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Pages 8 and 12 of the FAN6300A datasheet explain that the primary peak current limit of the FAN6300A flyback controller reduces as the primary DC bus voltage increases. This is said to be done by the FAN6300A sensing the auxiliary coil voltage (via a potential divider) when the FET is ON. However, we had a Flyback (SMPS) power supply designe
For verification purpose i have connect my master controller to other system where i got the same issue. So you suspect the master controller is sending weak signal. In the CAN network most of the signal current pass through the bus termination resistors. So if you increase the value of the termination resistors then the signal v
Hello, I've implemented a Half Rate DDR3 controller on a Cyclone V FPGA. There're 32 DQ lines - so the internal bus width is 128 bits (for WRITEDATA as well as READDATA). The address width is 26 bits. Now, because the DDR3 holds only 32 bits (and not 128) in each cell - the cell address is 28 (and not 26) bits wide. So - when I issue a rea
Not sure if you understand the concept of dominant/recessive CAN bus state. A CAN node that is not transmitting is floating and does not load the bus. You can consider it physically off. If the question is referring to controller activity, just set it up to not responding.
Hello friends, I have solved many of my critical problems with help of yours and i am so obliged for your helps. At this time my concerned was for designing a bus door's controller PCB with electromagnetic compatibility (EMC). Honestly i don?t have a good knowledge of EMC designing for PCB. controller circuit is given in (...)
Hi, I need to know what all error handling mechanisms in can protocol which can be handled. then what happens if send 2 message of same id in the bus ? you can explain with respect to any controller . thanking you in advance.
Arduino mega +ssd1963 Problem Hi all.. I have designed a custom PCB with ATmega2560 for my project. Have a 4.3 inch tft on it With SSD1963 controller (16bit data bus). All the data and control lines are translated to 3.3 logic With 74ahc541 buffers. The connection from my PCB to display module is via a 40pin flat ribbon Cable. Earlier I hav
Hi, the names on the CAN controller say RD and WR. These are control lines for parallel bus communication. --> These are no serial, no UART, no RxD, no TxD lines. Please refer to the SJA datasheet on how to communicate with the IC. Klaus
I would like to know whether it is possible to interface stm32f103vct6 with winstar display WF70Q using FSMC bus? I would like to print moving images on the display.the datasheet for both are attached. Also if it is possible to interface,which fsmc topology do we need to use?is it asynchronous non-multiplexed NOR write method? What is the ma
CAN is not very high speed, so normal I/O pins on the FPGA (GPIO) can be used, but the FPGA pins are not electrically compatible with the CAN bus. Each controller needs an external CAN transceiver. It is not a problem to fit 4 CAN controllers in an FPGA. Search for "SN65HVD230" on Aliexpress or Ebay and you will find many boards that will (...)
CAN is based on I2c with additional features. Never looked at it this way. I2C is a synchronous protocol involving a clock CAN is an asynchronous protocol The only similarity is the usage of dominant/recessive bus states.
Hi everyone Is there any free implementation of vme bus controller or master in the web? VHDL or verilog? I need vme bus controller for my PhD thesis.
i have 2 max 485 ic connected to 2 pic micro controllers one controller transmits and another receives half duplex communication, both the controllers operate from different power supply the ground is not common. my doubt is in the tx side i have one max 485 with a and b bus terminals, and rx side i have one max 485 with a (...)
Hello, We intend to use LNK564 offline flyback controller for a flyback that switches off the 380VDC PFC bus. It will supply a secondary of 5V, 200mA, and will have a 13V bias winding which gives some 100mA to the primary side circuitry. Do you think we can do this via secondary side optopcoupler/TL431 regulation? (The opto transistor would
L6566B is a switch mode controller, the HV input connecting directly to the DC bus capcitor is only used for ?A currents during startup. The power flow is in fact through a (high frequency) transformer. Reading the IC datasheet thoroughly would reveal this. Presuming you have little experience in circuit design and probably no tools to safely t
Hi everyone, I'm trying to figure out my expected throughput using this fast ethernet controller and having a conceptual problem more than anything the part claims to be able to support 100Mb/sec communicati
Hi guyz, I am trying to run i2c on Tiva C TM4C123GXL board. After Initiating the communication, controller is always busy and does not come back in idle state. I don't know why buti am pretty sure, it is not sending the data to 24C04 because in "Master bus Monitor" register i am seeing the SCL and SDA always low. I wasted my whole day to (...)
hi, i got some doubts while reading CAN protocol. Every CAN controller along a bus will try to detect errors within a message. If an error is found, the discovering node will transmit an Error Flag, thus destroying the bus traffic. in this which error flag will send by node who detect the error.(active/passive/any other) In n
Hello I am working on inverter. I have some problems going with it. Here is the code I am using. I am giving pulses from an ATMEGA162 Micro controller. I am working on hardware. Final Hardware will be driven by another series of micro controller. So I am not very good with this code. I am applying +DC bus of 30V Problems I am (...)
Hallo Everyone, Have you ever programmed using PMP address? I want to control LCD driver ILI9325 using PIC32 starter kit. It is controlled using 16 bit PMP bus Here is the code: #include /* PIC32 Main Library */ #include /* PIC32 Prepheral Lib */ #include #pragma config FPLL
Use any differential bus transceiver such as SN75176 to convert into RS485 and use MAX232/ ICL232 to convert into
Hi I'm trying to read the temperature data from a sensor MCP9808 with a PIC12F683 through the i2c bus and then store it into the pic internal eeprom, working with mplab and XC8 C compiler. From the MCP9808 datasheet, these are the steps: i2c_start(); // send START command i2c_write (AddressByte & 0xFE); //WRITE Command (see Section 4.1
An ECC-capable memory controller as used in many modern PCs (mostly medium- to high-end workstation and server-class) can detect and correct errors of a single bit per 64-bit "word" (the unit of bus transfer), and detect (but not correct) errors of two bits per 64-bit word. Hamming code [
The 8051 is not designed for DMA. In order to do DMA, the processor needs to disconnect from the bus, and the 8051 is ALWAYS connected to the bus. I suppose you could add some external hardware to implement DMA, but that just sounds too messy. Why did you pick a processor that can't do what you want it to do? My advice would be to either select
The first computers used many different bus widths but the reason the numbers we use today were chosen is they are the minimum (and multiples of the minimum) of the size needed to hold a single decimal digit. The numbers 0 - 9 require four bits so that is what was chosen. The remaining bit combinations we used to extend 0-9 to 0-F making hexadecima
I haven't seen much critical signals here.....Crystal circuitry is routed OK. 50 Mhz controller with Rise and fall times of 3ns ..for most of the outputs you have resistors which will still decrease the rise/fall times. I am not sure about CAN bus....... I didn't see much problems for this.
I am doing a project about bus converter. What I am thinking is to to connect them on a micro-controller. Cause I don't any experience with them before. So I want to test whether it is work or not. Can anyone give me a idea about the circuit? And also what type of signal they are. I am going to use PC to simulate the signal. Thanks in ad
I havent really gone through the datasheet for LPC2148 but i can say that the chip hasnt got the built in CAN controller. You can use any CAN controller using SPI bus and connect to an CAN transceiver. Try using MCP2510 as CAN controller and TJA1042 as CAN transceiver. uc--> MCP2510 --> TJA1042. To view the CAN (...)
Dear all Salaam Is there anyone who could tell me why integrated VMEbus interface solutions which CYPRESS long time ago has developed a complete set for it (i.e.VIC068A and CY7C964 , ...) has been obsolete and there isn't any famous company that payed any attention to this nowadays popular bus controller? In addition the CYPRESS itself has (...)
can any one explain what is the difference between DMA and Central DMA. In the PC world, I believe "central" DMA refers to a single DMA controller chip (8237 I seem to recall) that is used for all DMA transfers on the bus not performed by the CPU. In a PCI system, due to the bandwidth of the various devices an
3 slaves or 100 slaves or 1 slave, it doesn't matter; the protocol is the same. The master sends out an address and only the slave whose address matches is allowed to drive the bus. This might help
Hi all, How to eliminate the turnaround cycles in Memories. WiKi: turnaround cycles are number of clock cycles it takes to change access to SRAM from write to read and vice versa. Thank you
i an working on a can project using mcp2515 as can controller. If i have get a bit error , or stuff error in bus than how my controller will detect that is an error and which type ? ( i wanna to know how controller behave when get an error an how could i know about error...) thank u in adv....
Hi, Can any body tell me what is energy bus. I am confused whether it is called as system or controller. I have gone through any document. They are mentioning that. It has 6 contacts. 2 for DC, 2 for supplying the DC to Components and 2 two CAN_H and CAN_L. Which indicates that, it works with CANopen Communication. But i am confused. What is ex
hi, i am working with can protocol using mcp2515 and at89s8252 as host controller....i read the documents ...i have a doubt on bus recovery....actualy after a node goes bus off how it is written in dacumnets that for recovery 128*11 consecutive recessive bits will send ...i mean who will send these bit and who will recieve...i m reall
Hello, For a mains LED lightbulb to be Triac dimmble, it must also not have large capacitance on the primary DC bus I presume?..or else it will ring with the filter inductor too much when the triac snaps on? eg pg 16 and 17 of this triac dimmable pwm controller datasheet shows small dc bus capacitance..
hi ALL can some one guide me to some projects using pic microcontroller and can bus plus some advanced can bus tutorials best regards controller Area Network Projects, Dogan Ibrahim
The following CAN bus webinar offers both streaming media and presentation slides: Introduction to controller Area Network (CAN) BigDog
Hi guys, I don't know the difference between these 4 terms. infact,I know what PCI card and PCI slots are, but I don't understand where the PCI bus is. if i considering these two cases that: 1-PCI controller is a PCI CARD (so not integrated) 2-PCI controller is INTEGRATED in Motherboard The PCI bus, is it (...)
Hi Can anyone please tell me whether a LIN transceiver(MCP2003) is required in an interface between PIC micro controller with EUART and LIN bus in a vehicle? If it is required, then what is the use of EUART in uc for interfacing with LIN bus? Can I use the regular UART?Will the whole circuitry compatible with K-Line communication? My (...)
Hi All, I'm looking for a USB Hub controller (High/Full speed, v2.0, 2+ ports) that supports configuration by acting as a SLAVE on either a I?C or SPI bus. There are lot of hubs out there that do have I?C or SPI port, but it is configured as a MASTER for accessing memory peripherals like EEPROMs. Does anyone know of such a IC that supports co
Hello guys, System controller is between CPU and system memory, IOs etc.?? As i think on SOC there is CPU connected to bus and all peripherals IPs are also connected to bus?? So where is system controller on SOCs?? Its playing some role of management of data movement where as CPU plays the role of data processing ?? (...)
General guidelines: First think to check on what Logic it is working.. second is to check the comparability between controller and encoder whether we can interface the bus directly or not.. If above two are ok then you can GPIOs as a interface if there is no dedicated interface for encoder..
If you have the command order and a timing diagram for the bus, it should be fairly straight forward. You just write some controller for the chip and away you go. If you dont know where to start, I suggest a book on digital logic design and a VHDL tutorial.
Hi I was reading about PMbus protocol and I found out that each manufacturer has it's own GUI and USB to I2C/SMbus/PMbus adapter. I was wondering sinse PMbus (Power Management bus) is kind of becoming an industry standard in Power Management, is there a general USB to (...)
You can change the PIC18F2550 operation from bus powered to self powered.
what happens 1553 bus controller fails and what is the soultion
Hi I'm trying to get a Simulink model for Bidirectional DC-DC converter to be used for battery charge and dis-charge through a dc bus, the control strategy used is a two-controller control; one is for generating the reference current and the other one is for control the voltage, so the battery is controlled to charge when there is sufficient dc bu
In regards to a CAN controller hardware implementation much of the arbitration and error handling is done at the hardware level. These advantages in hardware implementation of the CAN controller allow many microcontrollers with limited resources to effectively implement a CANbus. Microcontrollers (...)
SSP (Synchronous Serial Port) is the module. SPI is the protocol. A Synchronous Serial Port (SSP) is a controller that supports the Serial Peripheral Interface (SPI), 4-wire Synchronous Serial Interface (SSI), and Microwire serial buses. A SSP uses a master-slave paradigm to communicate across its connected bus. en.wikipe