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How is the target reset of the JTAG connected correctly? |
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Both signals, the ARM20 features two reset signals: The test reset and the system reset are available and . Both have to be connected . The test reset has to be connected to the JTAG_TRST and the system reset JTAG_SRST to the netx to netx 90.
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The MIPI20 adapter has only a RST one RESET- signal available. Because the JTAG_TRST resets the debug domain only, the TRST is not connected.The JTAG_RST The RESET- pin of the MIPI 20 connector is connected to the system reset (analog to JTAG _ARM20 SRST-) to the netx 90 RST_IN_N pin. Because the netX 90 JT_TRST signal resets only the JTAG debug domain, this pin remainbs unconnected in case of JTAG MIPI 20 connector.
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The following table illustrates the pinning of the debug connectors.
Converter for ARM 20 to Coresight 20 JTAG:See http://www2.lauterbach.com/pdf/app_arm_jtag.pdf LA-3770 Converter ARM-20 to MIPI-10/20/34 JUMPER/Solder Bridges might have to be changed to: CORESIGHT-20-JTAG |
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