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