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Detailed Hardware Design

This section provides a detailed description of the Hardware design. This can be useful for interfacing, writing drivers, or using it to help modify specifics of your own design.

The figure below is the high level block diagram of BeagleBone® AI. For those who may be concerned, this is the same figure found in section 5. It is placed here again for convenience so it is closer to the topics to follow.

beaglebone ai component placement

Power Section

Figure ? is the high level block diagram of the power section of the board.

(Block Diagram for Power)

TPS6590379 PMIC

The Texas Instruments TPS6590379ZWSR device is an integrated power-management IC (PMIC) specifically designed to work well ARM Cortex A15 Processors, such as the AM5729 used on BeagleBone® AI. The datasheet is located here https://www.ti.com/lit/ds/symlink/tps659037.pdf

The device provides seven configurable step-down converters with up to 6 A of output current for memory, processor core, input-output (I/O), or preregulation of LDOs. One of these configurable step-down converters can be combined with another 3-A regulator to allow up to 9 A of output current. All of the step-down converters can synchronize to an external clock source between 1.7 MHz and 2.7 MHz, or an internal fallback clock at 2.2 MHz.

The TPS659037 device contains seven LDO regulators for external use. These LDO regulators can be supplied from either a system supply or a preregulated supply. The power-up and power-down controller is configurable and supports any power-up and power-down sequences (OTP based). The TPS659037 device includes a 32-kHz RC oscillator to sequence all resources during power up and power down. In cases where a fast start up is needed, a 16-MHz crystal oscillator is also included to quickly generate a stable 32-kHz for the system. All LDOs and SMPS converters can be controlled by the SPI or I2C interface, or by power request signals. In addition, voltage scaling registers allow transitioning the SMPS to different voltages by SPI, I2C, or roof and floor control.

One dedicated pin in each package can be configured as part of the power-up sequence to control external resources. General-purpose input-output (GPIO) functionality is available and two GPIOs can be configured as part of the power-up sequence to control external resources. Power request signals enable power mode control for power optimization. The device includes a general-purpose sigma-delta analog-to-digital converter (GPADC) with three external input channels.

beaglebone ai user interface placement

USB-C Power

Below image shows how the USB-C power input is connected to the TPS6590379.

Power Button

beaglebone ai user interface placement

eMMC Flash Memory (16GB)

eMMC Device

eMMC Circuit Design

Board ID

A board identifier is placed on the eMMC in the second linear boot partition (/dev/mmcblk1boot1). Reserved bytes up to 32k (0x8000) are filled with “FF”.

Table 20 Board ID

Name

Size (bytes)

Contents

Header

4

MSB 0xEE3355AA LSB (stored LSB first)

Board Name

8

Name for board in ASCII “BBONE-AI” = BeagleBone AI

Version

4

Hardware version code for board in ASCII “00A1” = rev. A1

Serial Number

14

Serial number of the board. This is a 14 character string which is:

WWYYEMAInnnnnn

where:

  • WW = 2 digit week of the year of production

  • YY = 2 digit year of production

  • EM = Embest

  • AI = BeagleBone AI

  • nnnnnn = incrementing board number

 
debian@beaglebone:~$ sudo hexdump -C /dev/mmcblk1boot1
00000000  aa 55 33 ee 42 42 4f 4e  45 2d 41 49 30 30 41 31  |.U3.BBONE-AI00A1|
00000010  31 39 33 33 45 4d 41 49  30 30 30 38 30 33 ff ff  |1933EMAI000803..|
00000020  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00008000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00400000

Wireless Communication: 802.11 ac & Bluetooth: AzureWave AW-CM256SM

Datasheet https://storage.googleapis.com/wzukusers/user-26561200/documents/5b7d0fe3c3f29Ct6k0QI/AW-CM256SM_DS_Rev%2015_CYW.pdf Wireless connectivity is provided on BeagleBone® AI via the AzureWave Technologies AW-CM256SM IEEE 802.11a/b/g/n/ac Wi-Fi with Bluetooth 4.2 Combo Stamp Module.

This highly integrated wireless local area network (WLAN) solution combines Bluetooth 4.2 and provides a complete 2.4GHz Bluetooth system which is fully compliant to Bluetooth 4.2 and v2.1 that supports EDR of 2Mbps and 3Mbps for data and audio communications. It enables a high performance, cost effective, low power, compact solution that easily fits onto the SDIO and UART combo stamp module.

Compliant with the IEEE 802.11a/b/g/n/ac standard, AW-CM256SM uses Direct Sequence Spread Spectrum (DSSS), Orthogonal Frequency Division Multiplexing (OFDM), BPSK, QPSK, CCK and QAM baseband modulation technologies. Compare to 802.11n technology, 802.11ac provides a big improvement on speed and range.

The AW-CM256SM module adopts a Cypress solution. The module design is based on the Cypress CYP43455 single chip.

WLAN on the AzureWave AW-CM256SM

High speed wireless connection up to 433.3Mbps transmit/receive PHY rate using 80MHz bandwidth,

  • 1 antennas to support 1(Transmit) and 1(Receive) technology and Bluetooth

  • WCS (Wireless Coexistence System)

  • Low power consumption and high performance

  • Enhanced wireless security

  • Fully speed operation with Piconet and Scatternet support

  • 12mm(L) x 12mm(W) x1.65mm(H) LGA package

  • Dual - band 2.4 GHz and 5GHz 802.11 a/b/g/n/ac

  • External Crystal

Bluetooth on the AzureWave AW-CM256S

  • 1 antennas to support 1(Transmit) and 1(Receive) technology and Bluetooth

  • Fully qualified Bluetooth BT4.2

  • Enhanced Data Rate(EDR) compliant for both 2Mbps and 3Mbps supported

  • High speed UART and PCM for Bluetooth

HDMI

The HDMI interface is aligned with the HDMI TMDS single stream standard v1.4a (720p @60Hz to 1080p @24Hz) and the HDMI v1.3 (1080p @60Hz): 3 data channels, plus 1 clock channel is supported (differential).

TODO: Verify it isn’t better than this. Doesn’t seem right.

PRU-ICSS

The Texas Instruments AM5729 Sitara™ provides 2 Programmable Real-Time Unit Subsystem and Industrial Communciation Subsystems. (PRU-ICSS1 and PRU-ICSS2).

Within each PRU-ICSS are dual 32-bit Load / Store RISC CPU cores: Programmable Real-Time Units (PRU0 and PRU1), shared data and instruction memories, internal peripheral modules and an interrupt controller. Therefore the SoC is providing a total of 4 PRU 32-bit RISC CPU’s:

  • PRU-ICSS1 PRU0

  • PRU-ICSS1 PRU1

  • PRU-ICSS2 PRU0

  • PRU-ICSS2 PRU1

The programmable nature of the PRUs, along with their access to pins, events and all SoC resources, provides flexibility in implementing fast real-time responses, specialized data handling operations, peripheral interfaces and in off-loading tasks from the other processor cores of the SoC.

PRU-ICSS Features

Each of the 2 PRU-ICSS (PRU-ICSS1 and PRU-ICSS2) includes the following main features:

  • 2 Independent programmable real-time (PRU) cores (PRU0 and PRU1)

  • 21x Enhanced GPIs (EGPIs) and 21x Enhanced GPOs (EGPOs) with asynchronous capture and serial support per each PRU CPU core

  • One Ethernet MII_RT module (PRU-ICSS_MII_RT) with two MII ports and configurable connections to PRUs

  • 1 MDIO Port (PRU-ICSS_MII_MDIO)

  • One Industrial Ethernet Peripheral (IEP) to manage/generate Industrial Ethernet functions

  • 1 x 16550-compatible UART with a dedicated 192 MHz clock to support 12Mbps Profibus

  • 1 Industrial Ethernet timer with 7/9 capture and 8 compare events

  • 1 Enhanced Capture Module (ECAP)

  • 1 Interrupt Controller (PRU-ICSS_INTC)

  • A flexible power management support

  • Integrated switched central resource with programmable priority

  • Parity control supported by all memories

PRU-ICSS Block Diagram

Below is a high level block diagram of one of the PRU-ICSS Subsystems

beaglebone ai component placement

PRU-ICSS Resources and FAQ’s

Resources

FAQ

  • Q: Is it possible to configure the Ethernet MII to be accessed via a PRU MII?

  • A: TBD

PRU-ICSS1 Pin Access

The table below shows which PRU-ICSS1 signals can be accessed on BeagleBone® AI and on which connector and pins they are accessible from. Some signals are accessible on the same pins. Signal Names reveal which PRU-ICSS Subsystem is being addressed. pr1 is PRU-ICSS1 and pr2 is PRU-ICSS2

Table 21 PRU-ICSS1 Pin Access

SIGNAL NAME

DESCRIPTION

T Y P E

P R O C

HE ADER _PIN

M O D E

HE ADER _PIN

M O D E

pr1_pru0_gpo0

PRU0 G eneral-Purpose Output

O

A H 6

NA

pr1_pru0_gpo1

PRU0 G eneral-Purpose Output

O

A H 3

NA

pr1_pru0_gpo2

PRU0 G eneral-Purpose Output

O

A H 5

NA

pr1_pru0_gpo3

PRU0 G eneral-Purpose Output

O

A G 6

P 8_12

M O D E 1 3

pr1_pru0_gpo4

PRU0 G eneral-Purpose Output

O

A H 4

P 8_11

M O D E 1 3

pr1_pru0_gpo5

PRU0 G eneral-Purpose Output

O

A G 4

P 9_15

M O D E 1 3

pr1_pru0_gpo6

PRU0 G eneral-Purpose Output

O

A G 2

NA

pr1_pru0_gpo7

PRU0 G eneral-Purpose Output

O

A G 3

NA

pr1_pru0_gpo8

PRU0 G eneral-Purpose Output

O

A G 5

NA

pr1_pru0_gpo9

PRU0 G eneral-Purpose Output

O

A F 2

NA

pr1_pru0_gpo10

PRU0 G eneral-Purpose Output

O

A F 6

NA

pr1_pru0_gpo11

PRU0 G eneral-Purpose Output

O

A F 3

NA

pr1_pru0_gpo12

PRU0 G eneral-Purpose Output

O

A F 4

NA

pr1_pru0_gpo13

PRU0 G eneral-Purpose Output

O

A F 1

NA

pr1_pru0_gpo14

PRU0 G eneral-Purpose Output

O

A E 3

NA

pr1_pru0_gpo15

PRU0 G eneral-Purpose Output

O

A E 5

NA

pr1_pru0_gpo16

PRU0 G eneral-Purpose Output

O

A E 1

NA

pr1_pru0_gpo17

PRU0 G eneral-Purpose Output

O

A E 2

P 9_26

M O D E 1 3

pr1_pru0_gpo18

PRU0 G eneral-Purpose Output

O

A E 6

NA

pr1_pru0_gpo19

PRU0 G eneral-Purpose Output

O

A D 2

NA

pr1_pru0_gpo20

PRU0 G eneral-Purpose Output

O

A D 3

NA

pr1_pru0_gpi0

PRU0 G eneral-Purpose Input

I

A H 6

NA

pr1_pru0_gpi1

PRU0 G eneral-Purpose Input

I

A H 3

NA

pr1_pru0_gpi2

PRU0 G eneral-Purpose Input

I

A H 5

NA

pr1_pru0_gpi3

PRU0 G eneral-Purpose Input

I

A G 6

P 8_12

M O D E 1 2

pr1_pru0_gpi4

PRU0 G eneral-Purpose Input

I

A H 4

P 8_11

M O D E 1 2

pr1_pru0_gpi5

PRU0 G eneral-Purpose Input

I

A G 4

P 9_15

M O D E 1 2

pr1_pru0_gpi6

PRU0 G eneral-Purpose Input

I

A G 2

NA

pr1_pru0_gpi7

PRU0 G eneral-Purpose Input

I

A G 3

NA

pr1_pru0_gpi8

PRU0 G eneral-Purpose Input

I

A G 5

NA

pr1_pru0_gpi9

PRU0 G eneral-Purpose Input

I

A F 2

NA

pr1_pru0_gpi10

PRU0 G eneral-Purpose Input

I

A F 6

NA

pr1_pru0_gpi11

PRU0 G eneral-Purpose Input

I

A F 3

NA

pr1_pru0_gpi12

PRU0 G eneral-Purpose Input

I

A F 4

NA

pr1_pru0_gpi13

PRU0 G eneral-Purpose Input

I

A F 1

NA

pr1_pru0_gpi14

PRU0 G eneral-Purpose Input

I

A E 3

NA

pr1_pru0_gpi15

PRU0 G eneral-Purpose Input

I

A E 5

NA

pr1_pru0_gpi16

PRU0 G eneral-Purpose Input

I

A E 1

NA

pr1_pru0_gpi17

PRU0 G eneral-Purpose Input

I

A E 2

P 9_26

M O D E 1 2

pr1_pru0_gpi18

PRU0 G eneral-Purpose Input

I

A E 6

NA

pr1_pru0_gpi19

PRU0 G eneral-Purpose Input

I

A D 2

NA

pr1_pru0_gpi20

PRU0 G eneral-Purpose Input

I

A D 3

NA

pr1_pru1_gpo0

PRU1 G eneral-Purpose Output

O

E 2

NA

pr1_pru1_gpo1

PRU1 G eneral-Purpose Output

O

D 2

P 9_20

M O D E 1 3

pr1_pru1_gpo2

PRU1 G eneral-Purpose Output

O

F 4

P 9_19

M O D E 1 3

pr1_pru1_gpo3

PRU1 G eneral-Purpose Output

O

C 1

P 9_41

M O D E 1 3

pr1_pru1_gpo4

PRU1 G eneral-Purpose Output

O

E 4

NA

pr1_pru1_gpo5

PRU1 G eneral-Purpose Output

O

F 5

P 8_18

M O D E 1 3

pr1_pru1_gpo6

PRU1 G eneral-Purpose Output

O

E 6

P 8_19

M O D E 1 3

pr1_pru1_gpo7

PRU1 G eneral-Purpose Output

O

D 3

P 8_13

M O D E 1 3

pr1_pru1_gpo8

PRU1 G eneral-Purpose Output

O

F 6

NA

pr1_pru1_gpo9

PRU1 G eneral-Purpose Output

O

D 5

P 8_14

M O D E 1 3

pr1_pru1_gpo10

PRU1 G eneral-Purpose Output

O

C 2

P 9_42

M O D E 1 3

pr1_pru1_gpo11

PRU1 G eneral-Purpose Output

O

C 3

P 9_27

M O D E 1 3

pr1_pru1_gpo12

PRU1 G eneral-Purpose Output

O

C 4

NA

pr1_pru1_gpo13

PRU1 G eneral-Purpose Output

O

B 2

NA

pr1_pru1_gpo14

PRU1 G eneral-Purpose Output

O

D 6

P 9_14

M O D E 1 3

pr1_pru1_gpo15

PRU1 G eneral-Purpose Output

O

C 5

P 9_16

M O D E 1 3

pr1_pru1_gpo16

PRU1 G eneral-Purpose Output

O

A 3

P 8_15

M O D E 1 3

pr1_pru1_gpo17

PRU1 G eneral-Purpose Output

O

B 3

P 8_26

M O D E 1 3

pr1_pru1_gpo18

PRU1 G eneral-Purpose Output

O

B 4

P 8_16

M O D E 1 3

pr1_pru1_gpo19

PRU1 G eneral-Purpose Output

O

B 5

NA

pr1_pru1_gpo20

PRU1 G eneral-Purpose Output

O

A 4

NA

pr1_pru1_gpi0

PRU1 G eneral-Purpose Input

I

E 2

NA

pr1_pru1_gpi1

PRU1 G eneral-Purpose Input

I

D 2

P 9_20

M O D E 1 2

pr1_pru1_gpi2

PRU1 G eneral-Purpose Input

I

F 4

P 9_19

M O D E 1 2

pr1_pru1_gpi3

PRU1 G eneral-Purpose Input

I

C 1

P 9_41

M O D E 1 2

pr1_pru1_gpi4

PRU1 G eneral-Purpose Input

I

E 4

NA

pr1_pru1_gpi5

PRU1 G eneral-Purpose Input

I

F 5

P 8_18

M O D E 1 2

pr1_pru1_gpi6

PRU1 G eneral-Purpose Input

I

E 6

P 8_19

M O D E 1 2

pr1_pru1_gpi7

PRU1 G eneral-Purpose Input

I

D 3

P 8_13

M O D E 1 2

pr1_pru1_gpi8

PRU1 G eneral-Purpose Input

I

F 6

NA

pr1_pru1_gpi9

PRU1 G eneral-Purpose Input

I

D 5

P 8_14

M O D E 1 2

pr1_pru1_gpi10

PRU1 G eneral-Purpose Input

I

C 2

P 9_42

M O D E 1 2

pr1_pru1_gpi11

PRU1 G eneral-Purpose Input

I

C 3

P 9_27

M O D E 1 2

pr1_pru1_gpi12

PRU1 G eneral-Purpose Input

I

C 4

NA

pr1_pru1_gpi13

PRU1 G eneral-Purpose Input

I

B 2

NA

pr1_pru1_gpi14

PRU1 G eneral-Purpose Input

I

D 6

P 9_14

M O D E 1 2

pr1_pru1_gpi15

PRU1 G eneral-Purpose Input

I

C 5

P 9_16

M O D E 1 2

pr1_pru1_gpi16

PRU1 G eneral-Purpose Input

I

A 3

P 8_15

M O D E 1 2

pr1_pru1_gpi17

PRU1 G eneral-Purpose Input

I

B 3

P 8_26

M O D E 1 2

pr1_pru1_gpi18

PRU1 G eneral-Purpose Input

I

B 4

P 8_16

M O D E 1 2

pr1_pru1_gpi19

PRU1 G eneral-Purpose Input

I

B 5

NA

pr1_pru1_gpi20

PRU1 G eneral-Purpose Input

I

A 4

NA

pr1_mii_mt0_clk

MII0 Transmit Clock

I

U 5

NA

pr1_mii0_txen

MII0 Transmit Enable

O

V 3

NA

pr1_mii0_txd3

MII0 Transmit Data

O

V 5

NA

pr1_mii0_txd2

MII0 Transmit Data

O

V 4

NA

pr1_mii0_txd1

MII0 Transmit Data

O

Y 2

NA

pr1_mii0_txd0

MII0 Transmit Data

O

W 2

NA

pr1_mii0_rxdv

MII0 Data Valid

I

V 2

NA

pr1_mii_mr0_clk

MII0 Receive Clock

I

Y 1

NA

pr1_mii0_rxd3

MII0 Receive Data

I

W 9

NA

pr1_mii0_rxd2

MII0 Receive Data

I

V 9

NA

pr1_mii0_crs

MII0 Carrier Sense

I

V 7

NA

pr1_mii0_rxer

MII0 Receive Error

I

U 7

NA

pr1_mii0_rxd1

MII0 Receive Data

I

V 6

NA

pr1_mii0_rxd0

MII0 Receive Data

I

U 6

NA

pr1_mii0_col

MII0 Collision Detect

I

V 1

NA

pr1_mii0_rxlink

MII0 Receive Link

I

U 4

NA

pr1_mii_mt1_clk

MII1 Transmit Clock

I

C 1

P 9_41

M O D E 1 1

pr1_mii1_txen

MII1 Transmit Enable

O

E 4

NA

pr1_mii1_txd3

MII1 Transmit Data

O

F 5

P 8_18

M O D E 1 1

pr1_mii1_txd2

MII1 Transmit Data

O

E 6

P 8_19

M O D E 1 1

pr1_mii1_txd1

MII1 Transmit Data

O

D 5

P 8_14

M O D E 1 1

pr1_mii1_txd0

MII1 Transmit Data

O

C 2

P 9_42

M O D E 1 1

pr1_mii_mr1_clk

MII1 Receive Clock

I

C 3

P 9_27

M O D E 1 1

pr1_mii1_rxdv

MII1 Data Valid

I

C 4

NA

pr1_mii1_rxd3

MII1 Receive Data

I

B 2

NA

pr1_mii1_rxd2

MII1 Receive Data

I

D 6

P 9_14

M O D E 1 1

pr1_mii1_rxd1

MII1 Receive Data

I

C 5

P 9_16

M O D E 1 1

pr1_mii1_rxd0

MII1 Receive Data

I

A 3

P 8_15

M O D E 1 1

pr1_mii1_rxer

MII1 Receive Error

I

B 3

P 8_26

M O D E 1 1

pr1_mii1_rxlink

MII1 Receive Link

I

B 4

P 8_16

M O D E 1 1

pr1_mii1_col

MII1 Collision Detect

I

B 5

NA

pr1_mii1_crs

MII1 Carrier Sense

I

A 4

NA

pr1_mdio_mdclk

MDIO Clock

O

D 3

P 8_13

M O D E 1 1

pr1_mdio_data

MDIO Data

I O

F 6

NA

pr1_edc_latch0_in

Latch Input 0

I

A G 3 / E 2

NA

pr1_edc_latch1_in

Latch Input 1

I

A G 5

NA

pr1_edc_sync0_out

SYNC0 Output

O

A F 2 / D 2

P 9_20

M O D E 1 1

pr1_edc_sync1_out

SYNC1 Output

O

A F 6

NA

pr1_edio_latch_in

Latch Input

I

A F 3

NA

pr1_edio_sof

Start Of Frame

O

A F 4 / F 4

P 9_19

M O D E 1 1

pr1_edio_data_in0

Ethernet Digital Input

I

A F 1 / E 1

NA

pr1_edio_data_in1

Ethernet Digital Input

I

A E 3 / G 2

NA

pr1_edio_data_in2

Ethernet Digital Input

I

A E 5 / H 7

NA

pr1_edio_data_in3

Ethernet Digital Input

I

A E 1 / G 1

NA

pr1_edio_data_in4

Ethernet Digital Input

I

A E 2 / G 6

P 9_26

M O D E 1 0

P 8_34

M O D E 1 2

pr1_edio_data_in5

Ethernet Digital Input

I

A E 6 / F 2

P 8_36

M O D E 1 2

pr1_edio_data_in6

Ethernet Digital Input

I

A D 2 / F 3

NA

pr1_edio_data_in7

Ethernet Digital Input

I

A D 3 / D 1

P 8_15

M O D E 1 2

p r1_edio_data_out0

Ethernet Digital Output

O

A F 1 / E 1

NA

p r1_edio_data_out1

Ethernet Digital Output

O

A E 3 / G 2

NA

p r1_edio_data_out2

Ethernet Digital Output

O

A E 5 / H 7

NA

p r1_edio_data_out3

Ethernet Digital Output

O

A E 1 / G 1

NA

p r1_edio_data_out4

Ethernet Digital Output

O

A E 2 / G 6

P 9_26

M O D E 1 1

P 8_34

M O D E 1 3

p r1_edio_data_out5

Ethernet Digital Output

O

A E 6 / F 2

P 8_36

M O D E 1 3

p r1_edio_data_out6

Ethernet Digital Output

O

A D 2 / F 3

NA

p r1_edio_data_out7

Ethernet Digital Output

O

A D 3 / D 1

P 8_15

M O D E 1 3

pr1_uart0_cts_n

UART Clear-To-Send

I

G 1 / F 1 1

P 8_45

M O D E 1 0

pr1_uart0_rts_n

UART Ready-To-Send

O

G 6 / G 1 0

P 8_34

M O D E 1 1

P 8_46

M O D E 1 0

pr1_uart0_rxd

UART Receive Data

I

F 2 / F 1 0

P 8_36

M O D E 1 1

P 8_43

M O D E 1 0

pr1_uart0_txd

UART Transmit Data

O

F 3 / G 1 1

P 8_44

M O D E 1 0

pr1_ecap0_ ecap_capin_apwm_o

Capture Input/PWM Output

I O

D 1 / E 9

P 8_15

M O D E 1 1

P 8_41

M O D E 1 0

PRU-ICSS2 Pin Access

The table below shows which PRU-ICSS2 signals can be accessed on BeagleBone® AI and on which connector and pins they are accessible from. Some signals are accessible on the same pins. Signal Names reveal which PRU-ICSS Subsystem is being addressed. pr1 is PRU-ICSS1 and pr2 is PRU-ICSS2

Table 22 PRU-ICSS2 Pin Access

SIGNAL NAME

DESCR IPTION

TYPE

PROC

HEAD ER_PIN

MODE

HEAD ER_PIN

MODE

p r2_pru 0_gpo0

PRU0 Gen eral-P urpose Output

O

G 11/AC5

P8_44

MODE13

p r2_pru 0_gpo1

PRU0 Gen eral-P urpose Output

O

E9/AB4

P8_41

MODE13

p r2_pru 0_gpo2

PRU0 Gen eral-P urpose Output

O

F9/AD4

P8_42

MODE13

P8_21

MODE13

p r2_pru 0_gpo3

PRU0 Gen eral-P urpose Output

O

F8/AC4

P8_39

MODE13

P8_20

MODE13

p r2_pru 0_gpo4

PRU0 Gen eral-P urpose Output

O

E7/AC7

P8_40

MODE13

P8_25

MODE13

p r2_pru 0_gpo5

PRU0 Gen eral-P urpose Output

O

E8/AC6

P8_37

MODE13

P8_24

MODE13

p r2_pru 0_gpo6

PRU0 Gen eral-P urpose Output

O

D9/AC9

P8_38

MODE13

P8_5

MODE13

p r2_pru 0_gpo7

PRU0 Gen eral-P urpose Output

O

D7/AC3

P8_36

MODE13

P8_6

MODE13

p r2_pru 0_gpo8

PRU0 Gen eral-P urpose Output

O

D8/AC8

P8_34

MODE13

P8_23

MODE13

p r2_pru 0_gpo9

PRU0 Gen eral-P urpose Output

O

A5/AD6

P8_35

MODE13

P8_22

MODE13

pr 2_pru0 _gpo10

PRU0 Gen eral-P urpose Output

O

C6/AB8

P8_33

MODE13

P8_3

MODE13

pr 2_pru0 _gpo11

PRU0 Gen eral-P urpose Output

O

C8/AB5

P8_31

MODE13

P8_4

MODE13

pr 2_pru0 _gpo12

PRU0 Gen eral-P urpose Output

O

C7/B18

P8_32

MODE13

pr 2_pru0 _gpo13

PRU0 Gen eral-P urpose Output

O

B7/F15

P8_45

MODE13

pr 2_pru0 _gpo14

PRU0 Gen eral-P urpose Output

O

B8/B19

P9_11

MODE13

P9_11

MODE13

pr 2_pru0 _gpo15

PRU0 Gen eral-P urpose Output

O

A7/C17

P8_17

MODE13

P9_13

MODE13

pr 2_pru0 _gpo16

PRU0 Gen eral-P urpose Output

O

A8/C15

P8_27

MODE13

pr 2_pru0 _gpo17

PRU0 Gen eral-P urpose Output

O

C9/A16

P8_28

MODE13

pr 2_pru0 _gpo18

PRU0 Gen eral-P urpose Output

O

A9/A19

P8_29

MODE13

pr 2_pru0 _gpo19

PRU0 Gen eral-P urpose Output

O

B9/A18

P8_30

MODE13

pr 2_pru0 _gpo20

PRU0 Gen eral-P urpose Output

O

A 10/F14

P8_46

MODE13

P8_8

MODE13

p r2_pru 0_gpi0

PRU0 Gen eral-P urpose Input

I

G 11/AC5

P8_44

MODE12

p r2_pru 0_gpi1

PRU0 Gen eral-P urpose Input

I

E9/AB4

P8_41

MODE12

p r2_pru 0_gpi2

PRU0 Gen eral-P urpose Input

I

F9/AD4

P8_42

MODE12

P8_21

MODE12

p r2_pru 0_gpi3

PRU0 Gen eral-P urpose Input

I

F8/AC4

P8_39

MODE12

P8_20

MODE12

p r2_pru 0_gpi4

PRU0 Gen eral-P urpose Input

I

E7/AC7

P8_40

MODE12

P8_25

MODE12

p r2_pru 0_gpi5

PRU0 Gen eral-P urpose Input

I

E8/AC6

P8_37

MODE12

P8_24

MODE12

p r2_pru 0_gpi6

PRU0 Gen eral-P urpose Input

I

D9/AC9

P8_38

MODE12

P8_5

MODE12

p r2_pru 0_gpi7

PRU0 Gen eral-P urpose Input

I

D7/AC3

P8_36

MODE12

P8_6

MODE12

p r2_pru 0_gpi8

PRU0 Gen eral-P urpose Input

I

D8/AC8

P8_34

MODE12

P8_23

MODE12

p r2_pru 0_gpi9

PRU0 Gen eral-P urpose Input

I

A5/AD6

P8_35

MODE12

P8_22

MODE12

pr 2_pru0 _gpi10

PRU0 Gen eral-P urpose Input

I

C6/AB8

P8_33

MODE12

P8_3

MODE12

pr 2_pru0 _gpi11

PRU0 Gen eral-P urpose Input

I

C8/AB5

P8_31

MODE12

P8_4

MODE12

pr 2_pru0 _gpi12

PRU0 Gen eral-P urpose Input

I

C7/B18

P8_32

MODE12

pr 2_pru0 _gpi13

PRU0 Gen eral-P urpose Input

I

B7/F15

P8_45

MODE12

pr 2_pru0 _gpi14

PRU0 Gen eral-P urpose Input

I

B8/B19

P9_11

MODE12

P9_11

MODE12

pr 2_pru0 _gpi15

PRU0 Gen eral-P urpose Input

I

A7/C17

P8_17

MODE12

P9_13

MODE12

pr 2_pru0 _gpi16

PRU0 Gen eral-P urpose Input

I

A8/C15

P8_27

MODE12

pr 2_pru0 _gpi17

PRU0 Gen eral-P urpose Input

I

C9/A16

P8_28

MODE12

pr 2_pru0 _gpi18

PRU0 Gen eral-P urpose Input

I

A9/A19

P8_29

MODE12

pr 2_pru0 _gpi19

PRU0 Gen eral-P urpose Input

I

B9/A18

P8_30

MODE12

pr 2_pru0 _gpi20

PRU0 Gen eral-P urpose Input

I

A 10/F14

P8_46

MODE12

P8_8

MODE12

p r2_pru 1_gpo0

PRU1 Gen eral-P urpose Output

O

V1/D17

P8_32

MODE13

p r2_pru 1_gpo1

PRU1 Gen eral-P urpose Output

O

U4/AA3

NA

p r2_pru 1_gpo2

PRU1 Gen eral-P urpose Output

O

U3/AB9

NA

p r2_pru 1_gpo3

PRU1 Gen eral-P urpose Output

O

V2/AB3

NA

p r2_pru 1_gpo4

PRU1 Gen eral-P urpose Output

O

Y1/AA4

NA

p r2_pru 1_gpo5

PRU1 Gen eral-P urpose Output

O

W9/D18

P9_25

MODE13

p r2_pru 1_gpo6

PRU1 Gen eral-P urpose Output

O

V9/E17

P8_9

MODE13

p r2_pru 1_gpo7

PRU1 Gen eral-P urpose Output

O

V7/C14

P9_31

MODE13

p r2_pru 1_gpo8

PRU1 Gen eral-P urpose Output

O

U7/G12

P9_18

MODE13

p r2_pru 1_gpo9

PRU1 Gen eral-P urpose Output

O

V6/F12

P9_17

MODE13

pr 2_pru1 _gpo10

PRU1 Gen eral-P urpose Output

O

U6/B12

P9_31

MODE13

pr 2_pru1 _gpo11

PRU1 Gen eral-P urpose Output

O

U5/A11

P9_29

MODE13

pr 2_pru1 _gpo12

PRU1 Gen eral-P urpose Output

O

V5/B13

P9_30

MODE13

pr 2_pru1 _gpo13

PRU1 Gen eral-P urpose Output

O

V4/A12

P9_26

MODE13

pr 2_pru1 _gpo14

PRU1 Gen eral-P urpose Output

O

V3/E14

P9_42

MODE13

pr 2_pru1 _gpo15

PRU1 Gen eral-P urpose Output

O

Y2/A13

P8_10

MODE13

pr 2_pru1 _gpo16

PRU1 Gen eral-P urpose Output

O

W2/G14

P8_7

MODE13

pr 2_pru1 _gpo17

PRU1 Gen eral-P urpose Output

O

E11

P8_27

MODE13

pr 2_pru1 _gpo18

PRU1 Gen eral-P urpose Output

O

F11

P8_45

MODE13

pr 2_pru1 _gpo19

PRU1 Gen eral-P urpose Output

O

G10

P8_46

MODE13

pr 2_pru1 _gpo20

PRU1 Gen eral-P urpose Output

O

F10

P8_43

MODE13

p r2_pru 1_gpi0

PRU1 Gen eral-P urpose Input

I

V1/D17

P8_32

MODE12

p r2_pru 1_gpi1

PRU1 Gen eral-P urpose Input

I

U4/AA3

NA

p r2_pru 1_gpi2

PRU1 Gen eral-P urpose Input

I

U3/AB9

NA

p r2_pru 1_gpi3

PRU1 Gen eral-P urpose Input

I

V2/AB3

NA

p r2_pru 1_gpi4

PRU1 Gen eral-P urpose Input

I

Y1/AA4

NA

p r2_pru 1_gpi5

PRU1 Gen eral-P urpose Input

I

W9/D18

P9_25

MODE12

p r2_pru 1_gpi6

PRU1 Gen eral-P urpose Input

I

V9/E17

P8_9

MODE12

p r2_pru 1_gpi7

PRU1 Gen eral-P urpose Input

I

V7/C14

P9_31

MODE12

p r2_pru 1_gpi8

PRU1 Gen eral-P urpose Input

I

U7/G12

P9_18

MODE12

p r2_pru 1_gpi9

PRU1 Gen eral-P urpose Input

I

V6/F12

P9_17

MODE12

pr 2_pru1 _gpi10

PRU1 Gen eral-P urpose Input

I

U6/B12

P9_31

MODE12

pr 2_pru1 _gpi11

PRU1 Gen eral-P urpose Input

I

U5/A11

P9_29

MODE12

pr 2_pru1 _gpi12

PRU1 Gen eral-P urpose Input

I

V5/B13

P9_30

MODE12

pr 2_pru1 _gpi13

PRU1 Gen eral-P urpose Input

I

V4/A12

P9_28

MODE12

pr 2_pru1 _gpi14

PRU1 Gen eral-P urpose Input

I

V3/E14

P9_42

MODE12

pr 2_pru1 _gpi15

PRU1 Gen eral-P urpose Input

I

Y2/A13

P8_10

MODE12

pr 2_pru1 _gpi16

PRU1 Gen eral-P urpose Input

I

W2/G14

P8_7

MODE12

pr 2_pru1 _gpi17

PRU1 Gen eral-P urpose Input

I

E11

P8_27

MODE12

pr 2_pru1 _gpi18

PRU1 Gen eral-P urpose Input

I

F11

P8_45

MODE12

pr 2_pru1 _gpi19

PRU1 Gen eral-P urpose Input

I

G10

P8_46

MODE12

pr 2_pru1 _gpi20

PRU1 Gen eral-P urpose Input

I

F10

P8_43

MODE12

pr2_e dc_lat ch0_in

Latch Input 0

I

F9

P8_42

MODE10

pr2_e dc_lat ch1_in

Latch Input 1

I

F8

P8_39

MODE10

pr2_e dc_syn c0_out

SYNC0 Output

O

E7

P8_40

MODE10

pr2_e dc_syn c1_out

SYNC1 Output

O

E8

P8_37

MODE10

pr2_e dio_la tch_in

Latch Input

I

D9

P8_38

MODE10

pr2_ed io_sof

Start Of Frame

O

D7

P8_36

MODE10

pr2 _uart0 _cts_n

UART C lear-T o-Send

I

D8

P8_34

MODE10

pr2 _uart0 _rts_n

UART R eady-T o-Send

O

A5

P8_35

MODE10

p r2_uar t0_rxd

UART R eceive Data

I

C6

P8_33

MODE10

p r2_uar t0_txd

UART Tr ansmit Data

O

C8

P8_31

MODE10

pr2 _ecap0 _ecap_ capin_ apwm_o

C apture Inp ut/PWM output

IO

C7

P8_32

MODE10

pr2_e dio_da ta_in0

Et hernet D igital Input

I

B7

P8_45

MODE10

pr2_e dio_da ta_in1

Et hernet D igital Input

I

B8

P9_11

MODE10

pr2_e dio_da ta_in2

Et hernet D igital Input

I

A7

P8_17

MODE10

pr2_e dio_da ta_in3

Et hernet D igital Input

I

A8

P8_27

MODE10

pr2_e dio_da ta_in4

Et hernet D igital Input

I

C9

P8_28

MODE10

pr2_e dio_da ta_in5

Et hernet D igital Input

I

A9

P8_29

MODE10

pr2_e dio_da ta_in6

Et hernet D igital Input

I

B9

P8_30

MODE10

pr2_e dio_da ta_in7

Et hernet D igital Input

I

A10

P8_46

MODE10

pr2_ed io_dat a_out0

Et hernet D igital Output

O

B7

P8_45

MODE11

pr2_ed io_dat a_out1

Et hernet D igital Output

O

B8

P9_11

MODE11

pr2_ed io_dat a_out2

Et hernet D igital Output

O

A7

P8_17

MODE11

pr2_ed io_dat a_out3

Et hernet D igital Output

O

A8

P8_27

MODE11

pr2_ed io_dat a_out4

Et hernet D igital Output

O

C9

P8_28

MODE11

pr2_ed io_dat a_out5

Et hernet D igital Output

O

A9

P8_29

MODE11

pr2_ed io_dat a_out6

Et hernet D igital Output

O

B9

P8_30

MODE11

pr2_ed io_dat a_out7

Et hernet D igital Output

O

A10

P8_46

MODE11

pr2_mi i1_col

MII1 Col lision Detect

I

D18

P9_25

MODE11

pr2_mi i1_crs

MII1 C arrier Sense

I

E17

P8_9

MODE11

pr 2_mdio _mdclk

MDIO Clock

O

C 14/AB3

P9_31

MODE11

p r2_mdi o_data

MDIO Data

IO

D 14/AA4

P9_29

MODE11

p r2_mii 0_rxer

MII0 R eceive Error

I

G12

P9_18

MODE11

pr2 _mii_m t0_clk

MII0 Tr ansmit Clock

I

F12

P9_17

MODE11

p r2_mii 0_txen

MII0 Tr ansmit Enable

O

B12

P9_31

MODE11

p r2_mii 0_txd3

MII0 Tr ansmit Data

O

A11

P9_29

MODE11

p r2_mii 0_txd2

MII0 Tr ansmit Data

O

B13

P9_30

MODE11

p r2_mii 0_txd1

MII0 Tr ansmit Data

O

A12

P9_28

MODE11

p r2_mii 0_txd0

MII0 Tr ansmit Data

O

E14

P9_42

MODE11

pr2 _mii_m r0_clk

MII0 R eceive Clock

I

A13

P8_10

MODE11

p r2_mii 0_rxdv

MII0 Data Valid

I

G14

P8_7

MODE11

p r2_mii 0_rxd3

MII0 R eceive Data

I

F14

P8_8

MODE11

p r2_mii 0_rxd2

MII0 R eceive Data

I

A19

NA

p r2_mii 0_rxd1

MII0 R eceive Data

I

A18

NA

p r2_mii 0_rxd0

MII0 R eceive Data

I

C15

NA

pr2 _mii0_ rxlink

MII0 R eceive Link

I

A16

NA

pr2_mi i0_crs

MII0 C arrier Sense

I

B18

NA

pr2_mi i0_col

MII0 Col lision Detect

I

F15

NA

p r2_mii 1_rxer

MII1 R eceive Error

I

B19

P9_11

MODE11

pr2 _mii1_ rxlink

MII1 R eceive Link

I

C17

P9_13

MODE11

pr2 _mii_m t1_clk

MII1 Tr ansmit Clock

I

AC5

NA

p r2_mii 1_txen

MII1 Tr ansmit Enable

O

AB4

NA

p r2_mii 1_txd3

MII1 Tr ansmit Data

O

AD4

P8_21

MODE11

p r2_mii 1_txd2

MII1 Tr ansmit Data

O

AC4

P8_20

MODE11

p r2_mii 1_txd1

MII1 Tr ansmit Data

O

AC7

P8_25

MODE11

p r2_mii 1_txd0

MII1 Tr ansmit Data

O

AC6

P8_24

MODE11

pr2 _mii_m r1_clk

MII1 R eceive Clock

I

AC9

P8_5

MODE11

p r2_mii 1_rxdv

MII1 Data Valid

I

AC3

P8_6

MODE11

p r2_mii 1_rxd3

MII1 R eceive Data

I

AC8

P8_23

MODE11

p r2_mii 1_rxd2

MII1 R eceive Data

I

AD6

P8_22

MODE11

p r2_mii 1_rxd1

MII1 R eceive Data

I

AB8

P8_3

MODE11

p r2_mii 1_rxd0

MII1 R eceive Data

I

AB5

P8_4

MODE11

end

end

end

end

end

end

end

end

User LEDs

There are 5 User Programmable LEDs on BeagleBone® AI. These are connected to GPIO pins on the processor.

beaglebone ai connector placement

The table shows the signals used to control the LEDs from the processor. Each LED is user programmable. However, there is a Default Functions assigned in the device tree for BeagleBone® AI:

LED

GPIO SIGNAL

DEFAULT FUNCTION

D2

GPIO3_17

Heartbeat When Linux is Running

D3

GPIO5_5

microSD Activity

D4

GPIO3_15

CPU Activity

D5

GPIO3_14

eMMC Activity

D8

GPIO3_7

WiFi/Bluetooth Activity