XJTAG Introduces XJQuad Four-port JTAG Adaptor

XJTAG introduced their XJQuad multiport JTAG testing solution. XJQuad is a cost-effective four-port JTAG adaptor targeted at manufacturers. It uses a single USB 2.0 port on a PC to provide high speed JTAG access and can simultaneous test four circuit boards, each of which can be provided with up to four JTAG Test Access Ports. XJQuad enables engineers to test boards together in batches, or to run the four ports independently. XJQuad is ideal for connection testing, in-system programming, non-JTAG device testing, and serial number handling.

XJTAG XJQuad multiport JTAG testing solution

XJQuad is a 4-port version of the XJLink2 USB-to-JTAG controller. It includes XJRunner software for running XJDeveloper test systems. With a range of special features it is particularly suitable for manufacturers. Each of the four ports has a high-speed interface which can be connected to up to four TAPs on each Unit Under Test (UUT).

XJQuad Features

  • Tests 4 boards simultaneously
  • Production run-time environment for XJDeveloper tests
  • Simple, controlled test execution
  • Handles a variety of serial number systems
  • Log files for audit trail
  • Optional restricted access for test-only users
  • Two modes for simultaneous board testing
  • Board statistics and fault trend analysis

Hardware Features

  • Up to 4 TAP connections to each of 4 UUTs
  • Handles different cable and board configurations
  • TCK clock frequencies up to 166 MHz
  • Two different voltages can be configured, from 1.1 V to 3.3 V in 0.1 V steps
  • Button to start test
  • Visual indication of test status
  • High speed USB 2.0 interface, backwards compatible with USB 1.0 and 1.1
  • Adjustable JTAG signal termination
  • Spare pins on the JTAG connectors can be used in place of the button or to indicate the test status
  • Pins can also be used as general purpose I/O during testing, for example for fast Flash programming
  • Automatic signal skew control
  • Can supply power to target boards (3.3 V, <100 mA)
  • Built in voltage meter on all I/O pins
  • Voltage input: Min 0, Max 5 V
  • Frequency counter on all I/O pins
  • Frequency input: Min 1 Hz, Max 200 MHz
  • Selectable measurement period of 1 ms, 10 ms, 100 ms, 1 s, 10 s
  • JTAG signals are +5 V tolerant

More info: XJTAG