Signal Description
PXN20 Microcontroller Reference Manual, Rev. 1
3-26 Freescale Semiconductor
3.4.4.10 PD9 — GPIO (PD[9]) / CAN_E Receive (CNRX_E) / RXD_L / I
2
C_C Serial
Data Line (SDA_C)
PD[9] is a GPIO pin. CNRX_E is the receive input pin for the FlexCAN E module. RXD_L is the receive
input pin for the eSCI L module.SDA_C is the serial data line for the I
2
C C module. PD[9] can be
configured as a wakeup pin in the CRP_PWKENL register.
3.4.4.11 PD10 — GPIO (PD[10]) / CAN_F Transmit (CNTX_F) / TXD_M / I
2
C_D
Serial Clock Line (SCL_D)
PD[10] is a GPIO pin. CNTX_F is the transmit output pin for the FlexCAN F module. TXD_M is the
transmit output pin for the eSCI M module. SCL_D is the serial clock signal for the I
2
C D module.
3.4.4.12 PD11 — GPIO (PD[11]) / CAN_F Receive (CNRX_F) / RXD_M / I
2
C_D
Serial Data Line (SDA_D)
PD[11] is a GPIO pin. CNRX_F is the receive input pin for the FlexCAN F module. RXD_M is the receive
input pin for the eSCI M module.SDA_D is the serial data line for the I
2
C D module. PD[11] can be
configured as a wakeup pin in the CRP_PWKENL register.
3.4.4.13 PD12 — GPIO (PD[12]) / eSCI_A Transmit (TXD_A)
PD[12] is a GPIO pin. TXD_A is the transmit output pin for the eSCI A module.
3.4.4.14 PD13 — GPIO (PD[13]) / eSCI_A Receive (RXD_A)
PD[13] is a GPIO pin. RXD_A is the receive input pin for the eSCI A module. PD[13] can be configured
as a wakeup pin in the CRP_PWKENL register.
3.4.4.15 PD14 — GPIO (PD[14]) / eSCI_B Transmit (TXD_B)
PD[14] is a GPIO pin. TXD_B is the transmit output pin for the eSCI B module.
3.4.4.16 PD15 — GPIO (PD[15]) / eSCI_B Receive (RXD_B)
PD[15] is a GPIO pin. RXD_B is the receive input pin for the eSCI B module. PD[15] can be configured
as a wakeup pin in the CRP_PWKENL register.
3.4.5 Port E Pins
3.4.5.1 PE0 — GPIO (PE[0]) / eSCI_C Transmit (TXD_C) / eMIOS Channel
(eMIOS[31])
PE[0] is a GPIO pin. TXD_C is the transmit output pin for the eSCI C module. eMIOS[31] is an
input/output channel pin for the eMIOS200 module.
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