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RZ/G1M/G1N Qseven Development Platform Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.9.4
JTAG Header (Optional)
A Standard 20-pin ARM JTAG Header is available in RZ/G1M/G1N Qseven carrier board for debug purpose. JTAG
signals from Qseven MXM connector is connected to JTAG Header (J16) through 3.3V level Buffer. This JTAG Header
(J16) is physically located at the top of the board as shown below.
As per Qseven specification version 2.0, Debug UART interface and JTAG interface are shared the same pins in
Qseven Edge connector and so either one interface only can be used at a time. By default, Debug UART (SCIF0) is
supported in the RZ/G1M/G1N Qseven SOM and so JTAG connector on RZ/G1M/G1N Qseven carrier board cannot
be used for debugging.
Figure 21: JTAG Header