Texas Instruments Stellaris LM3S9D90, Руководство пользователя

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Stellaris® LM3S9D90 Evaluation Kit User’s Manual
July 5, 2011 15
applies when the ICDI is used as the JTAG/SWD debugger and LED D2 (DEBUG ACTIVE) is lit
on. In this case only one of the two connectors J1/J3 should be used.
The ICDI can also be used as a 20-pin to 10-pin adapter for external JTAG debuggers. Note that
the DEBUG ACTIVE LED must be off before connecting any external JTAG debuggers.
Figure 2-6. JTAG/SWD Connector J1
Figure 2-7. JTAG/SWD Connector J3
Pushbutton
Pushbutton SW1 (RESET) is provided to manually generate the SRSTn signal to the target
device. The SRSTn signal can also be generated under program control.
PWR/UART
The PWR/UART connector J2 connects to the EK-LM3S9D90 evaluation board with a ribbon
cable and provides 5 V power and a virtual communications port connection. This is a 2 x 4 fine
pitch (0.050”) connector, see (Figure 2-8) for signal definition. Signals DBG1/DBG2 are reserved.
Figure 2-8. PWR/UART Connector
TMS/SWDIO
TCK/SWCLK
TDO/SWO
TDI
SRSTn GND
GND
GND
VSENSE
N/C
1 2
9 10
In
Out
Out
Out
In
I/O
TMS/SWDIO
TCK/SWCLK
TDO/SWO
TDI
SRSTn
1 2
19 20
GND
GND
GND
GND
GND
GND
GND
GND
GND
N/C
N/C
N/C
N/C
N/C VSENSE In
Out
Out
Out
In
I/O
VCP_TX
VCP_RX
GND
GND
DBG1
1 2
7 8
DBG2
5V 5V
In
Out
Out
Out