Questions tagged [interface]

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

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36 views

Modern equivalent of the 6402 UART?

The 6402 UART seems to be relatively unavailable or at least at the verge of discontinuance. Is there a modern version of this UART that behaves in a similar way?
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HCSL clock driving an LVDS input

I wanted to use a circuit from an eval board which uses a 6V49205 clock generator which produces a HCSL output, but the input is LVDS. I have attached the section of the 6V49205 datasheet which ...
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1answer
114 views

USB Communication

is it safe to add LEDs with D+ and D- line communication? I did this schematic(attached) and the communication does not work. where is the problem?
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1answer
62 views

I2C Level translator 5 V to 1.8 V using MOSFET, output look weird

I am designing an I2C level translator using MOSFET. I am using BSS138 DATA SHEET. My clock can go up to 1 MHz. The output is not coming properly for fast mode plus (CLK = 1 MHz, RISE TIME = FALL TIME ...
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1answer
58 views

Do i need additional IOs for this interface board?

I am designing a UI PCB which has an MCU which will interface with a main system controller (MSC) on a separate PCB. The UI PCB provides an initial power up to the MSC which then boots up its onboard ...
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4answers
244 views

Is there a way I can convert from USB to LVDS UART (~1Mbps)? [closed]

I'm working on a spacecraft that requires very low noise levels so it was requested that we pursue LVDS UART. So it's using something similar to RS-422 because it's differential, but instead of a ...
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11answers
7k views

Why did USB win out over parallel interfaces? [closed]

What were the technical reason(s) USB massively overtook parallel interfaces such as SCSI, IEEE-488, and enhanced parallel ports? I understand the hardware can be simpler with just one data line ...
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0answers
111 views

Add 5V bias power to use an electret microphone with XLR audio interface

I recently acquired an audio interface (Behringer UMC22) and, since it's quite a bit better than my motherboard, I'd like to connect my modmic 4 to the XLR mic input. The interface has phantom power ...
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1answer
91 views

How is Chassis ground connection implemented for an input cable with TVS diode protection?

I believe my question is different enough in specifics to Is it better to connect ESD (TVS) Diodes to chassis ground or signal ground? to warrant a new question. According to Electromagnetic ...
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2answers
66 views

Reconstruction of differential signal

I have a differential signal which will be transmitted from a system (transmits and receives the data through 2 wires only, there is no GND wire).The differential signal has 3 voltage levels -12V , 0V ...
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1answer
115 views

How does signal aggregation work? [closed]

I just wanna know how signal aggregation works. For example, there is an IC which can aggregate more than two interfaces(I2C, SPI .etc). Thanks.
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1answer
113 views

Programming an LCD interface with a ST7066U

I am trying to program an interface between my 2x16 LCD and my MSP430FR6989. The LCD communicates parallelly with the MPU (E RS EW D7 -- D0), and it uses an ST7066U controller IC. from reading the ...
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1answer
63 views

Efficient understanding of Hardware Software Interface in Embedded

I am a budding engineer in the embedded field. My work involves both the circuit design and software development of microcontrollers. So, I need to understand how the software is working on ...
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1answer
237 views

How to configure the I2C of the MSP430

I have an MSP430FR6989 development board (MSP-EXP430FR6989). I would like to program it to communicate with a MAX30102 Pulse Oximeter and Heart Rate IC, the interface is done through I2C protocol. I ...
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0answers
72 views

Ham Transceiver to computer Interface design question

I am building a Ham transceiver to computer interface, which has the RS232 port controlling the PTT on the radio. The circuit currently calls out for a 1.2K resistor in series with the RTS line and ...
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1answer
46 views

Write into external registers from FPGA

I want to initialise a register of an external component with a FPGA. The data is latched by the external component at every falling edge of the clock signal. You can see in the diagram that the SDATA ...
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1answer
86 views

Are every home gadget with the smart label capable to interact with microcontrollers? [closed]

Are every home gadget that is written smart on the packaging capable to be controlled by a microcontroller through some protocol?
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0answers
63 views

Connection Ethernet MACs without using a PHY device

I am designing a board that utilizes an NXP LS1046a processor and multiple Kintex Ultrascale FPGAs. The plan is to connect the processors up to the three FPGAs via the 1Gbe links. Since they are all ...
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1answer
264 views

Understand an I2C clock line implementation

I am trying to understand a C function from a legacy project which is supposed to manage the clock line for an I2C interface. It basically does as follow: Set pin to output: ...
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2answers
990 views

How to interface MIPI DSI with a microcontroller

I'd like to learn about interfacing a TFT LCD with a microcontroller via the MIPI DSI protocol and writing a program for it. Both have suitable number of pins, some microcontrollers support MIPI DSI ...
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2answers
574 views

Effects of test patterns

If I have an 8-bit high-speed interface say at 1GHz talking to memory and I want to do interface testing, I can send patterns like AA/55/00/FF. When I send a pattern like 55 i.e 01010101, every even ...
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0answers
68 views

Passive Level Shifter Needed - LVCMOS 3.3

The device that will be driving another device claims it is LVCMOS 3.3V but it doesn't appear to be. Here are the voltage levels of both parts: VoH(min)= 2.3V VoL(max)=0.8V ViH(min) = 2.0V ViL(max) = ...
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2answers
102 views

LVDS Termination - Not sure what it accomplishes

I am looking at the following schematic where there is an LVDS to LVDS connection. The common mode and swing are a little different between the output and the input. I am use to seeing 100 ohm ...
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2answers
31 views

LCD1602 not displaying any characters

I've connected an Arduino with a LCD1602. I've followed this exact tutorial: Link to the tutorial Whenever I see my LCD at a right angle (upfront) I can't see anything. But whenever I see my screen ...
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2answers
205 views

Interfacing SD card (SDSC) with Arduino Mega 2560 without SD module

I have just got into the idea of storing multiple scripts in an SD card, and using a custom driver written to the board to execute those scripts on demand. I have a 2GB SD card, and an Arduino Mega ...
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1answer
114 views

SGMII Termination - Not understanding recommendation

I am going to be using a processor that has a few SGMII interfaces. From what I understand, these interfaces have LVDS logic levels. I am not use to seeing the termination scheme as recommended below. ...
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1answer
30 views

SDI-12 voltage translator buffer

I want to implement an SDI-12 interface and I found this schematic online. The author says that the buffer translates the 3.3V voltage from the microcontroller to 5V for the SDI-12 line. However, the ...
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1answer
58 views

can I repair part fried socket

As image shows the power socket is fried, is there a method to repair it? BTW this is only the fried 4 pins is for +12v and the ground, one +12v still ok but don't know if it enough.
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1answer
44 views

Android Tablet Side Connector Interface Information [closed]

I'm not sure if this is on topic or not, but I'm trying to find out about the interface found on the side of some Android devices. An example can be found by side of the "pipo n2" device. It ...
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1answer
68 views

How to interface IO Link devices without any gateway/additional circuit

I am planning to use a distance sensing device like this distance sensor with a mini computer like the Raspberry Pi or the Jetson boards. I read that the interfacing requires additional gateway like ...
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107 views

LVDS Interface - Output Max Swing is Higher than Max Input Swing

I am connecting together two "LVDS" devices. The specs are as follows: Output: VoDiff = 247-600 mV, Vcm = 1-1.485 (1.25 typ) Input: VinDiff = 100-500 mV, Vcm = 1-1.6 (1.25 typ) So for the ...
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1answer
36 views

Interfacing 20x4 character LCD with LPC54628

This is the very first time I am dealing with the task of hardware interfacing. I needed to interface a 20x4 character LCD with an LPC54628 microcontroller. I am using https://www.sunrom.com/p/20x4-...
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40 views

Does libusb_bulk_transfer add CRC?

0 I'm writing a user interface program for USB device in C++ using Visual Studio 2019. I'm using libusb library. I want to do bulk transfer to the device, and I'm trying to understand the exact ...
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2answers
54 views

Are USB and/or Ethernet payload agnostic?

I'm working on a project in which I'm trying to reduce the number of conductors in a high-bandwidth, multi-signal communication interface that requires a fiber connection for isolation and a back ...
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2answers
141 views

How can I tell if my banana fits in the banana hole?

Are all banana plugs the same? Can I use these Fluke brand banana plugs and plug them in to this Extech brand phase rotation tester? Will they fit? What defines banana plugs anyway? Is there an ISO ...
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2answers
406 views

Rinnai water heater power and communication interface/protocol

My Rinnai tankless water heater can be connected to a wifi module that controls the recirculating pump and other functions. The only connection between the PCB of the water heater and the external ...
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1answer
172 views

Difference between LVDS SerDes and FPD-Link III SerDes?

I'm new to the world of video interfaces and am working on a project in which parallelized video stream data is transmitted and subsequently received by processing components on the other end of an ...
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31 views

Checking CAN Bus load in Vector interfaces

Are there any other ways to check CAN bus load via CANlyzer (other than Statistic window) or CANoe?
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121 views

Door Phone / Intercom interface to arduino and power from dc bias?

This is my very first post on a challenge I have been struggling with for a year. How can I build a extender to my door phone (Brand Fermax) while protecting the inputs on the arduino and avoiding ...
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1answer
87 views

Is it safe to bundle together 380V cable + 24V signal cable + network cable?

I have the following cables between two machines: 380V 3-phase power cable 24V signal cable EtherCAT cable I would like to create an interface using a modular connector such as the one in the ...
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3answers
371 views

16-bit Byte-Addressable RAM Interface

I am a beginner to computer engineering and electrical engineering, and I have watched the entirety of Ben Eater's 8 bit breadboard computer series so I decided that because I understood that well, ...
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2answers
113 views

How to properly interface button switches meters away from the host

I plan to place some buttons at about 50 meters (roundtrip) away from the host and I'm not sure if I'm doing it correctly. The I/O reading the signal will be from an MCP23S17 16bit GPIO expansion IC ...
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1answer
38 views

GSM SIM800C not responding

I'm using Arduino IDE software Arduino Uno board GSM SIM800C BSNL 4g SIM card Interfacing RX (of GSM) to PIN 2 (of Arduino) TX (of GSM) to PIN 3 (of Arduino) GND to GND Power supply For Arduino - ...
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27 views

Can One hook up several displays on the same RGB parallel interface?

I am working with a 800*480 24-bit parallel RGB LCD display. The required clock for the RGB interface has to be between 23 and 27 MHz (typ. 25 MHz). For testing purposes, I need to display "...
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1answer
635 views

I2S audio interface - sync of MCLK and LRCLK signals

I plan to use IC AK4430, an I2S digital interface sound output chip, to be connecte to an ESP-07 Wifi module via 3 wires (BITclk, LRclk and DATA). But the IC also require an input signal that they ...
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1answer
71 views

Battery powered 4-20mA sensing application

I have a base system that runs on 3-AA batteries which it regulates to a system voltage of 3.3V. I want to interface that system to measure a 4-20mA sensor. For the sake of argument, lets say that ...
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0answers
22 views

What is the advantage of having multiple remote terminal (RTs) in 1553B terminal?

I have been trying to understand the difference between 1553B terminals with single and dual Remote Terminals (RTs). I have given 2 links below for the references: link 1: Single RT link 2: Dual RT ...
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0answers
107 views

Which chip or module could I use to replace MCP23017 I2C expansion chip to avoid using I2C as communications bus as it has interferance issues

Currently I'm using an Odroid C1 (It's like a Raspberry 3 more or less) and 4 MCP23017 expansion chips to increase the input/output pins. It gives me 64 additional pins that I use for a domotics ...
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1answer
55 views

Help on translating 5V rotary signal output to interface with lathe's cnc controller!

I have a hall sensor (OH137 - open collector) as an index signal on my lathe’s spindle. I have the sensor pulled high by a 1k resistor and can’t change it because they’re both glued in epoxy. This ...
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1answer
137 views

DPI interface for Raspberry pi including backlight driver

I am designing a DPI interface for my Raspberry Pi ZeroW. I believe the screen I have is exactly the same as the Pimoroni Hyperpixel 4.0 Square, just without the chunky interface PCB: https://shop....

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