Questions tagged [interface]

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

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33 views

FT810 EVE as a GPU for an embedded system [closed]

I know that FT810 EVE is used in the Gamebuino. So, as I was looking for a GPU for my embedded system, I thought it may be a good idea to use FT810 EVE as the GPU. I want to produce sound and output ...
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1answer
65 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
75 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
58 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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19 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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21 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
30 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
39 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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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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50 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
44 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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57 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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67 views

Does anyone recognize this debug connector?

I'm looking at a board with this debug interface and I would like to know what it is so I can consider it in future designs. The scale below is 1 mm gradient. It looks like something off the shelf ...
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34 views

What display interfaces do automotive screens use?

For example the screens inside tesla cars, I first think of HDMI, many high end embedded processor boards come with HDMI outputs, but is this connector found in actual mass production or industrial ...
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1answer
39 views

What is the purpose of having two type of output interfaces on this ADC?

The ADS4126 comes with a Double Data Rate (DDR) LVDS output interface and a I have following questions: What criteria is used to decide which one of the two to use? Can both be used to read the ADC ...
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34 views

How to access Realtek SMI interface without a dedicated processor?

I'm working with Realtek's RTL8367 switch IC. Background: I am having trouble with throughput being unbalanced. If I run iperf between two ports in one direction I get a different throughput if I ...
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23 views

Where can I Find the Memory map and register table for the S70FL01GS

I am currently working with this device: https://www.mouser.com/datasheet/2/100/001-98295_S70FL01GS_1_Gbit_128_Mbyte_3.0V_SPI_Flas-1102682.pdf The datasheet provides some high-level details about ...
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1answer
99 views

Bad results from using Lattice FPGA Interface to capture ADC data

Im trying to capture DDR data from ADS5463 (TI ADC). As the datasheet suggested I need to delay the clock and sample the data with DRY clock. Im using Lattice FPGA LFE3-35EA.. and using Lattice High ...
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4answers
119 views

getting access to more UARTs on micro controllers

I will need to interface a micro controller to some breakout boards that only talk through UARTs, so confronted with the eternal 'need more hardware UARTs' problem. I have seen 2 kind of solutions ...
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Questions about Interfacing ADC: ADS5463 with FPGA

Im beginner FPGA Designer. I need to interface the ADC component: ADS5463. datasheet: http://www.ti.com/lit/ds/symlink/ads5463.pdf with a FPGA (lattice ecp3). I need suggestions how to start ...
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1answer
100 views

What factors does the set-up time and Hold-time for an interface IC depend on?

I am working with EEPROM and QSPI Flash ICs. They have this electrical parameter called as Setup time and Hold time. I know we must not violate this in order for proper communication. But my question ...
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64 views

Project with smart phone like camera

I have an idea for a DIY electronics project which involves a camera where I want the camera to be small. I thought may be to get a camera component similar to the ones used in smart phones. But my ...
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1answer
66 views

Usage of 74LVC1T45 in open-drain case

I want to do one 'universal' or 'multiprotocol'-capable IO block and currently thinking of using 74LVC1T45 level translator to do the communication between two different voltage leveled systems. I ...
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22 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
192 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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55 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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2answers
83 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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102 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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58 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
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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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
295 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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179 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
223 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
51 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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1answer
88 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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110 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
169 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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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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2answers
370 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
60 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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186 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
157 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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242 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
422 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
802 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
504 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
228 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
70 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 ...
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1answer
87 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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