USB JTAG interface lead
Tagger is a USB device that connects a PC to a JTAG interface. Data throughput is a respectable 800KBits/second (many times faster than a parallel port). Works with targets of 3 to 5V.
Software interface is through a low level driver. Sample code exists to demonstrate the in-circuit programming of Flash devices directly connected to an Intel StrongARM and an AMD Alchemy (AU1000, 1100, 1500). Sample code also exists to program a small selection of PLDs.
- USB to JTAG interface lead
- High speed JTAG interface - average 800Kbit per second (several times faster than parallel connection)
- Works with target hardware between 3V and 5V
- Windows sample code for low level access to the JTAG chain
The BitBox USB to JTAG interface lead "Tagger" is a device which allows you to connect a USB port to a JTAG chain on your target hardware. With the Tagger you can in-circuit program flash memories connected to a JTAG enabled microprocessor already fitted to your PCB. The Tagger can also be used to in-circuit program PLD and FPGA devices.
Hardware
Power for the Tagger is derived from the USB bus. Power for the target driver is derived from the target hardware. The Tagger will work with hardware running at between 3 and 5V.
Supplied in the box
- BitBox "Tagger" device
- USB cable
- Sample 10 way IDC cable
- CD-ROM containing user software and documentation (updated CD-ROM contents is available for download on this web site)
Software
Documentation for the Windows DLL is provided to allow you to drive the JTAG chain at a low level.
(We are not supplying software to perform in-circuit test. We are providing a software interface to allow this to be done.)
