answers
565 views

simple GSM SIM modem

I'd like to build a prototype of simplest possible GSM device - a simple modem with SIM holder, capable of logging on to the SIM's provider network and nothing else. It's meant to be used as a GSM ...
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2answers
74 views

What is “high voltage programming”, and why do some MCUs use it?

This article on sub-10 cent MCUs mentions that many of them use a high voltage programming interface. What is this, and why would a product use it over a "regular" 5V or 3.3V programming interface?
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1answer
765 views

Combining speaker outputs to one secondary amplifier

Background I have a Denon 5.1 av receiver and have bought some new speakers. The only restriction (from my wife) was on size so I have managed to get hold of a set of speakers for the Sony DAV-IS10 (...
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2answers
671 views

logic triggerable strobe light circuit

Does anyone have a circuit that will trigger a strobe light to flash in response to a TTL logic signal? Specifically, if I have a strobe circuit capable of flashing 1000 times per second, it seems ...
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1answer
69 views

Design an interfacing circuit/address decoding circuit to interface one 4KB EPROM and two 2KB R/W memory for 8085 microprocessor?

I don't know if this question is a good question to get answers or not but I am trying to honestly explain my situation. I am studying 8085 microprocessor, so I am stumbled upon address decoding ...
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57 views

Wishbone B4 rule 3.55: Is this for a special case?

Rule 3.55 of Wishbone B.4 states: "MASTER interfaces MUST be designed to operate normally when the SLAVE interface holds [ACK_I] in the asserted state." I read this rule together with permission 3.35,...
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1answer
708 views

Why are contacts missing on some of these M.2 modules?

I want to replace a preinstalled Qualcomm Atheros WiFi/Bluetooth M.2 2230 card on my motherboard (ASUS Maximus VIII Impact) with another that has better driver support. This is what the card I want to ...
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19 views

Interface broadcast phone-in console with GSM telephone

I have a broadcast phone-in console with RJ-11 telephone inputs. Since landline telephone line is more noisy and prone to failure, I want to interface a GSM based landline ( with no RJ 11 loop-through ...
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21 views

How to use SPI serial interface with ATSAMD21G18?

Like the title suggests, I have a ATSAMD21G18 microcontroller that I want to interface with a LTC6803-4 chip, but I'm not sure how to set up the SPI bus on the microcontroller, and the datasheet ...
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2answers
569 views

Why do we need sync pulses in digital (LCD driving) context?

I am studying how to drive LCD TFT display with the microcontroller (STM32F746). The manual mentions that I have to set up timings for HSYNC, VSYNC, VBP (Vertical Back Porch), VFP (Vertical Front ...
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1answer
30 views

Is this way of sizing the load correct for this PNP output sensor?

A proximity sensor has the following specs: It is PNP output and the specs say 100mA at 30VDC. Does that mean the resistor/load between the sensor's PNP output and the GND should be more than 30V/...
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4answers
2k views

Is using the CH340G on a commercial product a horrible idea? [closed]

I'm developing a niche product that will be produced at a fairly low volume (low hundreds). I'm using an Atmega uC, and one of the requirements is the ability to be field-flashable by the user. My ...
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1answer
1k views

Verilog interfacing with C#

Right now, I am taking a course on Verilog HDL, however, our instructor gave us a machine problem wherein we are required to implement a program using verilog while having C# as our main gui. The ...
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58 views

What does a wireless chip do?

This is a basic question but it taken my time for a while since I do not have enough knowledge in this area. Recently, I am investigating about functionality of a wifi and bluetooth chip ...
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1answer
73 views

RS485 full duplex to Adapter with A and B ports

I need to configure a sensor (Thies 3D Sonic Anemometer, Manual: https://www.biral.com/wp-content/uploads/2015/01/4.383x.xx_.xxxUS3D.pdf) via my computer, it has RS485 full duplex and half-duplex ...
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1answer
380 views

transmitting 3.3v/5v signal over a 2 meters cable

Sorry to send homologous question. I have looked through this site, but for my limitation on electric knowledge, I have to ask still. I'm trying to build a DIY project based on arduino and other ...
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2answers
218 views

Why are most parallel interfaces half-duplex and serial full-duplex? [closed]

I know what is difference between parallel and serial interface. I know also what does it mean half/full duplex. However, I don't know why most parallel interfaces are half-duplex, and most of serial ...
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25 views

Smart Charger (Tenergy TB-6AC) UART/USB interface

I have an old smart charger (Tenergy TB-6AC) which boasts the ability to interface with my computer. Upon further research, I have found that the software is no longer supported and no where to be ...
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93 views

Line level audio output from headphones level output

I am new to analog audio interface design. I am trying to get a line level output from a amplified headphones level output. I want both of the output to work at the same time in order for the user to ...
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1answer
99 views

Where to begin with programming an audio interface driver?

I'm designing my own mic/line preamp (the analog portions) and would like to have it interface with a computer in a send-return fashion as well (like any typical audio interface). I've noticed that ...
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1answer
49 views

I/O expanders- CAN & I2C

Currently in my system we use 16 I/O expanders with I2C interface. I want to change it to CAN interface. Which is the best possible way without compromising the cost? I tried searching for 16I/O ...
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38 views

How to spec a system to replay acquired data

Hope all of this makes sense... I record torque applied to bolts as part of an evaluation process of new materials. I have a rotary encoder, it pulses at 100ppr. My torque wrench gearing means 1 turn ...
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93 views

Meeting Setup/Hold Time according to time analysis

I am trying to interface an IC with an FPGA. Both the IC & FPGA run at 66 MHz with no clock skew between them and the propagation delay of the data lines is negligible, since the length of the PCB ...
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1answer
100 views

Supplying TTL Signal via USB

I have two pieces of hardware I'd like to interface with via USB. The first are 2002 Series Actuated Valves and the second is a Mass-Flo Controller for regulating gas exchange. To my (admittedly ...
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0answers
64 views

What are these programming terminals for a 2 kW power supply?

Does anyone recognize the programming terminals on the real panel of this power supply? I would like to get the 50 amps out. It is an ATE1 made by Redfern radio, it is an old army surplus. Going in ...
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90 views

Automotive 12V Analog and Digital input coupling and isolation

There are numerous questions on SE about classical automotive signal adaptation to microcontrollers. The circuit below uses a few common techniques for analog signal interfacing when a ...
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2answers
216 views

I2C Single Master Multiple Slave

I have a one I2C master and 14 I2C slave devices connected on the bus. I want to clarify the order of things that happen on the I2C bus. Let say the master send an ADDRESS, then all the slave ...
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1answer
58 views

RS485 Rx signal connected with two drivers

I wonder why is RS485_Rx is connected with two line drivers while RS485_Tx is connected with only one line driver. Is this some mistake in the schematics or is it some standard circuit for RS485?
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2answers
3k views

Interface/pinout of a smartphone camera module?

I am wondering where, if any, I can get information regarding interfacing/connecting with a smartphone camera module. For example, this camera module is a replacement for SGS4 and I can clearly see ...
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1answer
1k views

Running network cable near X-Ray equipment

My mother runs a small veterinary clinic. She is getting a new X-Ray machine that will need a network connection to send digital copies of the X-Ray to the server. I will be installing a wall plate ...
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2answers
8k views

LCD 16 x 2 1602A Interfacing

I have bought a 16 x 2 LCD which I want to interface to a ATMEGA 324 microcontroller. The problem is that the vendor didn't give me a good enough datasheet. It does not contain any information ...
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114 views

Unexplained Data Enable Pin

Looking at This datasheet for the LSM9DS1TR 9-axis IMU, there is a pin labeled DEN_A/G with the description "Accelerometer and gyroscope data enable" on page 11. I can find no further explanation ...
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2answers
112 views

Current drawn by microcontroller

How to estimate current drawn by microcontroller(on the ADC port) when interfaced to a module/IC/sensor theoretically? MCU manual: https://nxp.com/docs/en/data-sheet/LPC2131_32_34_36_38.pdf
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1answer
106 views

How can I Access Tiger Sharc DSP processor through host pc?

I am working on designing of a test board which involves both FPGA(Xilinx- Kintex 7) and DSP(Tiger Sharc) based signal processing. Now the end user wants to access the DSP processor programming ...
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1answer
355 views

Tektronix TBS 2000 oscilloscope to Python

I am a total beginner when it comes to communicating to your electronic devices using python. I installed PyVISA, Open Choice Talker Listner (Tektronix), a few other items. I was able to send basic ...
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1answer
389 views

logic level conversions for opto-isolators in digital input acquisition

This isn't my usual job, I'm not an EE, but I want to give it shot... This question concerns developing an interface board to connect a device (DUT) to a test system in a manufacturing scenario. ...
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1answer
559 views

What's the best internal SoC bus?

As far as I know there are two major buses - AMBA/AXI and Wishbone. While AMBA/AXI has proven itself in almost every ARM chip, I didn't find some numbers for Wishbone. Are there any benchmarks or real ...
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1answer
203 views

Can I use I2C protocol for product with SPI interface ICs?

I am working on FPGA project where I have to configure the onboard ICs with SPI interface specified in their datasheets and few with the I2C interface. I was wondering that, is it possible to bring ...
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1answer
69 views

Calculate maximum Interface Speed 32 Bit 100 MHz

I have a HSMC Interface which has 32 Bit width data word changing at 100 MHz. How is the correct maximum data throughput calculated? Is it just dataword_length / clock_period [bits/ns]. And then I ...