Corelis PCIe-1149.1, Руководство пользователя

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Recommended Target Connectors A-1
Appendix A
Recommended Target Connectors
10-pin TAP Connector
The Boundary-Scan TAP is a well defined IEEE-1149.1-compatible electrical interface between
boundary-scan test equipment and the boundary-scan compatible devices in the user’s target board.
Boundary-scan based test equipment, such as the Corelis ScanPlus family of products, utilize a single
TAP to interface to the UUT. This section explains how to implement a TAP connector that is
compatible with most standard test equipment.
The TAP contains 5 signals: TCK, TMS, TDO, TDI and optionally TRST*. It also contains ground
signal(s). Corelis recommends the standard TAP connector shown in Figure A-1, which is widely
regarded as the industry standard. Note that each signal is terminated with a resistor (discussed
below) in order to improve noise immunity.
The connector on the user’s target should have a standard flat cable compatible pinout to match the
TAP connector described in Table A-1. Figure A-1 shows the top view of the basic target 10-pin
connector header (0.100 × 0.100 in. spacing):
2 GND
4 GND
6 GND
8 GND
10 GND TCK 9
TMS 7
TDO 5
TDI 3
TRST* 1
Figure A-1. Standard TAP connector (top view)