This is the latest (main) BeagleBoard documentation. If you are looking for stable releases, use the drop-down menu on the bottom-left and select the desired version.

Connectors

This section describes each of the connectors on the board.

Expansion Header Connectors

The expansion interface on the board is comprised of two 36 pin connectors. The two Expansion Header Connectors on PocketBeagle are labeled P1 and P2. The connections are a standard 100 mil distance so that they can be compatible with many standard expansion items. The silkscreen for the headers on the bottom of the board provides the easiest way to identify them. See Figure 41.

Expansion Headers for PocketBeagle

Fig. 327 Expansion Headers for PocketBeagle

All signals on the expansion headers are 3.3V unless otherwise indicated.

Note

  • Do not connect 5V logic level signals to these pins or the board will be damaged.

  • DO NOT APPLY VOLTAGE TO ANY I/O PIN WHEN POWER IS NOT SUPPLIED TO THE BOARD. IT WILL DAMAGE THE PROCESSOR AND VOID THE WARRANTY.

  • NO PINS ARE TO BE DRIVEN UNTIL AFTER THE NRESET LINE GOES HIGH.

Figure 42 shows a color coded chart with an overview of the most popular functions of PocketBeagle’s Expansion Header pins. The Header Pin tables in Sections 7.1.1 and 7.1.2 show the full pin assignments for each header.

Expansion Header Popular Functions - Color Coded

Fig. 328 Expansion Header Popular Functions - Color Coded

P1 Header

Figure 43 shows the schematic diagram for the P1 Header.

P1 Header

Use scroll bar at bottom of chart to see additional features in columns to the right. When printing this document you will need to print this chart separately.

Table 93 P1 Header Pinout

Header.Pin

Silkscreen

PocketBeagle wiring

Proc Ball

SiP Ball

Mode0 (Name)

Mode1

Mode2

Mode3

Mode4

Mode5

Mode6

Mode7

P1.01

VIN

P1.01 (VIN)

P10 & R10 & T10

VIN

P1.02

A6/87

P1.02 (AIN6/GPIO87)

A8

C9

ain6

P1.02

A6/87

P1.02 (AIN6/GPIO87)

R5

F2

lcd_hsync

gpmc_a9

gpmc_a2

pr1_edio_data_in3

pr1_edio_data_out3

pr1_pru1_pru_r30_9

pr1_pru1_pru_r31_9

gpio2_23

P1.03

USB1_EN

P1.03 (USB1-DRVVBUS)

F15

M14

USB1_DRVVBUS

gpio3_13

P1.04

89

P1.04 (PRU1.11)

R6

E1

lcd_ac_bias_en

gpmc_a11

pr1_mii1_crs

pr1_edio_data_in5

pr1_edio_data_out5

pr1_pru1_pru_r30_11

pr1_pru1_pru_r31_11

gpio2_25

P1.05

USB1_VB

P1.05 (USB1-VBUS)

T18

M15

USB1_VBUS

P1.06

SPI0_CS

P1.06 (SPI0-CS)

A16

A14

spi0_cs0

mmc2_sdwp

I2C1_SCL

ehrpwm0_synci

pr1_uart0_txd

pr1_edio_data_in1

pr1_edio_data_out1

gpio0_5

P1.07

USB1_VI

P1.07 (VIN-USB)

P9 &R9 &T9

VIN-USB

P1.08

SPI0_CLK

P1.08 (SPI0-CLK)

A17

A13

spi0_sclk

uart2_rxd

I2C2_SDA

ehrpwm0A

pr1_uart0_cts_n

pr1_edio_sof

EMU2

gpio0_02

P1.09

USB1 -

P1.09 (USB1-DN)

R18

L16

USB1_DM

P1.10

SPI0_MISO

P1.10 (SPI0-MISO)

B17

B13

spi0_d0

uart2_txd

I2C2_SCL

ehrpwm0B

pr1_uart0_rts_n

pr1_edio_latch_in

EMU3

gpio0_3

P1.11

USB1 +

P1.11 (USB1-DP)

R17

L15

USB1_DP

P1.12

SPI0_MOSI

P1.12 (SPI0-MOSI)

B16

B14

spi0_d1

mmc1_sdwp

I2C1_SDA

ehrpwm0_tripzone_input

pr1_uart0_rxd

pr1_edio_data_in0

pr1_edio_data_out0

gpio0_04

P1.13

USB1_ID

P1.13 (USB1-ID)

P17

L14

USB1_ID

P1.14

+3.3V

P1.14 (VOUT-3.3V)

F6 & F7 & G6 & G7

VOUT-3.3V

P1.15

USB1_GND

P1.15 (GND)

GND

P1.16

GND

P1.16 (GND)

GND

P1.17

AIN(1.8V)-

P1.17 (VREFN)

A9

B9

VREFN

P1.18

AIN(1.8V)A+

P1.18 (VREFP)

B9

B7

VREFP

P1.19

AIN(1.8V)0

P1.19 (AIN0-1.8V)

B6

A8

ain0

P1.20

20

P1.20 (PRU0.16)

D14

B4

xdma_event_intr1

tclkin

clkout2

timer7

pr1_pru0_pru_r31_16

EMU3

gpio0_20

P1.21

AIN(1.8V)1

P1.21 (AIN1-1.8V)

C7

B8

ain1

P1.22

GND

P1.22 (GND)

GND

P1.23

AIN(1.8V)2

P1.23 (AIN2-1.8V)

B7

B6

ain2

P1.24

VOUT

P1.24 (VOUT-5V)

K6 & K7 & L6 & L7

VOUT-5V

P1.25

AIN(1.8V)3

P1.25 (AIN3-1.8V)

A7

C6

ain3

P1.26

I2C2_SDA

P1.26 (I2C2-SDA)

D18

B10

uart1_ctsn

timer6

dcan0_tx

I2C2_SDA

spi1_cs0

pr1_uart0_cts_n

pr1_edc_latch0_in

gpio0_12

P1.27

AIN(1.8V)4

P1.27 (AIN4-1.8V)

C8

C7

ain4

P1.28

I2C2_SCL

P1.28 (I2C2-SCL)

D17

A10

uart1_rtsn

timer5

dcan0_rx

I2C2_SCL

spi1_cs1

pr1_uart0_rts_n

pr1_edc_latch1_in

gpio0_13

P1.29

PRU0_7

P1.29 (PRU0.7)

A14

C4

mcasp0_ahclkx

eQEP0_strobe

mcasp0_axr3

mcasp1_axr1

EMU4

pr1_pru0_pru_r30_7

pr1_pru0_pru_r31_7

gpio3_21

P1.30

U0_TX

P1.30 (UART0-TX)

E16

B12

uart0_txd

spi1_cs1

dcan0_rx

I2C2_SCL

eCAP1_in_PWM1_out

pr1_pru1_pru_r30_15

pr1_pru1_pru_r31_15

gpio1_11

P1.31

PRU0_4

P1.31 (PRU0.4)

B12

A3

mcasp0_aclkr

eQEP0A_in

mcasp0_axr2

mcasp1_aclkx

mmc0_sdwp

pr1_pru0_pru_r30_4

pr1_pru0_pru_r31_4

gpio3_18

P1.32

U0_RX

P1.32 (UART0-RX)

E15

A12

uart0_rxd

spi1_cs0

dcan0_tx

I2C2_SDA

eCAP2_in_PWM2_out

pr1_pru1_pru_r30_14

pr1_pru1_pru_r31_14

gpio1_10

P1.33

PRU0_1

P1.33 (PRU0.1)

B13

A2

mcasp0_fsx

ehrpwm0B

spi1_d0

mmc1_sdcd

pr1_pru0_pru_r30_1

pr1_pru0_pru_r31_1

gpio3_15

P1.34

26

P1.34 (GPIO0.26)

T11

R5

gpmc_ad10

lcd_data21

mmc1_dat2

mmc2_dat6

ehrpwm2_tripzone_input

pr1_mii0_txen

gpio0_26

P1.35

P1.10

P1.35 (PRU1.10)

V5

F1

lcd_pclk

gpmc_a10

pru_mii0_crs

pr1_edio_data_in4

pr1_edio_data_out4

pr1_pru1_pru_r30_10

pr1_pru1_pru_r31_10

gpio2_24

P1.36

PWM0A

P1.36 (PWM0A)

A13

A1

mcasp0_aclkx

ehrpwm0A

spi1_sclk

mmc0_sdcd

pr1_pru0_pru_r30_0

pr1_pru0_pru_r31_0

gpio3_14

P2 Header

Figure 44 shows the schematic diagram for the P2 Header.

P2 Header

Fig. 329 P2 Header

Use scroll bar at bottom of chart to see additional features in columns to the right. When printing this document you will need to print this chart separately.

Table 94 P2 Header Pinout

Header.Pin

Silkscreen

PocketBeagle wiring

Proc Ball

SiP Ball

Mode0 (Name)

Mode1

Mode2

Mode3

Mode4

Mode5

Mode6

Mode7

P2.01

PWM1A

P2.01 (PWM1A)

U14

P12

gpmc_a2

gmii2_txd3

rgmii2_td3

mmc2_dat1

gpmc_a18

pr1_mii1_txd2

ehrpwm1A

gpio1_18

P2.02

59

P2.02 (GPIO1.27)

V17

T16

gpmc_a11

gmii2_rxd0

rgmii2_rd0

rmii2_rxd0

gpmc_a27

pr1_mii1_rxer

mcasp0_axr1

gpio1_27

P2.03

23

P2.03 (GPIO0.23)

T10

P5

gpmc_d9

lcd_data22

mmc1_dat1

mmc2_dat5

ehrpwm2B

pr1_mii0_col

gpio0_23

P2.04

58

P2.04 (GPIO1.26)

T16

R15

gpmc_a10

gmii2_rxd1

rgmii2_rd1

rmii2_rxd1

gpmc_a26

pr1_mii1_rxdv

mcasp0_axr0

gpio1_26

P2.05

U1_RX

P2.05 (UART4-RX)

T17

P15

gpmc_wait0

gmii2_crs

gpmc_csn4

rmii2_crs_dv

mmc1_sdcd

pr1_mii1_col

uart4_rxd

gpio0_30

P2.06

57

P2.06 (GPIO1.25)

U16

T15

gpmc_a9

gmii2_rxd2

rgmii2_rd2

mmc2_dat7 / rmii2_crs_dv

gpmc_a25

pr1_mii_mr1_clk

mcasp0_fsx

gpio1_25

P2.07

U1_TX

P2.07 (UART4-TX)

U17

R16

gpmc_wp

gmii2_rxerr

gpmc_csn5

rmii2_rxerr

mmc2_sdcd

pr1_mii1_txen

uart4_txd

gpio0_31

P2.08

60

P2.08 (GPIO1.28)

U18

N14

gpmc_be1n

gmii2_col

gpmc_csn6

mmc2_dat3

gpmc_dir

pr1_mii1_rxlink

mcasp0_aclkr

gpio1_28

P2.09

I2C1_SCL

P2.09 (I2C1-SCL)

D15

B11

uart1_txd

mmc2_sdwp

dcan1_rx

I2C1_SCL

pr1_uart0_txd

pr1_pru0_pru_r31_16

gpio0_15

P2.10

52

P2.10 (GPIO1.20)

R14

R13

gpmc_a4

gmii2_txd1

rgmii2_td1

rmii2_txd1

gpmc_a20

pr1_mii1_txd0

eQEP1A_in

gpio1_20

P2.11

I2C1_SDA

P2.11 (I2C1-SDA)

D16

A11

uart1_rxd

mmc1_sdwp

dcan1_tx

I2C1_SDA

pr1_uart0_rxd

pr1_pru1_pru_r31_16

gpio0_14

P2.12

PB

P2.12 (POWER_BTN)

T11

POWER

P2.13

VOUT

P2.13 (VOUT-5V)

K6, K7, L6, L7

VOUT-5V

P2.14

BAT +

P2.14 (VIN-BAT)

P8, R8, T8

VIN-BAT

P2.15

GND

P2.15 (GND)

GND

P2.16

BAT -

P2.16 (BAT-TEMP)

N6

BAT-TEMP

P2.17

65

P2.17 (GPIO2.1)

V12

T7

gpmc_clk

lcd_memory_clk

gpmc_wait1

mmc2_clk

pr1_mii1_crs

pr1_mdio_mdclk

mcasp0_fsr

gpio2_01

P2.18

47

P2.18 (PRU0.15i)

U13

P7

gpmc_ad15

lcd_data16

mmc1_dat7

mmc2_dat3

eQEP2_strobe

pr1_ecap0_ecap_capin_apwm_o

pr1_pru0_pru_r31_15

gpio1_15P

P2.19

27

P2.19 (GPIO0.27)

U12

T5

gpmc_ad11

lcd_data20

mmc1_dat3

mmc2_dat7

ehrpwm0_synco

pr1_mii0_txd3

gpio0_27

P2.20

64

P2.20 (GPIO2.0)

T13

R7

gpmc_csn3

gpmc_a3

rmii2_crs_dv

mmc2_cmd

pr1_mii0_crs

pr1_mdio_data

EMU4

gpio2_00

P2.21

GND

P2.21 (GND)

GND

P2.22

46

P2.22 (GPIO1.14)

V13

T6

gpmc_ad14

lcd_data17

mmc1_dat6

mmc2_dat2

eQEP2_index

pr1_mii0_txd0

pr1_pru0_pru_r31_14

gpio1_14

P2.23

+3.3V

P2.23 (VOUT-3.3V)

F6 & F7 & G6 & G7

VOUT-3.3V

P2.24

48

P2.24 (GPIO1.12)

T12

P6

gpmc_ad12

lcd_data19

mmc1_dat4

mmc2_dat0

eQEP2A_in

pr1_mii0_txd2

pr1_pru0_pru_r30_14

gpio1_12

P2.25

SPI1_MOSI

P2.25 (SPI1-MOSI)

E17

C13

uart0_rtsn

uart4_txd

dcan1_rx

I2C1_SCL

spi1_d1

spi1_cs0

pr1_edc_sync1_out

gpio1_09

P2.26

RST

P2.26 (NRESET)

A10

R11

nRESETIN_OUT

P2.27

SPI1_MISO

P2.27 (SPI1-MISO)

E18

C12

uart0_ctsn

uart4_rxd

dcan1_tx

I2C1_SDA

spi1_d0

timer7

pr1_edc_sync0_out

gpio1_08

P2.28

PRU0_6

P2.28 (PRU0.6)

D13

C3

mcasp0_axr1

eQEP0_index

mcasp1_axr0

EMU3

pr1_pru0_pru_r30_6

pr1_pru0_pru_r31_6

gpio3_20

P2.29

SPI1_CLK

P2.29 (SPI1-CLK)

C18

C5

eCAP0_in_PWM0_out

uart3_txd

spi1_cs1

pr1_ecap0_ecap_capin_apwm_o

spi1_sclk

mmc0_sdwp

xdma_event_intr2

gpio0_7

P2.30

PRU0_3

P2.30 (PRU0.3)

C12

B1

mcasp0_ahclkr

ehrpwm0_synci

mcasp0_axr2

spi1_cs0

eCAP2_in_PWM2_out

pr1_pru0_pru_r30_3

pr1_pru0_pru_r31_3

gpio3_17

P2.31

SPI1_CS

P2.31 (SPI1-CS1)

A15

A4

xdma_event_intr0

timer4

clkout1

spi1_cs1

pr1_pru1_pru_r31_16

EMU2

gpio0_19

P2.32

PRU0_2

P2.32 (PRU0.2)

D12

B2

mcasp0_axr0

ehrpwm0_tripzone_input

spi1_d1

mmc2_sdcd

pr1_pru0_pru_r30_2

pr1_pru0_pru_r31_2

gpio3_16

P2.33

45

P2.33 (GPIO1.13)

R12

R6

gpmc_ad13

lcd_data18

mmc1_dat5

mmc2_dat1

eQEP2B_in

pr1_mii0_txd1

pr1_pru0_pru_r30_15

gpio1_13

P2.34

PRU0_5

P2.34 (PRU0.5)

C13

B3

mcasp0_fsr

eQEP0B_in

mcasp0_axr3

mcasp1_fsx

EMU2

pr1_pru0_pru_r30_5

pr1_pru0_pru_r31_5

gpio3_19

P2.35

A5/86

P2.35 (AIN5/GPIO86)

B8

C8

ain5

P2.35

A5/86

P2.35 (AIN5/GPIO86)

U5

F3

lcd_vsync

gpmc_a8

gpmc_a1

pr1_edio_data_in2

pr1_edio_data_out2

pr1_pru1_pru_r30_8

pr1_pru1_pru_r31_8

gpio2_22

P2.36

A7(1.8)

P2.36 (AIN7)

N13

ain7

mikroBUS socket connections

mikroBUS and, by extension “mikroBUS Click boards”, are trademarks of MikroElektronika. We do not make any claims of compatibility nor adherence to their specification. We’ve just seen that many of the Click boards “just work”.

The Expansion Headers on PocketBeagle have been designed to accept up to two Click Boards added to the header pins at the same time. This provides an exciting opportunity to add functionality easily to PocketBeagle from ‘hundreds of existing add-on Click Boards’.

The mikroBUS standard comprises a pair of 1×8 female headers with a standardized pin configuration. The pinout (always laid out in the same order) consists of three groups of communications pins (SPI, UART and I2C), six additional pins (PWM, Interrupt, Analog input, Reset and Chip select), and two power groups (+3.3V and 5V).

mikroBUS

Fig. 330 mikroBUS

The Expansion Header pin alignment enables 2 Click Boards on the top side of PocketBeagle using the inside rails of the headers. This leaves the outside rails open to be accessed from either the top or the bottom of PocketBeagle. Place each Click Board into the position shown in Figure 46, with one Click Board facing each direction. When choosing Click boards, make sure you are checking that they meet the 3.3V requirements for PocketBeagle. A growing number of community members are trying out various Click Boards and posting results on the ‘PocketBeagle Wiki mikroBus Click Boards page’.

PocketBeagle Both Headers

Fig. 331 PocketBeagle Both Headers

Setting up an additional USB Connection

You can add an additional USB connection to PocketBeagle easily by connecting a microUSB breakout. By default in the current software, the system should be configured to use this port as a host. Keep up to date on this project on the ‘PocketBeagle Wiki FAQ’.

../../../_images/PocketBeagle_microUSB_bb1.png