TWR-KV31F120M Tower Module, User’s Guide, Rev. 0, 03/2014
Freescale Semiconductor Inc.
7
Hardware description
6.4.2
Cortex debug connector
The Cortex Debug connector is a 20-pin (0.05") connector providing access to the SWD, JTAG, cJTAG,
and EzPort signals available on the KV31 device. The pinout and KV31 pin connections to the debug
connector (J19) are shown in
Table 2
.
Table 2. Cortex debug connector
6.5
Accelerometer plus Magnetometer
An FXOS8700CQ 6-Axis Digital Sensor Acceler Magnetometer is connected to the
KV31F512VLL12 MCU through an I
2
C interface (I2C0) and GPIO/IRQ signals (PTD0 and PTE24).
Pin
Function
TWR-KV31F120M connection
1
VTref
3.3 V MCU supply (MCU_PWR)
2
TMS / SWDIO
PTA3/UART0_RTS_b/FTM0_CH0/
JTAG_TMS/SWD_DIO
3
GND GND
4
TCK / SWCLK
PTA0/UART0_CTS_b/FTM0_CH5
/JTAG_CLK/SWD_CLK/EZP_CLK
5
GND GND
6
TDO/SWO PTA2/UART0_TX/FTM0_CH7/
JTAG_TDO/TRACE_SWO/EZP_DO
7
Key
–
8
TDI PTA1/UART0_RX/FTM0_CH6/
JTAG_TDI/EZP_DI
9
GNDDetect PTA4/FTM0_CH1/MS/NMI_b/
EZP_CS_b
10
nRESET RESET_b
11
Target Power
5 V supply (via jumper J20)
12
–
NC
13
Target Power
5 V supply (via jumper J20)
14
–
NC
15
GND
GND
16
–
NC
17
GND
GND
18
–
NC
19
GND
GND
20
–
NC
