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lishaowen

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[求助] ISE下载问题求助

在iMPACT下载的时候遇到的问题,以下是什么意思,该怎么做?求高人指点!!
Chains containing third-party devices:
1. Many third-party devices are not boundary scan-compliant and might break the JTAG chain. Check the "Design Warning" section in the BSDL file for the third-party device to learn about known problems with these parts.
2. Considerations for the optional /TRST signal:
Many third-party devices implement the optional /TRST signal. Ensure that the /TRST signal is High at all times when you attempt to perform JTAG operations.
       For example, many Texas Instruments DSPs have a pull-down resistor on the optional /TRST signal, which causes these devices to remain in reset. The /TRST signal should have a pull-up resistor, which will prevent it from breaking the JTAG chain if left unconnected.
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