Freescale Semiconductor TWR-K64F120M, Быстрый старт, Страница: 9 / 12

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Jumper Option Setting Description
General-
Purpose TWRPI
V_BRD Power
Enable
J6
ON
Connect onboard 1.8 V or 3.3 V supply (V_BRD) to TWRPI 3 V
power (GPT_VBRD)
OFF
Disconnect from board 1.8 V or 3.3 V supply (V_BRD) to TWRPI
3 V power (GPT_VBRD)
GPIO
RESET_OUT_B
Connection
J1
1–2 Connect PTB7 to RESET_OUT_B signal
2–3 RESET_OUT_B signal resets the target MCU
Target MCU
UART1_RX
Output Selection
J10
1–2 Connect MCU’s UART1_RX to OpenSDA virtual COM RX port
2–3 Connect MCU’s UART1_RX to primary Elevator (A41) UART0_RX
Target MCU
UART1_TX
Output Selection
J15
1–2 Connect MCU’s UART1_TX to OpenSDA virtual COM TX port
2–3
Connect MCU’s UART1_RX to primary Elevator (A42) UART0_RX
SWD_CLK_
TGTMCU
Output Selection
J39
ON
Enable the SWD_CLK_TGTMCU connection between the
OpenSDA and target MCU
OFF
Isolate the SWD_CLK_TGTMCU connection between the
OpenSDA and target MCU
Reset Selection
for SW2 Reset
Button
J16
1–2 Connect the reset button to target MCU before level shifter
2–3
Connect the reset button to target MCU without passing through
level shifter