Pin Mapping

This page will describe how the names of the pins on the PocketBeagle/OSD3358 coorespond to signals on the rest of P1.

P1 consists of 3 PCBs all stacked together through headers. Each board has its own schematic and each header and signal may have different names on each board.

UTH and UTD versions of P1

Caution: Neither PocketBeagle nor Interface board is keyed, so it is possible to plug together incorrectly. Use the above diagram to ensure you are plugging together correctly.

Caution: In the case of UTH version - with enough force, it is possible to plug a 24 pin connector into the 26 pin connector socket. Please don't do that.

P1 boards:

PocketBeagle (schematic here). This is the brains of the operation.

Adapter board (schematic here). This board acts connects PocketBeagle to the M2 interface board, adds a battery connector and full-sized USB A connector.

Interface board (schematic here). This is the same interface board used with M2. This board has all of the automotive interfaces and power supply.

P1 headers:

Headers connect throughout P1 as follows:

PocketBeagle Headers

Adapter board headers

Interface board headers

P1 connects to:

J5

-

P2 connects to:

J6

-

-

J2 connects to:

J3

-

J3 connects to:

J4

-

-

J5 (26 pin connector)

-

-

J1 (UTD) or J2 (UTH)

Mappings:

12-volt Outputs

Mapped Pin Name

Function

Notes

PocketBeagle Pin Name

OUT 1

SRC

J5 Pin 2 (26 pin connector)

P1_36

OUT 2

SRC

J5 Pin 6 (26 pin connector)

P2_3

OUT 3

SRC

J5 Pin 10 (26 pin connector)

P2_2

OUT 4

SINK

J5 Pin 14 (26 pin connector)

P2_4

OUT 5

SINK

J5 Pin 18 (26 pin connector)

P1_33

OUT 6

SINK

J5 Pin 22 (26 pin connector)

P2_10

Analog Inputs (0-12V analog input)

Mapped Pin Name

Notes

PocketBeagle Pin Name

IN 1

J5 Pin 1 (26 pin connector)

P1_19

IN 2

J5 Pin 5 (26 pin connector)

P1_21

IN 3

J5 Pin 9 (26 pin connector)

P1_23

IN 4

J5 Pin 13 (26 pin connector)

P1_25

IN 5

J5 Pin 17 (26 pin connector)

P1_27

IN 6

J5 Pin 21 (26 pin connector)

P2_36

GPIO Power Supply Current Sense

Mapped Pin Name

Notes

PocketBeagle Pin Name

12Vio_EN

GPIO Power Supply Enable

P1_31

SENSE 12V

GPIO Power Supply Analog Current Sense

OVER_CURRENT

GPIO Power Supply Interrupt

DAC1

GPIO Power Supply Analog Output to Comparator

CAN

Mapped Pin Name

Notes

PocketBeagle Pin Name

CANRX0

CANRX0

1_28

CANTX0

CANTX0

1_26

CAN0_CS or HS_CS

HSC_S

1_20

CANRX1

CANRX1

2_09

CANTX1

CANTX1

2_11

CAN1_CS or MS_CS

MSC_S

2_30

Power Supplies

Mapped Pin Name

Notes

PocketBeagle Pin Name

PS_BUCK or BUCK_DIS

PS_J1850_9141

Bring LOW for LOW power

P2_19

J1850

Mapped Pin Name

Notes

PocketBeagle Pin Name

J1850_PWM_VPW

J1850_PWM_RX

J1850_VPW_RX

J1850P_TX

J1850N_TX

9141/LIN

Mapped Pin Name

Pin name

Notes

PocketBeagle Pin Name

LIN_KTX

9141 K TX

LIN1 TX

P2_7

LIN_KRX

9141 K RX

LIN1 RX

P2_5

LIN_KSLP

9141 K SLP

LIN1 Sleep

P2_22

LIN_LTX

9141 L TX

LIN2 TX

P1_30

LIN_LRX

9141 L RX

LIN2 RX

P1_32

LIN_LSLP

9141 L SLP

LIN2 Sleep

P2_28

Single-wire CAN

Mapped Pin Name

Pin Name

Notes

PocketBeagle Pin Name

SWC_M1

SWC M1

SWC_M0

SWC M0

SWC_SOF

SWC SOF

SWC_CLK

SWC CLK

SPI0_CS3

SPI0_nCS3

SWC_INT

SWC nINT

SWC_RX0

SWC nRX0BF

SWC_RX1

SWC nRX1BF