Questions tagged [interface]

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

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Is it possible to interface a 50 V DC analog sensor with an Arduino? [closed]

I am trying to run a 50 V DC side-scan sonar with an Arduino. The side-scan sonar interface board is bad, and I cannot find a replacement for it.
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2 votes
2 answers
54 views

How do I interface a low power controller with a higher power load?

I am not an electrical engineer (rather a photonics engineer), so I am looking for some direction on how to attack an issue I have. Basically, I need to drive a 150 Ω load with a computerized ...
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SerDes, FPD link, Forward Channel, back channel

I have some quesion about FPD link with SerDes As I know High speed Forwad channel data and Low speed back channel data share one channel paht evenif their direction are opposite. How can this be ...
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CAN-Physical Layer PtP

In a current design i have to form a Point-To-Point communications link in an industrial environment. Based on some research and thinkering i came up with the idea to use a CAN-Physical layer for this....
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MAX31865 data readout in continuous conversion mode

Reading the MAX31865 data sheet, it remains unclear to me when / how conversion results are latched in automatic (continuous) conversion mode. Figure 9 shows how /DRDY is set (it goes low when new ...
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Trying to understand Output Leakage vs Input Current

I have a device (VSC8540) driving another device (LS1046). The driver specifies output leakage current as +/- 85uA. The receiver specifies input current as +/-50uA. First of all, is the input current ...
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Active filter for low capacitance AC coupled input

I need to interface an AC coupled sensor with rest of my system. The sensor I am working with produces approx. 10V peak with 10V of DC offset but it has a very small series resistance about 50fento. ...
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Interface a CML device with FPGA

I want to interface an IC with an FPGA however I noticed that the datasheet says the digital control inputs are differential and CML standard based. Can someone please guide how to interface this if I ...
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PCIe End-Point configuration for communication with Root Complex

I have an ambiguity regarding the PCIe initial configuration which is performed by the root complex (RC) on the end-points (EP). Both devices have their own base address registers (BARs). The RC ...
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ADF4106 PLL output voltage lower than ATmega8A input voltage

I am working on making a frequency synthesizer getting ~900 MHz out of a VCO, using ADF4106 PLL. Now, for programming the PLL, I am intending to use AVR ATmega8A microcontroller. Everything is good, ...
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What is exactly a transaction initiator and executor in UVM port and export?

Screenshot from this video. Whereas in UVM, sequencer has an import/export and driver has a port. Sequencer seems to be the transaction initiator and driver as the executor (as it is finally ...
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Can I use two I2C interfaces on the same STM32 MCU to communicate between each other?

I have an STM32 Discovery board and I want to test the I2C protocol but I don't have any other devices to test with. I want to know if I can use two I2C interfaces on the same board just to act like ...
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I want to send F12 keyboard command through STM32F0 to PC

I want to send F12 command through STM32F0 microcontroller to PC through UART. I am getting the data on Hercules but PC not operate through that data. Only data received on Hercules .
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Interfacing with a micro display module

I'm planning a project for which a tiny (maybe 1-2cm diagonal) display would be ideal. Some devices exist (mostly for camera viewfinders or projectors) but I have no idea about how to interface with ...
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ST7789 display: pins IM0, IM1, IM2, IM3 are not accesible

In a [ST7789 LCD](https://www.adafruit.com/product/3787, how do I set the IM[3:0] pins for select the MPU Interface Mode? The manual just shows the values of IM[3:0] for each interface but doesn't ...
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1 answer
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How to interface MCU with open-collector output?

I have a 3.3VDC microcontroller (based on Nordic nRF52840) with digital inputs which I need to interface to a device that outputs slow pulses (1 second) via an "open collector output". The ...
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ADC interface to MCU

I have been looking at the ADC ADC12010CIVYX/NOPB 12bit 10MSPS, (https://www.mouser.in/ProductDetail/Texas-Instruments/ADC12010CIVYX-NOPB?qs=7X5t%252BdzoRHATGLGld5L%2FWA%3D%3D), with a parallel ...
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MIPI Bridge 2.5Gbps or Above [closed]

I was looking for some MIPI bridge solution and mostly found MIPI to LVDS Bridge. But the problem with LVDS is that it can't support more than 1.2Gbps. I was looking for some solution which can ...
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2 answers
669 views

Help discovering communication protocol used on faulty LCD matrix display

I own a device that has faulty 256 x 64 dot matrix display (flat cable damage + some bug infestation). After a disassembly I discovered that display is connected via 20-pin connect (soldered pins). I ...
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I2C Level Shifter pull up Calculation

I am using PC9306(https://www.ti.com/product/PCA9306) for one of my project with Vrfe2=5v and Vref1=1.8V.Below is the block diagram. My CLK is running at 100Khz. I got the equations for pull up ...
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How to connect a system on module to my customized carrier board

I want to use MYC-Y7Z010/20 CPU Module from MYIR company (http://www.myirtech.com/download/Zynq7000/MYC-Y7Z010_20.pdf), the carrier board for this module consists of interfaces I don't need, including ...
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Will this interface work? HCSL Clock interface

I have an HCSL interface and I want to make sure it will work correctly. The oscillator is a AX3HAF1-125MHZ part and the receiver is the NXP LS1046 device. The specs for the oscillator are: Output ...
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Breadboard-type interface to ILI9341 ST7735 TFT display

I have an ILI9341 ST7735 240 x 320px display which I bought intending to use with a 6502 IC. However I cannot find any details online of the basic method of interfacing - all electronics projects seem ...
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Syntax error in SystemVerilog based UVM testbench

I have been getting the following syntax error on compilation- ...
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1 answer
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How to interface to more CSI-2 devices than available CSI-2 modules on MPU?

the problem is: I have a MPU which has only 2x CSI-2 modules (each with 4 data lanes), however I want connect to 4 other devices over CSI-2 interface (each device has one CSI-2 module). So the ...
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Need to see if I calculated Digital Logic Levels Correctly for Interface

I am trying to see if I calculated the correct current values for the following interfaces. The first interface shows no margin at Voh-Vih as they are identical, but the LS1046 was tested at IOH=.5mA ...
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Need help to understand optocoupler datasheet

I am experimenting with AC optocoupler (SFH628A-4) to sense AC voltage(240 VAC) in a circuit. As per the data sheet (https://www.mouser.in/datasheet/2/427/sfh628a-1767413.pdf), the absolute maximum ...
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Gigabit Ethernet: capacitor isolation (1st device) - transformer isoaltion (2nd device) will it work?

I am designing an adapter board for a camera which is an original device with Gigabit Ethernet interface. The previous version of the adapter board was using LAN7500 and transformer as a USB dongle ...
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1 answer
129 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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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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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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3 votes
4 answers
1k 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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24 votes
11 answers
8k 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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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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2 votes
1 answer
380 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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2 answers
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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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-2 votes
1 answer
279 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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1 vote
1 answer
329 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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1 answer
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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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1 answer
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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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6 votes
1 answer
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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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1 vote
1 answer
58 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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1 answer
119 views

"smart" label on home gadgets package and mcu [closed]

Are any home gadget that is written "smart" on the packaging, capable to interact with a microcontroller through some protocol or "smart" label is just another marketing ploy?
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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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2 votes
1 answer
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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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2 answers
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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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4 votes
2 answers
586 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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2 votes
0 answers
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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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1 vote
2 answers
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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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2 answers
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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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