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25 Threads found on Jtag Timing
Does any one have any material on jtag timing and how to interpret the waveforms? Thanks.
Hallo professionals! You have two boards: one is PMC mezzanine board and this board is placed at second (carrier board). You want use jtag interface between this two boards. Question is: Is signal TDI input or output at carrier board? At PCI and PMC standards I didn`t find explicit description of direction this signals. Thank you very m
hi my friends A basic question comes to my mind ....would anyone please tell me more about accurate timing and voltage level during CPLD programming for all of pins included: IO+jtag+VCCINT+VCCIO+GND
Hi, In P&R, the jtag (boundary) cells are always placed as close as possible to the I/O pad. This make sense as the jtag cell are connected to the pad. My question is beside connectivity requirement, is there other requirement that make it important to place the jtag cell as close to the IO pad as possible? Is there (...)
Hi my friend's Can anyone tell about detailed sequence and timing in xilinx jtag progrmmer and iMPACT software? I would like to know iMPACT programming protocol which interact main board via programmer . Thanks ahead
Hi, When doing static timing analysis, there are NORM, SCAN, BIST, jtag modes. What are the differences among them? Are all the four modes needed? Best Regards, newcpu
I'd like to make my own Atmel SAM ARM programmer using jtag interface. I have documentation concerning jtag standard, AT91SAMXXX pdf etc. In the chapter "Serial Fast FLASH Programming" i found some information about how to program flash via jtag but the information seems to be incomplete. There are, however, some descriptions what commands (...)
embedded memories? let's say I have a serial embedded memory in test mode, which is controlled solely via jtag->TCB or/and a TPR. The memory's timing waveforms is custom-designed with verilog behavior model. How do they generate jtag waveforms automatically to access the memory? Are there such tools as to digitize the simulated waveforms (...)
Hello Treqer, We met before on this thread. Sorry you are having troubles. THe design is not entirely clear to me, but buffering signals introduces a host of problems. Buffering/Driving any signal (jtag or functional) over a long distance and having multiple end-points can introduce ringing/overs
Hello, I'm trying to write jtag application for Xillinx chips. I have PROM and Spartan3 in chain and I wanted to do simple thing first, go to Shift-IR TAP state and send BYPASS for PROM and IDCODE for FPGA. Then I wanted to go to Shift-DR and get IDCODE value of FPGA. Something doesn't work correct and I have enquiry. Is there a requirement f
According to this fact that the jtag is a standard protocol, why does each vendor have its own USB-jtag device? If we have a USB to jtag converter, why don't we use it for every jtag compatible device? In theory it is certainly possible, there are several "Universal jtag programmer/debuggers (...)
I found jtag XC95XXX timing diagram. :)
Hi ,all I want to insert jtag into my design,using Synopsys's design Compile. This is my first design ,so ,there are some problems. A: How to write the constraint script when synthesis the TOP-design including BSD and core_logic. B: How to verify the design ,and which tools are needed. C:How to set the timing attribute .
you may select the physical compile! It is a useful tool! and your flow, the order shall be as follow: 1.Internal scan inserting.(full-scan) 2 Internal scan ATPG. 3Boundary scan ATPG. 4Boundray scan inserting.(jtag) 5 synthesis to get a fulll netlist. 6. Initial placing and routing to get the net delay imformation. 7 timing analysis
Hi, jtag is standard but every vendor use their own cables and conector mappings. Also different cables have different inducatance, capacitance and timming parameters. Input and output logic levels are also important esspecially in 3.3V and 5V mixed designs. Programming software assumes some timing parameters and appropraite level conversi
verification is the process of finding funciontal / logic bugs in your design. This is typically done by running simulations. While testing refers to finding manufacturing bugs in your design this is done after the chip is manufacted to find bugs like cracked metal layers etc. this is done by a tester machine by probing the jtag ports
PCI Local Bus Technical Summary Table of Contents 1.0 PCI Overview 2.0 PCI Documents 2.1 PCI Specifications 2.2 PCI Books 3.0 PCI Bus Protocol 4.0 PCI Signal Descriptions 4.1 System Pins 4.2 Address and Data Pins 4.3 Interface Control Pins 4.4 Arbitration Pins (Initiator Only) 4.5 Error Reporting Pins 4.6 Interrupt
This is flow: After inserted jtag I run command as follow: read_file -format verilog test_gpio_top_sys.v current_design test_gpio_top set_dft_signal -view existing_dft -type tdi -port i_jtag_tdi set_dft_signal -view existing_dft -type tms -port i_jtag_tms set_dft_signal -view existing_dft -type tck -port (...)
looks like you can use jtag for programming because you have jtag on connector (you do not have isp pins on connector). btw. i do not see any xtal for mcu. your rs232 would not work correct without xtal timing
I'm using two Strata Flash (x16), connected in parallel to make it x32 bit interface. Processor i'm using is MPC8358E. For board bring-up i'm using Abatron's BDI-2000 jtag debugger. After Processor Initialization, I've tested DDR-II and NOR Flash (mentioned above) using std memory tests and it has Passed. But when i try to download u-boot.bin Fl
Hi everyone. I've now worked with FPGA's for about 2 weeks, and I would like to make a board my self. It doesn't have to be a FPGA board, it can be a CPLD board too. Currently I've got Digilent's Basys2 board, and the Digilent FullSpeed USB jtag programmer. 1. The thing I want to know is if anybody knows if it's possible to use this USB jtag p
Hi everyone, i am designing xilinx USB jtag programmer. in my designing CY7C68013A and XC2C256 is used. i red this data sheet here address bus and control signal pin are available it need length matching ??? 1.please anybody explain what is length matching ?? uses of length matching
Hello, I have ByteBlaster MV from Altera,Its not working.The error in quartus is " Unable to Scan the chain" I suspect the problem is in jtag FRC Cable(10 pin). Can any one tell that what is the ideal length of this cable,Because i am trying to increase the length upto 26-28cm. Please suggest me whether i am doing correct or not. Regards
MMMC : Modes can be as many as design support. For ex , Functional mode, DFT modes like, TFT, Shift mode, shift capture mode etc. functional modes depends on , how many modes need to test with different case analysis. We will try to squeeze the functional mode to 1 to reduce the run time. The other modes may be like PBIST or MBIST mode. It can b
hello 1) For understanding,how we get the hold violation,you need to do some timing analysis on paper.Just do one thing,take any circuit with io pads,and do the jtag on paper with timing analysis,you will get the answer of your question. 2) How can you connect directly TDI to TDO pin? for that we required some logic in between TDI and TDO. (...)