ARM ARM DUI 0224I manual Jtag, USB debug port

Models: ARM DUI 0224I

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Signal Descriptions

A.13.2 JTAG

Figure A-16 shows the pinout of the JTAG connector J31 and Table 3-25 on page 3-98 provides a description of the JTAG and related signals. All JTAG active HIGH input signals have pull-up resistors (DGBRQ is active LOW and has a pull-down resistor).

Note

The term JTAG equipment refers to any hardware that can drive the JTAG signals to devices in the scan chain. Typically this is RealView ICE or Multi-ICE, although hardware from other suppliers can also be used to debug ARM processors.

3V3 nTRST

TDI

TMS

TCK

RTCK

TDO nSRST

DBGRQ DBGACK

1 2

19 20

3V3 GND GND GND GND GND GND GND GND GND

Figure A-16 Multi-ICE JTAG connector J31

A.13.3 USB debug port

Figure A-17 shows the signals on the USB debug connector J30. USBDP and USBDM are the positive and negative USB data signals.

GND 4

3USBDP

VCC 1

2USBDM

Figure A-17 USB debug connector J30

A-36

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ARM DUI 0224I

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Image 304
ARM ARM DUI 0224I manual Jtag, USB debug port