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Questions tagged [soc]

A system on a chip or system on chip (SoC) is an integrated circuit (also known as an "IC" or "chip") that integrates all components of a computer or other electronic systems. It may contain digital, analog, mixed-signal, and often radio-frequency functions—all on a single substrate. SoCs are very common in the mobile computing market because of their low power consumption. A typical application is in the area of embedded systems.

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APB PENABLE stays only for one PCLK regardless of PREADY signal

I followed the AMBA 3 APB specification to design my APB slave. Reading from slave requires several clock cycles to make the data ready for the bus, so I set my PREADY signal for one clock cycle ...
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54 views

How to program SoC chips like CC2541F128RHAT [closed]

I am working on a BLE project. As per initial research, decided to use the cc2541 chip as BLE module. I have found one here. As per the datasheet, it shows it contains BLE and MCU. I need to program ...
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30 views

Can I2S tdm interface send more channels with less sampling frequency?

We have a arm SoC(system on chip) connected with I2S to a DSP (digital signal processor). SoC and DSP both support 48khz, 8 channel and 16bits in TDM mode. Is it possible to use this interface to ...
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129 views

Is there any single-board computer/system-on-a-chip with good documentation for developing bare metal? [closed]

I always wanted to develop my own crappy operating system, but the many weird legacy quirks of the x86/PC platform kept me from doing so (e.g. real vs protected mode, only low resolutions available in ...
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165 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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48 views

Change memory content of FPGA SoC (DE1-SoC) using software while .sof (EPCQ) is running on FPGA

I am new to FPGA and FPGA-SoC world. I have a DE1-SoC board. I am doing a project. Hardware design of the project contains a memory block which is initialized using .mif file. I know that we can use ...
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55 views

ARM SoC UART interaction with peripheral UART

I am sorry that I couldn't find this answer in this site or web. I have an ARM SoC(Host) which needs to communicate with the peripheral having ARM Micro controller using UART. Linux runs on top of ARM ...
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Why are accelerometers (and other MEMS devices) so rarely integrated into components?

With the way things are headed, more and more functionality moves into a single chip each year. However, one thing that seems to remain completely untouched by this is MEMS devices like accelerometers ...
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SOC vs ARM Core

I am trying to understand the difference between SoC ( System on Chip ) and ARM Core. In the following post, I have read "The typical ARM processor in use today is integrated with peripherals on a ...
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1answer
94 views

ETSI[Europe] Regulations for 2.4Ghz ISM Bandwidth Limit and RF Power

I am trying to interface my STM32 with NRF24[2.4 Ghz ] or TI CC2500[2.4 Ghz] models. I am finding issue regarding maximum allowable Bandwidth and RF power set by ETSI[Europe] EN 300 328 and EN 300 440(...
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82 views

using smartphones SOC or other components as microcontroller like arduino [closed]

i have a smartphone which has stuck in boot loop,i was just wondering if i could use it's internal components like SOC to use it as microcontroller like "arduino".have anyone ever tried it?or possess ...
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How far away can DDR3 memory be placed from the SoC?

I thought of an idea where i have a pcb with a soc on it, and a seperate one with the DDR3 memory that can snap into each other. This way i can replace or debug specefic parts of the system and have e....
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5k views

Below which voltage should an AGM deep cycle battery cease to supply charge to devices

I am using an AGM deep cycle battery 130Ah 12V connected to 200W solar panels and a 500W inverter to power electrical devices such as fans, laptops and lamps. The inverter has an automatic cutoff ...
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191 views

Circuit to Toggle Ultrasonic Sensor

To preface I am a software developer, not an electrical engineer so please go easy on me as there are likely gaps in my knowledge here. I am utilizing an nrf52832 SoC (specs: https://github.com/...
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125 views

How to select the model selector for TI IBIS model of DRA725?

Following is the IBIS model selector section for the DRA725 SoC in IBIS file. Currently, I do SI analysis of DRA725 with Mentor HyperLynx SI, Intention is to select the right model selector. What to ...
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61 views

Difference between SOC and MCU [duplicate]

What i know is that system on chip(SOC) is like microcontroller alongside with other component like bluetooth module etc. So what is the difference between the mcu in soc and the normal one ? and ...
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569 views

Wiring on-off switch with resistor to SoC

Please note: although this question involves a Raspberry Pi (hereafter RPi), it is really a pure electronics question at heart! I am trying to connect my RPi 1 Model A to a breadboard with a single, ...
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Finding RAM product/solution for tiny embedded linux system (<1GB)

I'm finding it quite difficult to navigate among the copious memory solutions available when selecting a RAM solution for a tiny embedded system I'm developing. I will run an OS such as PetaLinux on ...
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2answers
2k views

How to calculate battery's energy?

To calculate battery's energy, one should use the nominal voltage or 100% SOC voltage?
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2answers
124 views

How to use a reference design in datasheet?

I'm trying to gain a better understanding on what this is and how to use it. I know this is a datasheet for SAMB11 SoC, more specifically the reference design on page 50 is what I'm inquiring about. ...
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87 views

Building a board game, not sure what to use for the “computer” [closed]

My brothers and I are building an interactive board game that will require a central device to keep track of the number of players, player resources, turns, location, etc. I have an idea of how I'm ...
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80 views

How to sense whether battery SOC is above or below certain levels?

I'm trying to build a power electronic converter with three operation modes. The operation modes are determined based on the state of charge of battery powering the converter. State of charge (SOC)...
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49 views

What thing should be consider while choosing BLE uC [closed]

I'm newbie in BLE segment need micro-controller with bluetooth (SOC). Please help me what thing should be consider while choosing SOC.
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302 views

How to use an USB port with 3.3v power output?

I am trying to use an USB port on a development board that doesn't provide a standard A socket. Instead, it provides 4 pins: 3.3V, two data pins and ground. Looking at the datasheet of the SoC, there ...
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2answers
362 views

Standard Interface Between LCD and GPU

Almost all smartphones on the market seem to use a distinct LCD as their display, though most use an ARM processor with a GPU from one of a relatively (compared to the screens) small number of ...
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90 views

If a SoC is given more memory then it is able to use, how does it deal with that?

Say it can only use 2GB's, and is provided 4, does it only use half, or not use any of the ram?
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1answer
899 views

AXI master bus functional model in vhdl

I am a Verilog user trying to make sense of VHDL code of AXI4 Master bus functional model (BFM) AXI bus master VHDL code I have a few questions from the above code What would block diagram of the ...
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1answer
864 views

Altera equivalent of the Xilinx Zynq UltraScale+ MPSoC [closed]

I'm new the the FPGA world. I was wondering if anybody could tell me the Altera equivalent of the Xilinx Zynq UltraScale+ MPSoC? I'm looking to buy a development board but it needs to be from Altera....
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3answers
882 views

What's the difference between bluetooth-soc chips and bluetooth modules?

I'm currently shopping for a Bluetooth transceiver to play around with. After doing some research, I think there's a bit of crucial terminology that I'm missing. Specifically, there's two products ...
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7k views

Does Intel sell CPUs in ribbons?

I used to work at this electronics assembly plant in Arizona, and the machines there used reels of SMT parts that were like a bucketed plastic ribbon with a peel-off plastic seal. I don't know what ...
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3answers
2k views

what really are: Microcontroller (uC), System on Chip (SoC), and Digital Signal Processor (DSP)?

The actual question is at the end. But reading that alone might not show you why am I confused. I wrote this post starting with some definitions, assumptions, and speculations and then asking the ...
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550 views

Comparing FPGA to microcontroller or SOC, assume same functionality, how big can FPGA get?

Looking at this answer to FPGA's vs Microcontrollers --https://electronics.stackexchange.com/a/4393/127001 It mentions that FPGA is space-limited, and MCU is time-limited. So this got me to ...
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85 views

SD cards electrical specification

I designed a -very simple- circuit powered by a 12V battery. I would like to add a sd card connector (its type is of no importance right now) on that circuit. But I am concerned by the datasheets I ...
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1answer
228 views

Wifi and bluetooth PHY on SoC

I look at different cpu datasheets and a question keep coming back. On a SoC, and in the case of a PCB design, if I want the maximum throughput between a dumb wifi/BLE chip and my processor (cortex ...
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1answer
2k views

How do I modify pin assignments to use my signal names in Quartus Prime?

I am working through the Quartus Prime Introduction Using Schematic Diagrams tutorial for Quartus Prime Lite 16. (I am using version 16.0.2 on Windows.) Because I have a DE1-SoC board, I specified ...
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138 views

What affects the design of a SOC or uC to offer XIP or RAM for code execution

I have been trying to understand the factors in controller / SoC design such that it can execute code from either XIP flash or from a RAM. There are controllers that support an XIP flash of around 5MB ...
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1answer
100 views

Pin name confusion with Allwinner A20 and DDR3L/2GB

I've been trying for the past hour to find the correct definition and the proper way to use the, DML, DQSL, DQUO, DMU, DQSU, DQSU, the part has two DQSU pins. There are no corresponding pins on ...
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319 views

Are DDR3 SDRAM's DQL and DQU pins different?

Obviously they are, but I am using the Allwinner A20 and alliance memories AS4C128M16D3B-12BCN 2GB, it has DQU1,2,3,4 etc pins, but the Allwinner A20 does not, it only has the DQL, no DQU. This ...
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1answer
3k views

How do I fix pin assignments on a Quartus Prime Lite project?

I am using Quartus Prime Lite Edition 16.02 and am trying to fix messed-up pin assignments for a simple project with a single verilog file: ...
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1answer
249 views

What is this symbol that looks like a parallelogram? [duplicate]

it says "180ohm at 100MHz" next to it. So I'm guessing that it's a non-air-core inductor. It seems to fit this: What is this symbol on the schematic? - except that the symbol is slightly different ...
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2answers
742 views

Why do a lot of new low cost IoT modules use a MIPS 24K processor rather than ARM? [closed]

it seems like a lot of new low cost (< $20) IoT modules that pair a microcontroller with 802.11 networking rely on the MIPS 24K processor. Based on my experience this is a relatively obscure choice,...
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1answer
78 views

Can custom code be run along side the OS on Allwinner A20? [closed]

My design utilises a programable AttTiny to manage things like events on the main PMIC, handle resets on the wifi and bluetooth etc, and the status LEDs, I wanted to communicate with the main CPU from ...
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1answer
85 views

Allwinner A20 power up pin? [closed]

I am working on a design using an Allwinner A20 SoC, but I am after quite a lot of googling, unable to find the Power On pin, or any pin that is normally used to initiate the power up, would it be ...
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2answers
307 views

Voltage Doubler design parameters

Looking for help answering a few question about choosing parameters for a small voltage doubler circuit. I'm looking to prototype a USB powered random number generator based on the shot noise of a ...
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1answer
171 views

What's the reason for power down sequencing in an SOC can you damage it in some way?

Power on sequencing I understand. But why do power off sequencing? I could understand if you had to do something before power died, or maybe you just wanted to shutdown I/O before core so that no ...
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1answer
472 views

rx_polarity inversion in USB3.x

As per USB3.x specification there is provision of rx_polarity_inversion can any one exactly says, what is the reason behind it? Edit: Normally connection of ...
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1answer
273 views

how do you know the each parameter values of SDC at the first time?

when we do synthesis with SDC. we should be used with SDC. But I want to know what if you are in situation where the synthesis of yours is the first time, also the company does not even did synthesis ...
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2answers
140 views

How do I begin to learn how to build a device like beaglebone or raspberry pi? [closed]

I just want to learn how to get all the necessary components like intel cpu, amd or allwinner and wire them together. How do I even start? What knowledge I have. CompSci Degree (Maths are covered ...
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2answers
308 views

Access NEON coprocessor from programmable logic in Zynq

For the past few days I've been thinking about the neon coprocessor in the Zynq SoC and I have a question, is it possible to send instructions to the neon from the PL side of the SoC? Imagine I have ...
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1answer
109 views

Options for video development [closed]

What are my options for video development? I am talking buying a development board, then translate that to custom pcbs and hardware. With the rise of smart phones we have seen a plethora of hardware ...