Intrinsyc Open-Q 835, Руководство пользователя

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Open-Q™ 835 Development Kit based on the Snapdragon™ 835 (APQ8098) Processor User Guide Version 1.0
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Copyright Intrinsyc Technologies Corporation
Figure 10 J2102 Debug UART over USB
The UART connection used on the Open-Q 835 is a USB micro B connector (J2102). This
debug UART is available over USB via the FTDI FT232RQ chip on the carrier board. To get
the serial terminal working with a PC, user needs to ensure that the appropriate FTDI
drivers are installed.
3.8.8 JTAG Header J2101
Figure 11 J2101 JTAG Header
This connector provides a JTAG interface to the main processor by which users can
connect a JTAG (Lauterbach / USB Wiggler) 20 pin ARM JTAG.
NOTE: It does not provide software support for JTAG
Table 3.8-8 J2101 JTAG Header Pin out
Description Signal Pin NO Description Signal Pin NO
GND GND J2101[2] JTAG Power detect JTAG_PWR J2101[1]
GND GND J2101[4]
Target RESET_N
signal
TRST_N J2101[3]
GND GND J2101[6] TDI Signal (Target
DATA IN) TDI J2101[5]
GND GND J2101[8] TMS Signal TMS J2101[7]
GND GND J2101[10] TCK Signal TCK J2101[9]
GND GND J2101[12] JTAG_RTCK
signal
JTAG_RTCK J2101[11]
GND GND J2101[14] TDO Signal (Target
Data Out)
TDO J2101[13]
GND via
4.7KΩ pull
down
GND J2101[16] Source RESET_N
signal
SRST_N J2101[15]
GND GND J2101[18] NC NC J2101[17]
JTAG detect N signal DET_N J2101[20] GND via
4.7KΩ pull
down
GND J2101[19]