EINDHOVEN, THE NETHERLANDS The JT 3710/USB DataBlaster is one of the first high-performance, Universal Serial Bus (USB)-powered JTAG controllers, according to JTAG Technologies B.V. The unit supports both test and in-system programming applications and can be used on the bench or in the field.
Housed in a small footprint (22 x 14 x 4 cm), the unit links to a PC or workstation via the 12-MHz USB interface.
To accommodate the high data rates and long vector lengths associated with flash and other in-circuit devices, the JT 3710/USB relies on a boundary-scan architecture and the company's proprietary chip set for real-time data decompression. Also, high-speed test-access port drivers and other facilities help boost JTAG-based flash ISP performance.
Thus, the controller can program an Intel 28F016 flash memory in less than 16 seconds. Test execution time, according to JTAG Technologies managing director Harry Bleeker, is typically a fraction of a second.
The controller's feature set includes sustained clock speeds to 25 MHz; a 32-Mbit flash image data memory; AutoWrite, which cuts cycle times and, hence, programming by two to three times over standard serial techniques; and gang programming of up to four targets.
The JT 3710/USB ranges from $8,000 to $9,500, depending on the form factor.
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EETInfo No. 612