NXP Semiconductors PXN2020 - 3.4.4 Port D Pins; 3.4.4.1 PD0 - GPIO (PD[0]); CAN_A Transmit (CNTX_A); 3.4.4.2 PD1 - GPIO (PD[1]); CAN_A Receive (CNRX_A); 3.4.4.3 PD2 - GPIO (PD[2]); CAN_B Transmit (CNTX_B)

Signal Description
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor 3-25
3.4.4 Port D Pins
3.4.4.1 PD0 — GPIO (PD[0]) / CAN_A Transmit (CNTX_A)
PD[0] is a GPIO pin. CNTX_A is the transmit output pin for the FlexCAN A module.
3.4.4.2 PD1 — GPIO (PD[1]) / CAN_A Receive (CNRX_A)
PD[1] is a GPIO pin. CNRX_A is the receive input pin for the FlexCAN A module. PD[1] can be
configured as a wakeup pin in the CRP_PWKENL register.
3.4.4.3 PD2 — GPIO (PD[2]) / CAN_B Transmit (CNTX_B)
PD[2] is a GPIO pin. CNTX_B is the transmit output pin for the FlexCAN B module.
3.4.4.4 PD3 — GPIO (PD[3]) / CAN_B Receive (CNRX_B)
PD[3] is a GPIO pin. CNRX_B is the receive input pin for the FlexCAN B module. PD[3] can be
configured as a wakeup pin in the CRP_PWKENL register.
3.4.4.5 PD4 — GPIO (PD[4]) / CAN_C Transmit (CNTX_C)
PD[4] is a GPIO pin. CNTX_C is the transmit output pin for the FlexCAN C module.
3.4.4.6 PD5 — GPIO (PD[5]) / CAN_C Receive (CNRX_C)
PD[5] is a GPIO pin. CNRX_C is the receive input pin for the FlexCAN C module. PD[5] can be
configured as a wakeup pin in the CRP_PWKENL register.
3.4.4.7 PD6 — GPIO (PD[6]) / CAN_D Transmit (CNTX_D) / TXD_K / I
2
C_B Serial
Clock Line (SCL_B)
PD[6] is a GPIO pin. CNTX_D is the transmit output pin for the FlexCAN D module. TXD_K is the
transmit output pin for the eSCI K module. SCL_B is the serial clock signal for the I
2
C B module.
3.4.4.8 PD7 — GPIO (PD[7]) / CAN_D Receive (CNRX_D) / RXD_K / I
2
C_B Serial
Data Line (SDA_B)
PD[7] is a GPIO pin. CNRX_D is the receive input pin for the FlexCAN D module. RXD_K is the receive
input pin for the eSCI K module. SDA_B is the serial data line for the I
2
C B module. PD[7] can be
configured as a wakeup pin in the CRP_PWKENL register.
3.4.4.9 PD8 — GPIO (PD[8]) / CAN_E Transmit (CNTX_E) / TXD_LK / I
2
C_C Serial
Clock Line (SCL_C)
PD[8] is a GPIO pin. CNTX_E is the transmit output pin for the FlexCAN E module. TXD_L is the
transmit output pin for the eSCI L module. SCL_C is the serial clock signal for the I
2
C C module.