25 Threads found on edaboard.com: Jtag Timing
Does any one have any material on jtag timing and how to interpret the waveforms?
ASIC Design Methodologies and Tools (Digital) :: 07.06.2008 01:34 :: sparso :: Replies: 2 :: Views: 6283
be more specific on jtag timing are u trying to run an external jtag chain ?
are you trying to initiate a jtag scan internally?
first one need a esternal jtag controller in which you can set appropriate frrequency in the range 100Hz to all the way up to 2M provide you interconnect system has got some good (...)
Professional Hardware and Electronics Design :: 16.06.2008 07:48 :: synq :: Replies: 6 :: Views: 1925
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
PLD, SPLD, GAL, CPLD, FPGA Design :: 11.03.2005 04:09 :: vaf20 :: Replies: 3 :: Views: 692
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 (...)
ASIC Design Methodologies and Tools (Digital) :: 02.08.2005 00:04 :: leeenghan :: Replies: 4 :: Views: 1009
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 .
PLD, SPLD, GAL, CPLD, FPGA Design :: 29.10.2005 11:06 :: vaf20 :: Replies: 2 :: Views: 1194
-- Normal mode, should be normal "function" mode.
-- Scan mode, internal scan, shift/capture
-- BIST mode, built-in self-test maybe for Memory
-- Boundary scan mode
What are the differences among them ?
--> They have defined differnet op
ASIC Design Methodologies and Tools (Digital) :: 22.03.2006 03:48 :: joe2moon :: Replies: 3 :: Views: 1702
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 (...)
Microcontrollers :: 12.09.2007 12:54 :: kekon :: Replies: 2 :: Views: 1491
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 (...)
ASIC Design Methodologies and Tools (Digital) :: 23.03.2010 03:58 :: kel8157 :: Replies: 0 :: Views: 548
Good afternoon everyone!
I have a problem with jtag. My gear consists of up to 32 cards, each FPGA and the configuration ROM. All devices connected to jtag. Tms and tck signals pass through the buffer. . Buffer is designed so that each of its output is connected to 4 board (8 jtag devices). Up to 16 cards programmed (written to ROM) is not (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 12.04.2011 03:54 :: treqer :: Replies: 4 :: Views: 994
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
PLD, SPLD, GAL, CPLD, FPGA Design :: 13.11.2012 08:05 :: daniel488 :: Replies: 0 :: Views: 219
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 (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 04.01.2013 04:02 :: bigdogguru :: Replies: 4 :: Views: 270
I found jtag XC95XXX timing diagram.
PLD, SPLD, GAL, CPLD, FPGA Design :: 03.10.2003 03:41 :: petarpav :: Replies: 2 :: Views: 859
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 .
ASIC Design Methodologies and Tools (Digital) :: 01.12.2004 11:31 :: rocky77 :: Replies: 0 :: Views: 498
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
ASIC Design Methodologies and Tools (Digital) :: 17.01.2005 02:26 :: visualart :: Replies: 4 :: Views: 853
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
PLD, SPLD, GAL, CPLD, FPGA Design :: 28.04.2005 21:49 :: Hero :: Replies: 3 :: Views: 1836
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
ASIC Design Methodologies and Tools (Digital) :: 09.05.2006 12:56 :: semiconductorman :: Replies: 8 :: Views: 454
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
PLD, SPLD, GAL, CPLD, FPGA Design :: 07.09.2006 23:27 :: IanP :: Replies: 4 :: Views: 690
This is flow:
After inserted jtag I run command as follow:
read_file -format verilog test_gpio_top_sys.v
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 (...)
ASIC Design Methodologies and Tools (Digital) :: 14.06.2007 06:59 :: uptofly :: Replies: 0 :: Views: 672
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
Microcontrollers :: 25.02.2009 20:22 :: cancel :: Replies: 3 :: Views: 11738
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
Professional Hardware and Electronics Design :: 12.07.2010 12:36 :: vagraharkar :: Replies: 0 :: Views: 870
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
PLD, SPLD, GAL, CPLD, FPGA Design :: 21.09.2010 17:53 :: mindthomas :: Replies: 4 :: Views: 850
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
PCB Routing Schematic Layout software and Simulation :: 07.03.2011 01:25 :: kabaleevisu :: Replies: 1 :: Views: 968
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.
PLD, SPLD, GAL, CPLD, FPGA Design :: 16.03.2011 04:48 :: kirangowle :: Replies: 4 :: Views: 406
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
ASIC Design Methodologies and Tools (Digital) :: 02.04.2012 08:39 :: sam536 :: Replies: 3 :: Views: 531
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. (...)
ASIC Design Methodologies and Tools (Digital) :: 18.02.2013 03:37 :: maulin sheth :: Replies: 3 :: Views: 141