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ScanTAP Remote Intelligent Pod

Apply test vectors and/or ISP patterns to target boards with a variety of JTAG chain topologies.

The test patterns generated by the PCI-1149.1/Turbo controller are distributed to the target system either directly through ScanTAP 4, ScanTAP-8, and ScanTAP-32 pods. The ScanTAP-4, ScanTAP-8, and ScanTAP-32 pods can apply test vectors and/or ISP patterns to target boards with a variety of JTAG chain topologies. In the simplest case, the ScanTAP-4, ScanTAP-8, and ScanTAP-32 will provide the interface between the PCI-1149.1/Turbo controller and a target system consisting of a single JTAG Test Access Port (TAP). This would be the case where the target system consists of one JTAG chain and its single associated TAP.

If the board under test consists of groups that include multiple devices, each with their own respective TAP, then the ScanTAP-4, ScanTAP-8, and ScanTAP-32 allow for test vectors to be applied to each of the target TAPs individually, one TAP at a time, or jointly to all of the TAPs.

Note that the concept of concurrency here not only applies to the simultaneous application of test vectors and ISP patterns to each board but also applies to the simultaneous verification of each individual board. A failure on any of the individual boards will be properly logged and will not prohibit the continuation of testing on the remaining boards. The concurrent or gang mode of operation offers great performance increases when testing, in-system programming, and verifying multiple targets.

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Diagrams

Connecting ScanTAP-4 to a UUT with Four TAPs

Connecting ScanTAP-4 to Four Identical Boards

Connecting ScanTAP-32 to 32 Identical Boards

Related Controllers

NetUSB-1149.1/E	NetUSB-1149.1/SE	PCI-1149.1/Turbo
PCIe-1149.1	CPXI-1149.1/Turbo	ScanTAP-4/8/32 Remote Intelligent Pod

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