Questions tagged [interconnect]
The interconnect tag has no usage guidance.
96
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How do I tune ARM Socrates NIC QoS Address Latency Target Registers to get balanced bandwidth between two AXI Initiators?
I'm learning about the ARM Socrates NIC QoS features to provide balances arbitration between two AXI Initiators created two different sized transactions.
AXI0: 64B (awsize = 8B, awlen = 8 beats)
AXI1:...
3
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1
answer
56
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What Interface is my LCD display using?
My Tektronix TDS 2024's 5.7” STN display (320x200, color) needs replacing. Instead using the same expensive, hard-to-find, obsolete one, it would be a good opportunity to upgrade to a more modern ...
- 2,359
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Addressable RGB LED 'curtain' - how are parallel strings addressed?
I bought a cheap LED curtain device.. its 20x20 fully addressable LEDs. Its pretty nifty, and now I want to make one myself. (in fact, I want to eventually make 20 x 20 x 20 ... but let’s learn to ...
3
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3
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966
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How to make sense of USB connectors?
It seems USB connectors have 4 dimensions:
Type A, B, or C. And sometimes type AB.
Full, mini, or micro.
Male or female.
USB version.
Surprisingly, I can't find a good reference on those. If, for ...
- 619
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36
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Estimation of delay in digital circuit
I found this way to compute the High-to-Low propagation delay. How would this model be modified if instead of Having only a Cload after the transistor, there is a L-shaped RC segment (a low-pass first ...
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71
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Connecting multiple DC Sources (DC Bus)
I have a large area which I want to cover with camera and other low power devices. These devices are outdoors, and quite far away from where my intended main power source will be (say 400m). I'm ...
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1
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256
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What is the average length of interconnect wire that needs to be charged/discharged per floating point operation?
Problem setting
I'm interested in estimating an upper bound to how many floating point operations (FLOP) can be performed per Joule of energy dissipation on existing digital CMOS hardware. To do this, ...
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314
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How to properly connect metallic conductors to graphite electrodes?
I want to prepare graphite electrodes for electrolytic experiments.
I am therefore looking for good ideas on how to get very intimate, long term stable and low resistance connection between the ...
- 898
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35
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How different layers of cache connect in hardware?
I had a RISC-V CPU with L1 Instruction Cache and L1 Data Cache, and I want to connect these two L1 Caches to unified L2 Cache. I have the following questions:
Does the unified L2 Cache have dual port ...
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1
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130
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Mating cycles - alternatives to standard connectors
During my search for an IP22 or higher connector for SMT assembly I have realised that there are few options except USB and audio jacks that can take >1000 mating cycles. I don't want a standard ...
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720
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Can I charge a laptop with a solar panel? [closed]
I have bought a 30W solar panel, with output:
USB 2.0 : 5V/2.4A
USB3.0 (QC3.0): 5V/2.4A, 9V/2A, 12V/1.5A
DC: 18V/1.66A (Max)
I would like to charge my laptops. I have seen this power bank of 90 W, ...
- 113
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2
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100
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Best way to secure MMCX jack-to-jack adaptors?
I'm currently using an MMCX jack-to-jack adaptor to connect a wire from a transceiver to another wire from an antenna.
Through this adaptor, the wires click into it.
However, I would like to better ...
- 671
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1
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90
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Low-profile, panel-mount connectors
I'm working on a hobby project, a handwired ultra-low-profile computer keyboard with a 3D-printed case. The USB-C connector on my dev board is only 3mm tall, so it fits within the 4.5~5.0mm of ...
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1
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622
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Does AXI Read Interleaving only valid for AXI interconnect?
Understand that master can issue multiple read commands & expect the readback data might happen in interleaved manner.
Something to clarify here which is for single master to single slave scenario,...
- 175
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2
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232
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How to bridge the connections with this component? [closed]
I have 1.5mm2 cables to connect together, and up to 1700w 230v total to distribute.
I would like to connect all (9) connectors fo this component (on Reichelt):
Can I have a bridge like this one (but ...
- 173
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77
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What happens when there are multiple Read requests to the same address in AXI3/4? Does RVALID assert each time?
Basically the title. I am trying to do a verification on an AXI4Lite protocol. If I try to send a read request to the same address multiple times the RVALID is not re-asserted. Correct data just ...
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223
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Is it possible to write an "interconnect" in VHDL by hand?
An interconnect connects one or more masters to one or more slaves in a sort of system on chip design. In such a scenario there would be a master containing a standard bus like Avalon-MM, AMBA AXI, ...
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52
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Connecting boards
This may be a totally newbee question, but it's so basic that I can't find a clear answer and I've already smoked one board...
I need to connect two boards (a radio receiver's SBUS signal to an RC ...
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1
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119
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Differential Pair Mode Conversion [closed]
What is the purpose of using these mode conversions?
SCD
Input: Differential
Output: Common
SDC
Input: Common
Output: Differential
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247
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Female 24-pin 2 row mezzanine connector break out board?
This is a bit of an odd one, but does anyone know if there exists a breakout pcb board with pin headers that adapts to a mezzanine connector? (I hope I've my terminology correct.)
I'm essentially ...
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1
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473
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Connecting nichrome wire to copper wire
Can I attach a nichrome wire to a copper wire using a crimp connector like this? Is there an easier way to achieve this? Like soldering? The nichrome wire is expected to get as hot as 70 °C.
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How to connect J-link OB to an RF transceiver module?
I'm looking to program the RFM380F32 RF transceiver module which includes an ARM Cortex-M0+ processor: http://www.hoperf.cn/modules/soc/RFM380F32.html
The documentation suggests programming in Keil ...
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1
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102
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PCB board to board connector with thin footprint
I am trying to design a small PCB that goes into a bigger PCB.
My small PCB is mounting a very sensitive fragile sensor on the top surface that has to be wire bonded to the PCB, so I am trying to ...
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3
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474
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Best way to connect PCB to enclosed AC/DC power supply
I'm trying to minimize assembly time in a system that will require a PCB interfaced to an enclosed AC/DC power supply. Unfortunately, on-board AC/DC converters are not economical for my power ...
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1
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2k
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"The D-PHY specification defines the maximum lane flight time to 2 ns." Why?
I'm hoping someone can explain to me why the maximum lane flight time matters.
Impedance matching, skew, attenuation, etc. all make sense to me as a natural limitation to how long an interconnect can ...
- 21
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5
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1k
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Is there a "common voltage reference point" for all the circuits that connect together?
Nowadays, the whole world is interconnected. We often say one device communicates with another device through the network. In this context, the 2 devices are viewed as 2 separate entities. But I think ...
- 1,170
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1
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806
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Correct Way to connect 5 car batteries in parallel
My RV (which I bought used) came with 3 Deep Cycle Marine batteries in Parallel. A previous owner added wiring inside the coach for 2 more batteries, but they were not there when I purchased the coach....
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326
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How to implement an interconnection matrix in VHDL?
I was reading through the documentation of the AXI standard when I came across the interconnection matrix shown below. In short, the interconnection matrix provides a path for several masters to ...
- 404
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7k
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CAN Bus - Daisy chaining nodes
I have 6 nodes that I want to connect on the same CAN Bus. All the nodes are installed in the same 19" rack, so each segment will be less than 2 ft (0.6 m). The CAN Bus connection on all the ...
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2
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2k
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How to solder a wire to a massive copper busbar
I need to solder a wire (tinned coper) to a massive copper busbar, I tried two approaches but to no avail.
I tried heating up the busbar with a heat plate to 300 °F (150 °C) and then tried to solder ...
- 1,309
17
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4
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7k
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How to solder to this glass pcb?
I have this glass PCB I took from a calculator that I'd like to get working with my Arduino as a numpad, but it's a glass PCB. Is there any way I could solder wires to it?
- 171
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3
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605
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circuit for hot-pluggable device
I have a scenario, where device A provides 24V, device B converts 24V to 3.3V and feeds it back to ...
- 2,713
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5
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320
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What kind of connection to use between two circuit boards that move with respect to each other?
I need to connect two circuit boards - one with a microcontroller, power circuitry, display, etc to another with several sensors on. The connection will require somewhere between 4-10 lines - 5V power,...
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0
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125
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How to calculate distance between two wire-pcb connectors with high voltage for keeping connectors isolation?
I'm planning the way of connecting 8 devices terminal wires all together within a 6kV point (V+), there will be 8 more wires connected to GND (V-). Those V+ and V- points will be in the metal case. ...
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171
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What does 8W8 or 7W2 stand for in connector description? [closed]
Pretty straightforward from the title.
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What happens when there is a simultaneous Read and Write launched to the same address in AXI3/4?
I have a doubt regarding the AXI3/4 protocol. Assume a hypothetical scenario where a single master issues a valid Read and Write transaction to the same address simultaneously.
From the AXI ...
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AXI4 Interconnect blocks transactions?
I have an AXI4 master on one board and AXI slave on the other (BRAM controller). The data is transferred using Chip2Chip and Aurora as shown in the figure. I would like to initiate several burst ...
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4
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3k
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Can I use USB data pins as a power source?
I'm trying to build a circuit as seen below, where a sequencer controls the flashing of some LED sections, and an SPDT switch controls power to either the left or the right section of LEDs.
However, ...
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Are connectors and pin outs standardised by the MIPI alliance? [Also can anyone name this connector]
Does the MIPI alliance standardise or are there at least any conventions for connectors and pin outs between devices that use there protocol specifications?
The device I am interested in (Microsoft ...
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2
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732
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Options for permanently joining two flexible printed circuits (FPC) together?
Robust, simple and cheap method to join a pair of flex pcbs / flex printed circuits (fpc) together?
One option could be making both circuits rigid-flex then joining as one would two pcbs, which would ...
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73
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Thread pitch on locking 1/8" audio connectors?
I feel silly that I can't find this on Google... what is the thread size on locking 1/8" audio connectors like these? There seems to be a de-facto standard, but I can't find any numbers and it's hard ...
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quick path interconnect vs AXI
I want to know the performance difference between AXI and Intel's quick path interconnect which has been replaced by Ultra path interconnect(interms of latency). This is for very low latency(25 ...
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2
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32
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RF connector/ interconnect for Gate signals
I need connector as shown in pictures. I spent good couple of hours trying to find them on Farnell but the lingo for such connectors is little difficult for me. I read a lot too but couldn't find ...
- 155
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736
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Crimp and Solder connectors for flexible electronic
I am desperately looking for crimped connectors compatible with flexible PCB and devices such as the one depicted in the following figure :
This is a pressure sensor based on a piezoelectric polymer. ...
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399
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Coplanar PCB interconnect solutions - As cheap as possible
TLDR: Hardware design Newbie is lost in the jungle of options.
Base Problem: I am designing a set of PCBs that are supposed to fit into a square grid pattern and be recombined in different ...
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SPI clock signal problem
I am working on a breaboard prototype involving an Arduino; it used to work fine (connection point (a)) until last day when SCK went missing. Or not missing but distorted; sometimes the logic analyzer ...
- 1,060
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2
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224
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connector for male usb A plug not on PCB
I have a PCB that needs 5V input and I want to plug my contraption(PCB + battery in a housing) into a USB power receptacle. The housing has a male USB A plug popping out perpendicular to the PCB and I ...
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653
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Soldering USB cable to the bottom of USB connector
I have a USB device with a type A jack connector (see photo). I am integrating this device as a part of another device and due to requirements for ruggedness I would like to have a fully soldered USB ...
- 471
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4
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31k
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What is the advantage of optical TOSLINK over RCA coaxial cable?
A popular standard for the transmission of digital audio between audio devices has been the AES3 standard (also known as S/PDIF). The standard sends stereo PCM audio and of often found in consumer ...
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3
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1k
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Advantages to solder over headers?
I'm in the process of assembling an embedded (Raspberry Pi-based) machine that has a lot of sensors wired together via I2C. I find myself adding headers for the I2C lines to all the little tiny ...
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