Corelis introduced the Low Voltage Adapter for compatibility between Corelis’ boundary-scan controllers and low voltage JTAG designs operating below 2.5V. The Low Voltage Adapter is rated to support up to 100 MHz TCK speeds, employs ESD protection, and is capable of driving up to 90mA on its outputs. The Low Voltage Adapter is fully compatible with Corelis’ ScanExpress family of software products and comes complete with all necessary hardware and cabling. The adapter is available now with a list price of $1,500.
The Low Voltage Adapter provides the electrical and mechanical interface needed to connect a Corelis boundary-scan controller to a high density 60-pin Intel XDP (eXtended Debug Port) connector (Samtec BSH-030-01). The XDP port runs at about 1.0V and has 51-ohm pull-up/pull-down termination so the Low Voltage Adapter also provides the appropriate level translation and current drive capability. If the target UUT has an Intel XDP connector the user will need a Low Voltage Adapter to access the scan chain.
The XDP is a 60-pin, small form factor connector designed to extend JTAG by permitting two separate clock domain scan-chains to be implemented. Dividing the system scan-chains into two domains allows increased operating frequencies of the processor scan-chain by moving slower chipset JTAG agents to a completely separate clock domain.
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