Please Log in (Forgot) or Register boundary scan jtag test
Boundary Scan JTAG


» RCT-II Brochure

» Eclipse Family Overview » Test Development
» Manufacturing Test
» Diagnostics and Repair » RCT-II Overview
» CompactPCI PCB Test

DUT Interfaces:


» Chip Test and Debug
» CompactPCI
» 64 Bit PCI
» Custom

 

 

 


CompactPCI DUT Board

The CompactPCI DUT board interfaces the RCT-II to any Compact PCI daughter board.  The cPCI DUT interface enables more fault coverage than boundary-scan alone.  With boundary-scan only,  critical signals from the cPCI bus connect to BGAs on the cPCI card go untested.  Digital driver/sensors are needed on the I/O connector in order to test for opens to BGAs during boundary-scan tests. A 4 wire test only provides IC to IC interconnects leaving out critical tests for signals going off-board.  Intellitech's ATPG tool will produce test vectors with both serial patterns and direct digital I/O patterns to fully test both boundary-scan and edge connector nets.

"We're going to just plug the cPCI card into the backplane and use a 1149.1 header to test our cards"

On the surface this may sound like a good idea, however, any cPCI card nets that go to the backplane will not be tested for opens.   Further fault coverage is suppressed if the cPCI system is operational.  During interconnect testing the signals connected to the backplane will not be tested for shorts or opens since the functional operation will interfere with the test.   Only the RCT-II and cPCI DUT card can give you full interconnect testing without building an ICT fixture.

Using the cPCI backplane also can be a problem as nothing will limit the current to the cPCI board.  Critical faults can be present that will not become apparent until 1149.1 is running.  The RCT-II power supplies can current limit, protecting your PCB from undue damage for simple solder faults.

There are two available slots, the left slot is used for the cPCI card and the right slot is used for the optional transition card.   The cPCI DUT card is essential for testing interconnect between cPCI card and it's associated transition I/O card.   Many times designers will use the 'user defined' pins of the cPCI card-Transition card to route their scan-chain to the transition card.  The DUT card and RCT-II fully support this.

When a transition card is not used in the transition card slot, the RCT-II I/O that go to that interface can be used as additional tester pins through cabling to the cPCI card .

 The standard CompactPCI interface safely powers the board, connects digital I/O to the daughter cads cPCI bus and drives the 1149.1 signals on the dedicated cPCI TAP pins. (large photo)

Compact PCI DUT