TX53

PIN

Type

Function

i.MX53 Pad Name

Alternate functions

GPIO

Description (refer to i.MX53 manuals for details)

33

3V3

USBOTG_ID

USB_OTG_ID

ID pin of the USB cable. For an A-Device ID is grounded. For a B-

Device ID is floated.

34

3V3

USBOTG_VBUSEN

CAN_TX

GPIO_7

ESAI1_TX4_RX1

EPIT1_EPITO

CAN1_TXCAN

UART2_TXD

FIRI_RXD

SPDIF_PLOCK

CCM_PLL2_BYP

GPIO1[7] Active high external 5V supply enable. This pin is used to enable the

external VBUS power supply.

35

analog USBOTG_DM

USB_OTG_DN

D- pin of the USB cable

36

3V3

#USBOTG_OC

CAN_RX

GPIO_8

ESAI1_TX5_RX0

EPIT2_EPITO

CAN1_RXCAN

UART2_RXD

FIRI_TXD

SPDIF_SRCLK

CCM_PLL3_BYP

GPIO1[8]

10K-PU

Active low over-current indicator input connected to a GPIO.

37

analog USBOTG_DP

USB_OTG_DP

D+ pin of the USB cable

38

analog USBOTG_VBUS

USB_OTG_VBUS

VBUS pin of the USB cable. This pin is used for the VBUS

comparator inputs.

39

GND

GND

I2C

40

3V3

I2C_DATA

GPIO_6

ESAI1_SCKT

I2C3_SDA

CCM_CCM_OUT_0

CSU_INT_DEB

OBSRV_INT_OUT1

ESDHC2_LCTL

MLBSIG

GPIO1[6]

I2C Data

41

3V3

I2C_CLK

GPIO_3

ESAI1_HCKR

I2C3_SCL

DPLLIP1_TOG_EN

CCM_CLKO2

OBSRV_INT_OUT0

USBOH3_USBH1_OC

MLBCLK

GPIO1[3]

I2C Clock

PWM

42

3V3

PWM

GPIO_1

ESAI1_SCKR

KPP_ROW[5]

CCM_SSI_EXT2_CLK

PWM2_PWMO

WDOG2_WDOG_B

ESDHC1_CD

TESTER_ACK

GPIO1[1]

PWM Output

1-WIRE

43

3V3

OWDAT

GPIO_18

ESAI1_TX1

SDMA_EXT_EVENT[1]

OWIRE_LINE

RTC_CE_RTC_ALARM2_TRIG

CCM_ASRC_EXT_CLK

ESDHC1_LCTL

SYSTEM_RST

GPIO7[13]

1-Wire bus. Requires an external pull-up resistor. The recommended

resistor is specified by the generic 1-Wire device used in a given

system.

CSPI – Configurable Serial Peripheral Interface

44

3V3

CSPI_SS

EIM_EB2

WEIM_EB[2]

CCM_DI1_EXT_CLK

SER_DISP1_CS

ECSPI1_SS0

I2C2_SCL

GPIO2[30] Slave Select (Selectable polarity) signal

45

3V3

CSPI_SS

EIM_D19

WEIM_D[19]

DI0_PIN8

DISPB1_SER_RS

ECSPI1_SS1

EPIT1_EPITO

UART1_CTS

USBOH3_USBH2_OC

GPIO3[19] Slave Select (Selectable polarity) signal

46

3V3

CSPI_MOSI

EIM_D18

WEIM_D[18]

DI0_PIN7

DISPB1_SER_DIO

ECSPI1_MOSI

I2C3_SDA

DI1_D0_CS

GPIO3[18] Master Out/Slave In signal

Ka-Ro electronics GmbH - Pascalstr. 22, D-52076 Aachen, Germany - Tel.: +49 2408 1402-0 (FAX -10)

www.karo-electronics.de