onTAP Series 4000 Application Notes

TAP CONNECT JTAG Controller Installation

onTAP JTAG Test & Programming Controller

Installation and Setup Instructions

for

Standard and Low Voltage Controller

Rev. VI

TAP CONNECT JTAG CONTROLLER

Table of Contents

About the TAP CONNECT JTAG Controller........................................................................... 1

TAP CONNECT Features ........................................................................................................... 2

Flying Lead and Ribbon Controller Connectors ................................................................. 3

Pin-out Assignments .................................................................................................................. 4

Installing the TAP CONNECT JTAG Controller ...................................................................... 5

Troubleshooting Controller Driver Issues …… …...…………………………………...………7

Setting up the TAP CONNECT JTAG Controller ................................................................... 9

Setting TCK Rate and Internal Vref ...................................................................................... 12

Creating Adaptor Files ........................................................................................................... 13

Self-Testing the TAP CONNECT JTAG Controller ............................................................... 19

A Pictorial Guide to Self-Test ................................................................................................. 21

Technical Support ................................................................................................................... 22

Hardware Warranty ................................................................................................................ 23

i

1

This guide is designed to assist with installation of the TAP CONNECT JTAG Controller. The set-up

instructions apply to both the standard TAP CONNECT Controller and the TAP CONNECT Low-

voltage Controller.

The TAP CONNECT JTAG Controller provides JTAG test and programming support for onTAP

Boundary Scan Software. It offers higher speeds and simplified operation in both single and multiple

chain (multiple Controllers) applications. The Controller may be used for the following applications:

JTAG Test, including memory and cluster test

Flash programming

FPGA, CPLD and PROM configuration

General purpose I/O

The TAP CONNECT JTAG Controller also provides the capability to run two chains at

speeds up to 30MHz.

The TAP CONNECT JTAG Controller includes either two ribbon cables for direct connection to Xilinx

style headers, or two flying lead connectors. The TAP CONNECT JTAG Controller attaches to a USB

port on a PC with a USB A-to-Mini cable..

When the license is embedded in the onTAP TAP CONNECT JTAG Controller

New Installations: Before installing the TAP CONNECT JTAG Controller, please install the onTAP

software. If the onTAP license is embedded in the TAP CONNECT JTAG Controller, it will be

automatically be detected.

Changing an Existing License Type: If the onTAP software license is being converted to an embedded

Controller license, it will be necessary to select License > Select Type of License from the onTAP

menu bar and set the license type to Embedded in JTAG cable.

Please note that the terms TAP CONNECT JTAG Controller and TAP CONNECT JTAG

Cable are alternately used. You may also see the term “Controller” variously referred to as a

cable, pod, module.

About the TAP CONNECT JTAG Controller

2

The TAP CONNECT JTAG Controller is available with a choice of fly leads, ribbon cable, Altera cable

adaptor, or custom adaptors. (Ribbon cable connector and flying lead pin assignments may be seen in

Figures 1-3, pp. 3, 4).

Supported on onTAP and Windows 7 - 10

Attaches to USB ports and hubs with off-the-shelf A-to-Mini USB cables

Dual channel

Internally powered at 3.3V from USB ports and hubs.

Includes adjustable internal voltage adjustment +1.8V - +5.5V and 0.92V—3.6V for low

voltage

Automatically senses and adapts to target I/O Voltages

Interfaces to devices operating at 1.5 to 5.5 VDC for standard Controller

Interfaces to devices operating at .092 to 3.6 VDC for low-voltage Controller

MAX INPUT VOLTAGE IS 5.5V for standard TAP CONNECT

MAX INPUT VOLTAGE IS 3.6V for low voltage TAP CONNECT

JTAG pin currents +/- 24mA

Adjustable TCK clock linearly from 280KHz to 15MHz and +28.8MHz

Drivers provided

Compatible with Xilinx flying wire leads and Xilinx Ribbon Cable

Cable adaptor available for Altera and other custom headers

JTAG pins compatible with the Xilinx Platform Cable USB, including TCK, TMS, TDI, and

TDO.

Tri-state, drive, and sense available on the INIT pin

Hot plug and play

Operates in onTAP single chain and multi-chain / multi-Controller JTAG applications

LED indicator shows status of both Vref and Controller voltages

Suspend state or loss of Vref tri-states outputs on all pins

Dimensions 3.54" x 1.97" x .94"

TAP CONNECT JTAG Controller Features

3

Flying Lead Pin Assignment & Ribbon Cable Connectors

Figure 2: Connectors Pin Description and diagram.

Figure 1: TAP CONNECT JTAG Controller features.

4

Pin Name

(JTAG)

Flying

Lead

Wire

Ribbon

Cable Description

TDI

10

Test Data In is the serial input data stream for JTAG operations

and is connected to the TDI pin on the first device in the JTAG

chain.

TDO

8

Test Data Out is the target serial output data stream for JTAG

operations and is connected to the TDO pin on the last device

in the JTAG chain.

TCK

6

Test Clock is the clock signal for JTAG operations and it is con-

nected to the TCK pin on all devices that share the same data

stream.

TMS

4

Test Mode Select is the JTAG mode signal that establishes ap-

propriate TAP state transition for the target devices which

share the same data stream.

INIT

14

Initialize: This pin in available for general purpose I/O, such as

TRST (Test Reset) control or WE (Write-Enable) for FLASH

Vref

2

Target Reference Voltage: This pin should be connected to a

voltage bus on the target system that supplies the JTAG inter-

face.

GND

1,3,5,7,9

,11,13

Digital Ground: All odd-numbered pins on the ribbon cable

should be connected to digital ground, reducing crosstalk to a

minimum.

Pin-out Assignments

Figure 3: Pin Description and Diagram for ribbon cable and flying leads.

5

Installing the TAP CONNECT JTAG Controller

Windows 7— Windows 10 Installation

Note: USB 2.0 only with Windows 7

USB 2.0, USB 3.0 with Windows 8 and Windows 10

The TAP CONNECT JTAG Controller attaches to a PC with a USB A-to-mini cable; connect the TAP

CONNECT JTAG Controller to the PC. If the OS is Windows 7, 8 or 10, the drivers will automatically

install.

The Controller includes two USB Ports: FT2232H Channel A and FT2232H Channel B. Drivers for both

channels have to be installed, as the screens will indicate.

Troubleshooting the Connector Driver Installation

The New Controller does not enumerate:

Windows 7, Windows 8 and Windows 10 automatically installs the drivers. However, should the TAP

CONNECT JTAG Controller not enumerate, open the Device Manager by going to:

Control Panel > Hardware and Sound > Devices and Printers > Device Manager

In the Device Manager your drivers should be found under Universal Serial Bus controllers as USB

Serial Converter A and USB Serial Converter B. Should you not see the drivers located here, look to

see if the Device Manager has the Controller listed under Other Devices. Select one of the two channels,

right click, select Update Driver Software. If necessary, repeat for the other channel.

onTAP does not recognize my Controller:

Please follow the steps outlined above. Odds are your Controller is not being detected because the

driver for the older onTAP USB Controller may be interfering with the new device.

6

When the TAP CONNECT Controller drivers are properly installed, they will appear as shown below in

the Device Manager > Universal Serial Bus controllers list. (Figure 4)

Installing the TAP CONNECT JTAG Controller (cont’d)

Figure 4: The new TAP CONNECT JTAG Controller drivers are installed.

The new drivers are called

USB Serial Converter A & B

7

Trouble-shooting Controller Driver Issues

Windows 7 with USB 2.0 and USB 3.0 ports:

Some users of FTDI silicon have reported that an FTDI device will not install if connected to a USB 3.0 port

on machines with the Windows 7 operating system and both USB 2.0 and USB 3.0 ports. This is partly re-

lated to some descriptors not being returned correctly or stored in unexpected registry locations. There are

a number of workarounds.

1. If the PC has a USB 2.0 port then the device may be installed by connecting to the USB 2.0 port and

then moving it to the USB 3.0 port after installation.

2. All TAP CONNECT JTAG Controllers have serial numbers – Dual FSC_USB_XXXXX. Ensure your de-

vice has a serial number (Figure 5).

Controller Serial Number

Figure 5: The TAP CONNECT JTAG Controller serial number shown in the cable

menu.

8

Location IDs Returned as 0 (zero):

Location IDs are not strictly part of the USB specification in the format provided by FTDI. The feature

was added as a additional option as a backup identifying opening ports by index, serial number or

product description strings.

When connected to a USB 2.0 port the location is provided on the basis of the USB port that the device

is connected to. These values are derived from specific registry keys. As the registry tree for third party

USB 3.0 host drivers is different than the Microsoft generic driver, the Location ID cannot be

calculated.

Another Possible Workaround:

If there are three BIOS settings for USB 3.0, AUTO (default), ENABLE and DISABLE, shown in the

machine’s BIOS please try selecting DISABLE. This must be accomplished by entering the machine

BIOS during boot up.

When the change is made and the machine has finished the boot process, then retry onTAP to

determine if the driver has properly installed. A location other than 0 should appear in the cable menu

(Figure 6).

Trouble-shooting Controller Driver Issues (cont’d)

Location other than 0

Figure 6: The TAP CONNECT Controller location other than zero (0) shown in the cable menu.

9

Setting up the TAP CONNECT JTAG Controller

Figure 7: Select Test and Programming Cables from the menu onTAP’s home page to begin the setup process.

Selecting the Cable

Open onTAP and from the menu bar, select Cables > Test and Programming Cables, as seen in Figure

7. This will open the Select a test/programming cable adapter screen (Figure 8), where the cable type will

be declared.

10

Setting up the TAP CONNECT JTAG Controller

Figure 8: The cable selection screen will display connected onTAP Controllers under Cable Names.

Selecting the cable (cont’d)

The cable selection screen defaults to the onTAP USB Cable, displaying any connected onTAP

Controllers, as seen in Figure 8 below, as well as the location.

11

Setting up the TAP CONNECT JTAG Controller

Selecting the cable (cont’d)

When the cable name is displayed, the USB Controller is enabled and onTAP can run existing SVF files

from any of the Test screens and from ProScan. Click OK.

If you have installed an older onTAP USB Controller and your computer did not automatically

recognize and update your new TAP CONNECT JTAG Controller, you may have to manually update the drivers.

This can be accomplished by opening the device manager and searching through the USB Devices

list for the FT2232C Channel A and Channel B, which is in the older onTAP cable. Once you locate

these devices, right click on them and select the option to automatically search for and install new

drivers.

Figure 9: When the TAP CONNECT JTAG Controller names are displayed, the

cable is enabled. Click OK

12

Setting TCK Rate and Internal Vref

Setting the TCK Rate

To change the TCK rate, move the slider in the onTAP USB Cable tab. The selected rate appears in the edit box to the left (Figure 13, p. 16). Note: some applications may run only at slower settings. The TCK rate for this cable is linearly adjustable from 285KHz to 15MHz, then it jumps to a maximum speed of 28.8MHz. Because each channel is independent, both channels will and can run at speeds up to 28.8MHz.

Cable Power and Internal Vref

The Controller is self-powered at 3.3V. However, if you are working with an application that does not

have its own voltage reference brought out to the JTAG connector, you can connect the Vref pin to the

Controller’s adjustable internal voltage source (Figure 10). This can be done on each of the channels.

By placing a shunt or jumper across the two voltage adjustment pins, the Internal Vref is activated.

Attach an oscilloscope or voltmeter across the JTAG Vref and GND pins and adjust the voltage with a

flat-head screwdriver to the desired voltage. (Refer to cable pin-outs diagram, pp 3, 4).

Voltage Adjust Screw (For use when not connected to a UUT’s

Vref)+1.8V—+5.5V Standard +0.92V— +3.6V low Voltage

Use a small flat-head screw driver to adjust.

Scope measurement here.

Internal Voltage Adjust Jumper Place a shunt on these two pins and a scope

on the pin marked with the yellow arrow.

Figure 10: Adjusting the voltage on the TAP CONNECT JTAG Controller

13

Adaptor Files

Creating Adaptor Files

Procedure to Associate SVF Files to the TAP CONNECT JTAG Controller Ports An adaptor file is created to match specific USB TAP CONNECT Controllers to specific JTAG chains in

test files. The output from the onTAP test development screen is an SVF file. An SVF test can include

one or more JTAG chains. Each of those JTAG chains must be associated with a channel port on the

TAP CONNECT JTAG Controller. Adaptor files are used to accomplish this. The adaptor files are created

using the following procedure:

1. Open the Test screen; from the Test screen, click on the Tap Connect button (Figure 11).

2. In the Select a test/programming cable adaptor screen (Figure 12), click on the project folder

icon for the drop-down menu which allows you to browse to your project folder. Select your

project and click OK .

3. With project folder loaded (Figure 13), first set the TCK rate using the slide control. The selected

rate appears in the edit box to the left. Next, note that all SVF test files appear in the upper left

pane of the Select a test/programming cable adaptor screen. Connected TAP CONNECT JTAG

Controllers appear in the lower left pane of the Select a test/programming cable adaptor screen.

4. To link an SVF file to a cable port (Figure 14), click on the SVF file name in the upper left pane,

then click on the appropriate cable and port in the lower pane. Click on Write Adaptors. Repeat

this process for the second cable port, if using.

5. Once the tests and cable ports are properly linked and the adaptor files have been written, you

will see a green check next to the SVF file in the upper left pane (Figure 15).Click OK to accept.

Note: An adaptor file is always required. If you use only Chain A or B, you do not need to

change the adaptor file if you swap Controllers. However, when using applications requiring more than one TAP CONNECT JTAG Controller, or if you use chains other than A or B, an adaptor file must be created if you swap out the Controller.

14

Creating Adaptor Files—Step 1

Figure 11: Access the Tap Connect menu from onTAP’s Test screen.

Open the Test screen, then click on Tap Connect to access the cable selection screen.

Select Tap Connect

15

Creating Adaptor Files—Step 2

In the Select a Test/Programming Cable adaptor screen, shown below (Figure 12), click on the project

folder icon for the drop-down menu which allows you to browse to your project folder. Select your project

folder and click OK

Figure 12: Locate your project folder from the Browse for folder window; click OK.

16

Creating Adaptor Files—Step 3

With the project folder loaded, first set the TCK rate using the slide control. The selected rate appears in the

edit box to the left (Figure 13). Next, note that all svf test files appear in the upper left pane of the Select a

test/programming cable adapter screen. Connected TAP CONNECT JTAG Controllers appear in the

lower left pane of this screen, as shown in the figure below.

Figure 13: Select TCK rate using the slide control. The upper left pane displays all the SVF test

files your project. The lower left pane displays connected TAP CONNECT JTAG Controllers

TCK Slide Control and TCK Rate

17

1. Click SVF file here.

To link an SVF file to a cable port, click on the SVF file name in the upper left pane (Figure 14), then click

on the appropriate cable and port in the lower pane. Repeat this process for the second cable port if using

both ports. Once you have made the SVF and cable port selection(s), note that your selection of a

cable number and port will appear in the middle column of the upper left pane (Figure 15).

Creating Adaptor Files—Step 4

Figure 14: Link the SVF file to a cable port by clicking on the SVF file name in the upper left pane, then click

the appropriate cable port in the lower left pane. Click Write Adaptors. Repeat for the next chain.

3. Click Write Adaptors.

Repeat for Channel B.

2. Match here.

18

Once the tests and cable ports are properly linked and the adaptor files have been written, you will see a green

check next to the SVF file in the upper left pane (Figure 15). Click OK to accept.

Creating Adaptor Files—Step 5

Figure 15: A green check next to the file name (upper left pane) lets you know your adaptor

files(s) has been properly written.

The cable name and port appear here.

The green check indicates the adaptor

file has been written. Now click OK.

19

Self-Test the TAP CONNECT JTAG Controller

Procedure to Self-Test

Included in your onTAP TAP CONNECT JTAG Controller kit, you will find:

( 1 ) TAP CONNECT JTAG Controller

( 1 ) USB A-to-Mini Cable

( 2 ) Two-pin Shunts

( 2 ) Xilinx Fly Leads or Ribbon Cable

To complete the test you will need a pin to connect TDO to TMS, TCK, TDI and INIT. Executing the

test with the Xilinx Fly leads is the easiest method of self-test. However, if using a ribbon cable, a

single wire jumper can be used.

The standard TAP CONNECT JTAG Controller has been factory set at 3.3V. However, should the test

not perform, please check the internal voltage source. To do this, install a shunt across the pins that

connect the internal voltage source to the channel. Set the internal voltage source to 3.3V by

adjusting the potentiometer and measuring the voltage between the internal voltage source pin (next

to the connector) and the GND pin (ref. Figure 10, p. 12).

Note: For the purpose of performing the Self-Test, the internal voltage source for the TAP

CONNECT LOW-VOLTAGE Controller should be set at 3.3V.

Self-Test Method

1. Power the TAP CONNECT JTAG Controller with the A-to-Mini USB cable.

2. Place the shunt on the two pins that connect the Internal Voltage Source to the Channel A

Vref pin (Figure 16).

3. Connect the fly leads to Channel A on the board.

4. Select the ‘TDO’ lead and place the pin into it.

5. Launch onTAP; select the Test page.

6. Once in the Test environment, on the bottom right side of the ‘Test’ page, you will see: Test

Your Cable (Figure 17).

20

Self-Test the TAP CONNECT JTAG Controller (cont’d)

7. Type A in the TAP edit box (Figure 17).

8. When the TDO lead with the pin is connected to TMS, select the TMS box in the ‘Test Your

Cable’ section (Figure 17) .

9. When the correct connector has been selected, the test will run automatically. If the loopback is

connected, then the TAP pin is working properly (Figure 18).

10. De-selecting the box will stop the test.

11. Perform this test on each of the leads (TMS, TCK, TDI, and INIT).

12. When Channel A has been tested, repeat these steps for Channel B.

Figure 16: TAP CONNECT JTAG Controller and pins that connect Voltage

Source to the Channel A Vref.

Place shunt on these two pins.

21

A Pictorial Guide to Self-Test

Figure 17: Setting up the loopback self-test.

Figure 18: Run the self-test by selecting each connection.

After selecting Test from the home page,

type A in the TAP edit box. This will allow

you test each connection on the A channel.

Once the correct connection has been selected,

the test will run automatically with the results

shown on the left. Repeat with each connection.

22

Technical Support and Help Assistance

Flynn Systems offers complete technical support with each onTAP software package.

Context Help

Context help is conveniently available throughout onTAP and the Help topics may be print-ed as required. Just press F1 on a selected page. In addition, several on-line tutorials are available, providing screen tours through onTAP with explanations.

One-on-One Technical Support Technical Support is easily accessible by email or telephone during business hours.

TEL: 603-598-4444 M-F 9:00 a.m. to 5:00 p.m. EST

FAX: 603-598-4111 24 hours, 7 days/week

Email: support@flynn.com 24 hours, 7 days/week

Web: www.flynn.com 24 hours, 7 days/week

Updates and Upgrades Unlimited access to updates and upgrades is also available to each onTAP customer with an active support contract. Users may download and install the latest onTAP program up-dates at their convenience by following this link: http://www.flynn.com/boundary-scan-jtag-support/updates

Because onTAP is developed entirely by Flynn Systems engineers, responsive adjustments

can be made as circumstances require, thus avoiding the cumbersome and time-consuming

task of asking third-party vendors to alter their software. Most technical support items are

addressed within twenty-four hours.

Full technical support is also available with each 30-day evaluation copy of the software.

23

Hardware Warranty

Each onTAP Boundary Scan TAP CONNECT JTAG Controller is intended for use solely with

onTAP Boundary Scan Software. Support for the onTAP TAP CONNECT JTAG Controller is

available only when said Controller is used in conjunction with onTAP Boundary Scan

Software and only when Support Agreements are active and current.

Each TAP CONNECT JTAG Controller provides JTAG test and programming support for

onTAP boundary-scan software. The TAP CONNECT JTAG Controller is intended to be

compatible at a pin level with the Xilinx Platform USB cable, simplifying selection of

attachment adaptors to a user’s target board. It attaches to the USB port on a PC with a

standard A-to-Mini USB cable.

The Software, License (including all documentation and materials), and hardware may not be

sublicensed, published, released or transferred to any other party by Customer without prior

written consent of Flynn Systems Corporation (FSC).

All onTAP-related hardware is under warranty for a period of 90 days after the date of

initial purchase. This warranty and FSC’s obligations are conditioned upon (a) the

Hardware being used only with the designated onTAP® Software and (b) there having been no

modifications to the Hardware by persons other than FSC.

Defective equipment returned to Flynn Systems Corp. during the warranty period will be

replaced or repaired at our discretion at no cost. Fees will be assessed for any and all

hardware failures that occur after the expiration of the warranty period. Fee structure for any

such replacement is at the sole discretion of Flynn Systems Corp. and its representatives.

Before new hardware will be issued, inoperative items must first be returned to Flynn Systems

Corp. or its representatives.