Questions tagged [interface]

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

Filter by
Sorted by
Tagged with
0 votes
2 answers
37 views

STM32H750IBK6 SDRAM FMC CLK maximum frequency

In the STM32H750IBK6 REV V, what is the maximum FMC_CLK to run SDRAM? The datasheet has two different values (for the rev V and rev Y IC revisions). What is the safe area of operating FMC CLK with ...
0 votes
1 answer
22 views

Can HSG + TIM + HSG sandwich ever be better than one layer of HSG?

Here is a photo of a big diode and it's TIM (thermal interface material.) The foil appears to be aluminum, very thin and reflective, with white, crusty HSG (heatsink grease / paste / compound) on ...
  • 14.3k
0 votes
1 answer
33 views

On-air light circuit interface

I need help for the design of on-air light interface. The DB15 connector output of console arc10 is 12 V, 200 mA (max). The load is on-air light bulb, 230 V AC. I'm considering the interface circuit ...
0 votes
0 answers
30 views

How to get 70" LCD with LVDS connector to work? Is matching 2ch 8bit interface needed?

I have two working 1080p 70" Panels but the interface board is quite custom and somehow broken - the HDMI input just causes some flickering at most. I already did a lot of research but I did not ...
  • 101
1 vote
1 answer
93 views

Relationship between PSEL and PENABLE signals in the APB protocol

I have some questions related to the relationship between PSEL and PENABLE signals in the APB Protocol. The specification informs that: The PENABLE signal is asserted the following clock after PSEL ...
1 vote
1 answer
79 views

On a (Windows) PC, can the TxD pin on COM1 be bitbanged? If not, why not?

In this question: Why usb to serial port converter can’t program avr microcontroller? Cornelius claims: "DTR and RTS are the only pins of the serial port that can be bitbanged." But is that ...
0 votes
2 answers
74 views

How do I find resistors values for a TTL to ECL interface?

This is the photo of the ttl to ecl interface
1 vote
1 answer
86 views

Is it better to have one computer do everything or have a computer and a microcontroller for servos? [closed]

I am debating whether it is a good idea to offload the 12 servos I plan on having in my project onto an Arduino rather than on the Raspberry Pi. I am planning on using the Adafruit 16-Channel 12-bit ...
  • 55
1 vote
1 answer
126 views

LIN interface INH pin

What would happen if I pull down the INH pin of this IC to GND? I am unable to understand what would happen if I pulled to GND or make it HIGH? Can someone help me ?
  • 3,871
6 votes
4 answers
1k views

Do you have to use the same transceivers for RS422 at both sides of a link?

If I have two boards connected via RS422, do the same transceiver ICs have to be used at either side, or is it sufficient to have logic level voltages be the same even using different model ICs?
0 votes
0 answers
13 views

Clock division and duty cycle for ST8034P Smart Card interface

The ST8034 is a family of interface ICs for contact Smart Card. Here is the Data Sheet. My question is about the ST8034PQR. when the CLK output is active, does fCLK = fCLKIN or fCLK = fCLKIN/2 ? ...
  • 1,162
0 votes
0 answers
47 views

Check status of MIPI-DSI device (check display is functioning)

We have a MIPI display driven from a dedicated controller/converter which accepts I2C commands and can translate them to/from MIPI DCS commands. On occasion at power-up the display itself does not ...
  • 6,919
1 vote
0 answers
66 views

Freeing NUCLEO STM32 board pins for FMC interface use

I want to interface a Nucleo-H743ZI2 board (MB1364E) with a memory chip using STM32's FMC. In order to do this I need to free up the following 4 pins, to be used by the morpho connector: ...
  • 83
2 votes
2 answers
129 views

Should LVDS SerDes communication be with or without driver?

I have LVDS SerDes signals coming out from FPGA1 IO and have a few questions regarding the design. My plan is to output the signals from the FPGA1 to a connector and from the connector a cable will be ...
  • 179
5 votes
1 answer
356 views

Cooling SMDs from the bottom

I remember a clever way to cool a SMD with a thermal pad from the bottom. It's like a copper pin or a rivet that goes through the board, in a hole right under the SMD thermal pad. Then it has a flat ...
  • 68.2k
2 votes
2 answers
59 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 ...
0 votes
2 answers
94 views

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....
0 votes
1 answer
81 views

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 ...
  • 189
1 vote
1 answer
54 views

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. ...
0 votes
1 answer
173 views

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 ...
  • 135
1 vote
2 answers
731 views

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 ...
  • 135
0 votes
1 answer
47 views

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, ...
  • 49
0 votes
1 answer
85 views

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 ...
2 votes
2 answers
1k views

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 ...
0 votes
1 answer
115 views

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 .
0 votes
0 answers
40 views

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 ...
  • 385
0 votes
1 answer
155 views

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 ...
1 vote
1 answer
169 views

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 ...
  • 2,566
0 votes
1 answer
227 views

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 ...
  • 13
0 votes
1 answer
110 views

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 ...
1 vote
2 answers
766 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 ...
0 votes
1 answer
128 views

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 ...
  • 816
0 votes
1 answer
406 views

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 ...
  • 157
0 votes
0 answers
657 views

Syntax error in SystemVerilog based UVM testbench

I have been getting the following syntax error on compilation- ...
  • 9
1 vote
1 answer
197 views

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 ...
  • 215
0 votes
0 answers
33 views

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 ...
  • 189
0 votes
1 answer
69 views

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 ...
  • 422
0 votes
1 answer
96 views

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 ...
1 vote
1 answer
161 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?
  • 3
0 votes
1 answer
739 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 ...
  • 692
1 vote
1 answer
60 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 ...
  • 707
3 votes
4 answers
2k 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 ...
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 ...
  • 1,281
0 votes
0 answers
688 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 ...
2 votes
1 answer
624 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 ...
0 votes
2 answers
142 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 ...
-2 votes
1 answer
372 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.
1 vote
1 answer
647 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 ...
-1 votes
1 answer
79 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 ...
  • 645
1 vote
1 answer
842 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 ...

1
2 3 4 5
8