NXP Semiconductors PXN2020 - 3.4.5.9 PE8 - GPIO (PE[8]); eSCI_G Transmit (TXD_G); DSPI_A Peripheral Chip Select (PCS_A[1]); 3.4.5.10 PE9 - GPIO (PE[9]); eSCI_G Receive (RXD_G); DSPI_A Peripheral Chip Select (PCS_A[4]); 3.4.5.11 PE10 - GPIO (PE[10]); eSCI_H Transmit (TXD_H); DSPI_B Peripheral Chip Select (PCS_B[3]); 3.4.5.12 PE11 - GPIO (PE[11]); eSCI_H Receive (RXD_H); DSPI_B Peripheral Chip Select (PCS_B[2])

Signal Description
PXN20 Microcontroller Reference Manual, Rev. 1
3-28 Freescale Semiconductor
3.4.5.9 PE8 — GPIO (PE[8]) / eSCI_G Transmit (TXD_G) / DSPI_A Peripheral
Chip Select (PCS_A[1])
PE[8] is a GPIO pin. TXD_G is the transmit output pin for the eSCI G module. PCS_A[1] is a peripheral
chip select output pin for the DSPI A module.
3.4.5.10 PE9 — GPIO (PE[9]) / eSCI_G Receive (RXD_G) / DSPI_A Peripheral Chip
Select (PCS_A[4])
PE[9] is a GPIO pin. RXD_G is the receive input pin for the eSCI G module. PCS_A[4] is a peripheral
chip select output pin for the DSPI A module. PE[9] can be configured as a wakeup pin in the
CRP_PWKENH register.
3.4.5.11 PE10 — GPIO (PE[10]) / eSCI_H Transmit (TXD_H) / DSPI_B Peripheral
Chip Select (PCS_B[3])
PE[10] is a GPIO pin. TXD_H is the transmit output pin for the eSCI H module. PCS_B[3] is a peripheral
chip select output pin for the DSPI B module.
3.4.5.12 PE11 — GPIO (PE[11]) / eSCI_H Receive (RXD_H) / DSPI_B Peripheral
Chip Select (PCS_B[2])
PE[11] is a GPIO pin. RXD_H is the receive input pin for the eSCI H module. PCS_B[2] is a peripheral
chip select output pin for the DSPI B module. PE[11] can be configured as a wakeup pin in the
CRP_PWKENH register.
3.4.5.13 PE12 — GPIO (PE[12]) / eSCI_J Transmit (TXD_J) / DSPI_C Peripheral
Chip Select (PCS_C[5])
PE[12] is a GPIO pin. TXD_J is the transmit output pin for the eSCI J module. PCS_C[5] is a peripheral
chip select output pin for the DSPI C module.
3.4.5.14 PE13 — GPIO (PE[13]) / eSCI_J Receive (RXD_J) / DSPI_C Peripheral
Chip Select (PCS_C[3])
PE[13] is a GPIO pin. RXD_J is the receive input pin for the eSCI J module. PCS_C[3] is a peripheral chip
select output pin for the DSPI C module. PE[13] can be configured as a wakeup pin in the CRP_PWKENH
register.
3.4.5.15 PE14 — GPIO (PE[14]) / I
2
C_A Serial Clock Line (SCL_A) / DSPI_D
Peripheral Chip Select (PCS_D[2])
PE[14] is a GPIO pin. SCL_A is the serial clock signal for the I
2
C A module. PCS_D[2] is a peripheral
chip select output pin for the DSPI D module.