FAQ page for the CFM Disconnect board


Q: Which instruments or other 3rd party devices are supported by this CFM?

A: This CFM was designed for some JTAG tools, it has the following pin compatible connectors available:

- 14pin Xilinx 2mm header (dual row)

- 9pin Xilinx header (single row)

- 10pin Altera Byte blaster header

The newer Rev-B also includes a 20pin JTAG interface for up to 2 units.

Although the pinout is fixed, practically any instrument can be connected, provided a fitting adapter cable is made.


Q: Are all headers installed?

A: No, the standard version of this CFM comes with two of the 20 pin JTAG interface headers installed. This is the most flexible use of the signals And also is the most popular. It was the reason for the newer revision, and we kept the original headers in the design so users have the option to install headers for the respective interface if they choose to do so.


Q: There are four direct connect and four MUXed signals on the CFM, are both used?

A: Yes, the 'primary' connector is routed to the direct signals with some additional signals routed to the MUXed ones.


Q: Are the direct signals wired directly from the JTAG connector to the interface or is there a way to disconnect the signals?

A: This CFM has relays, which disconnect (NO) the 4 direct signals, those signals can be switched (thru another relay) to be connected to the MUXed signals.


Q: Are there other JTAG interface (header) pinouts available?

A: This CFM revision has the pinouts available as stated above. Changing to another pinout is possible, just ask by sending us your specs.


Q: Is there a discount of multiple units?

A: Yes, we offer discounts on order of 4 or more units. Contact us and we can send you details.


Q: Can I just buy one unit?

A: Yes, one unit currenlty cost $475.00 (USD) Plus $25 for S/H. click here to place the order


Q: How long does it take for the shipment to arrive?

A: Allow 2-3 weeks for delivery.


Q: What is in the box?

A: The box contains the Disconnect-CFM-JTAG board.


Q: Do you ship international?

A: Yes, add one more week for delivery, Contact us for shipping charges.


Q: Is it made in the USA?

A: Yes, both the PCB is made in the USA and it is assambled in the USA.


Q: Does this CFM carry a warranty?

A: Yes, it has a 30 day warranty on any defect.


Q: What type of payment do you accept?

A: We currently accept the PayPal system. It allows you to use your ATM card, Credit Card or your bank account.



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