J1 debug UART
3.3 V logic-level console, with ground on J1-1. J1-4 · UART0_RXD, J1-5 · UART0_TXD.
BeagleBone Black Rev C pinout
BeagleBone Black Rev C with a Sitara AM3358, two expansion headers and a dedicated serial debug header.
BeagleBone Black Rev C
98 contacts Current packageBeagleBone Black Rev C pinout
P9 expansion header
P8 expansion header
J1 serial debug header
P8-31 · UART5_CTSN
Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V4: 0 lcd_data14, 1 gpmc_a18, 2 eQEP1_index, 3 mcasp0_axr1, 4 uart5_rxd, 6 uart5_ctsn, 7 gpio0[10].
All 98 pins
| Pin | Signal | Direction | Function |
|---|---|---|---|
| P9-1 | GND Return | Return | Board ground return. |
| P9-2 | GND Return | Return | Board ground return. |
| P9-3 | DC_3.3V Supply rail | Supply rail | Board power rail. Verify the correct voltage and available current before attaching a load. |
| P9-4 | DC_3.3V Supply rail | Supply rail | Board power rail. Verify the correct voltage and available current before attaching a load. |
| P9-5 | VDD_5V DC input rail | DC input rail | Direct 5 V DC supply rail. This guide powers the board through the barrel jack. |
| P9-6 | VDD_5V DC input rail | DC input rail | Direct 5 V DC supply rail. This guide powers the board through the barrel jack. |
| P9-7 | SYS_5V Supply rail | Supply rail | Board power rail. Verify the correct voltage and available current before attaching a load. |
| P9-8 | SYS_5V Supply rail | Supply rail | Board power rail. Verify the correct voltage and available current before attaching a load. |
| P9-9 | PWR_BUT Board control | Board control | Use the board-specific control circuit. Leave this contact alone during normal power and serial setup. |
| P9-10 | SYS_RESETn Board control | Board control | Use the board-specific control circuit. Leave this contact alone during normal power and serial setup. AM335x pad and mux modes · A10. |
| P9-11 | UART4_RXD Input / mux | Input / mux | Receive input in the named UART mode. Use a 3.3 V logic-level endpoint for the bench example. AM335x pad and mux modes · T17: 0 gpmc_wait0, 1 mii2_crs, 2 gpmc_csn4, 3 rmii2_crs_dv, 4 mmc1_sdcd, 6 uart4_rxd_mux2, 7 gpio0[30]. |
| P9-12 | GPIO1_28 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U18: 0 gpmc_be1n, 1 mii2_col, 2 gpmc_csn6, 3 mmc2_dat3, 4 gpmc_dir, 6 mcasp0_aclkr_mux3, 7 gpio1[28]. |
| P9-13 | UART4_TXD Output / mux | Output / mux | Output in the named peripheral mode. Check board pinmux before use. AM335x pad and mux modes · U17: 0 gpmc_wpn, 1 mii_rxerr, 2 gpmc_csn5, 3 rmii2_rxerr, 4 mmc2_sdcd, 6 uart4_txd_mux2, 7 gpio0[31]. |
| P9-14 | EHRPWM1A Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U14: 0 gpmc_a2, 1 mii2_txd3, 2 rgmii2_td3, 3 mmc2_dat1, 4 gpmc_a18, 6 ehrpwm1A_mux1, 7 gpio1[18]. |
| P9-15 | GPIO1_16 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R13: 0 gpmc_a0, 1 gmii2_txen, 2 rmii2_tctl, 3 mii2_txen, 4 gpmc_a16, 6 ehrpwm1_tripzone_input, 7 gpio1[16]. |
| P9-16 | EHRPWM1B Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T14: 0 gpmc_a3, 1 mii2_txd2, 2 rgmii2_td2, 3 mmc2_dat2, 4 gpmc_a19, 6 ehrpwm1B_mux1, 7 gpio1[19]. |
| P9-17 | I2C1_SCL Multiplexed | Multiplexed | Part of a board peripheral interface. Follow the signal assignment and I/O voltage. AM335x pad and mux modes · A16: 0 spi0_cs0, 1 mmc2_sdwp, 2 I2C1_SCL, 3 ehrpwm0_synci, 4 pr1_uart0_txd, 7 gpio0[5]. |
| P9-18 | I2C1_SDA Multiplexed | Multiplexed | Part of a board peripheral interface. Follow the signal assignment and I/O voltage. AM335x pad and mux modes · B16: 0 spi0_d1, 1 mmc1_sdwp, 2 I2C1_SDA, 3 ehrpwm0_tripzone, 4 pr1_uart0_rxd, 7 gpio0[4]. |
| P9-19 | I2C2_SCL Multiplexed | Multiplexed | Part of a board peripheral interface. Follow the signal assignment and I/O voltage. AM335x pad and mux modes · D17: 0 uart1_rtsn, 1 timer5, 2 dcan0_rx, 3 I2C2_SCL, 4 spi1_cs1, 5 pr1_uart0_rts_n, 7 gpio0[13]. |
| P9-20 | I2C2_SDA Multiplexed | Multiplexed | Part of a board peripheral interface. Follow the signal assignment and I/O voltage. AM335x pad and mux modes · D18: 0 uart1_ctsn, 1 timer6, 2 dcan0_tx, 3 I2C2_SDA, 4 spi1_cs0, 5 pr1_uart0_cts_n, 7 gpio0[12]. |
| P9-21 | UART2_TXD Output / mux | Output / mux | Output in the named peripheral mode. Check board pinmux before use. AM335x pad and mux modes · B17: 0 spi0_d0, 1 uart2_txd, 2 I2C2_SCL, 3 ehrpwm0B, 4 pr1_uart0_rts_n, 6 EMU3_mux1, 7 gpio0[3]. |
| P9-22 | UART2_RXD Input / mux | Input / mux | Receive input in the named UART mode. Use a 3.3 V logic-level endpoint for the bench example. AM335x pad and mux modes · A17: 0 spi0_sclk, 1 uart2_rxd, 2 I2C2_SDA, 3 ehrpwm0A, 4 pr1_uart0_cts_n, 6 EMU2_mux1, 7 gpio0[2]. |
| P9-23 | GPIO1_17 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V14: 0 gpmc_a1, 1 gmii2_rxdv, 2 rgmii2_rxdv, 3 mmc2_dat0, 4 gpmc_a17, 6 ehrpwm0_synco, 7 gpio1[17]. |
| P9-24 | UART1_TXD Output / mux | Output / mux | Output in the named peripheral mode. Check board pinmux before use. AM335x pad and mux modes · D15: 0 uart1_txd, 1 mmc2_sdwp, 2 dcan1_rx, 3 I2C1_SCL, 5 pr1_uart0_txd, 6 pr1_pru0_pru_r31_16, 7 gpio0[15]. |
| P9-25 | GPIO3_21 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · A14: 0 mcasp0_ahclkx, 1 eQEP0_strobe, 2 mcasp0_axr3, 3 mcasp1_axr1, 4 EMU4_mux2, 5 pr1_pru0_pru_r30_7, 6 pr1_pru0_pru_r31_7, 7 gpio3[21]. |
| P9-26 | UART1_RXD Input / mux | Input / mux | Receive input in the named UART mode. Use a 3.3 V logic-level endpoint for the bench example. AM335x pad and mux modes · D16: 0 uart1_rxd, 1 mmc1_sdwp, 2 dcan1_tx, 3 I2C1_SDA, 5 pr1_uart0_rxd, 6 pr1_pru1_pru_r31_16, 7 gpio0[14]. |
| P9-27 | GPIO3_19 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · C13: 0 mcasp0_fsr, 1 eQEP0B_in, 2 mcasp0_axr3, 3 mcasp1_fsx, 4 EMU2_mux2, 5 pr1_pru0_pru_r30_5, 6 pr1_pru0_pru_r31_5, 7 gpio3[19]. |
| P9-28 | SPI1_CS0 Multiplexed | Multiplexed | Part of a board peripheral interface. Follow the signal assignment and I/O voltage. AM335x pad and mux modes · C12: 0 mcasp0_ahclkr, 1 ehrpwm0_synci, 2 mcasp0_axr2, 3 spi1_cs0, 4 eCAP2_in_PWM2_out, 5 pr1_pru0_pru_r30_3, 6 pr1_pru0_pru_r31_3, 7 gpio3[17]. |
| P9-29 | SPI1_D0 Multiplexed | Multiplexed | Part of a board peripheral interface. Follow the signal assignment and I/O voltage. AM335x pad and mux modes · B13: 0 mcasp0_fsx, 1 ehrpwm0B, 3 spi1_d0, 4 mmc1_sdcd_mux1, 5 pr1_pru0_pru_r30_1, 6 pr1_pru0_pru_r31_1, 7 gpio3[15]. |
| P9-30 | SPI1_D1 Multiplexed | Multiplexed | Part of a board peripheral interface. Follow the signal assignment and I/O voltage. AM335x pad and mux modes · D12: 0 mcasp0_axr0, 1 ehrpwm0_tripzone, 3 spi1_d1, 4 mmc2_sdcd_mux1, 5 pr1_pru0_pru_r30_2, 6 pr1_pru0_pru_r31_2, 7 gpio3[16]. |
| P9-31 | SPI1_SCLK Multiplexed | Multiplexed | Part of a board peripheral interface. Follow the signal assignment and I/O voltage. AM335x pad and mux modes · A13: 0 mcasp0_aclkx, 1 ehrpwm0A, 3 spi1_sclk, 4 mmc0_sdcd_mux1, 5 pr1_pru0_pru_r30_0, 6 pr1_pru0_pru_r31_0, 7 gpio3[14]. |
| P9-32 | VADC Supply rail | Supply rail | Board power rail. Verify the correct voltage and available current before attaching a load. |
| P9-33 | AIN4 Analog input | Analog input | ADC input. Keep the signal between analog ground and 1.8 V. AM335x pad and mux modes · C8. |
| P9-34 | AGND Return | Return | Analog reference ground for the ADC inputs. |
| P9-35 | AIN6 Analog input | Analog input | ADC input. Keep the signal between analog ground and 1.8 V. AM335x pad and mux modes · A8. |
| P9-36 | AIN5 Analog input | Analog input | ADC input. Keep the signal between analog ground and 1.8 V. AM335x pad and mux modes · B8. |
| P9-37 | AIN2 Analog input | Analog input | ADC input. Keep the signal between analog ground and 1.8 V. AM335x pad and mux modes · B7. |
| P9-38 | AIN3 Analog input | Analog input | ADC input. Keep the signal between analog ground and 1.8 V. AM335x pad and mux modes · A7. |
| P9-39 | AIN0 Analog input | Analog input | ADC input. Keep the signal between analog ground and 1.8 V. AM335x pad and mux modes · B6. |
| P9-40 | AIN1 Analog input | Analog input | ADC input. Keep the signal between analog ground and 1.8 V. AM335x pad and mux modes · C7. |
| P9-41 | CLKOUT2 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · D14: 0 xdma_event_intr1, 2 tclkin, 3 clkout2, 4 timer7_mux1, 5 pr1_pru0_pru_r31_16, 6 EMU3_mux0, 7 gpio0[20] | D13: 0 mcasp0_axr1, 1 eQEP0_index, 3 mcasp1_axr0, 4 emu3, 5 pr1_pru0_pru_r30_6, 6 pr1_pru0_pru_r31_6, 7 gpio3[20]. This contact connects to two processor pads. Configure only one as an output. |
| P9-42 | GPIO0_7 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · C18: 0 eCAP0_in_PWM0_out, 1 uart3_txd, 2 spi1_cs1, 3 pr1_ecap0_ecap_capin_apwm_o, 4 spi1_sclk, 5 mmc0_sdwp, 6 xdma_event_intr2, 7 gpio0[7] | B12: 0 mcasp0_aclkr, 1 eQEP0A_in, 2 mcasp0_axr2, 3 mcasp1_aclkx, 5 pr1_pru0_pru_r30_4, 6 pr1_pru0_pru_r31_4, 7 gpio3[18]. This contact connects to two processor pads. Configure only one as an output. |
| P9-43 | GND Return | Return | Board ground return. |
| P9-44 | GND Return | Return | Board ground return. |
| P9-45 | GND Return | Return | Board ground return. |
| P9-46 | GND Return | Return | Board ground return. |
| P8-1 | GND Return | Return | Board ground return. |
| P8-2 | GND Return | Return | Board ground return. |
| P8-3 | GPIO1_6 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R9: 0 gpmc_ad6, 1 mmc1_dat6, 7 gpio1[6]. |
| P8-4 | GPIO1_7 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T9: 0 gpmc_ad7, 1 mmc1_dat7, 7 gpio1[7]. |
| P8-5 | GPIO1_2 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R8: 0 gpmc_ad2, 1 mmc1_dat2, 7 gpio1[2]. |
| P8-6 | GPIO1_3 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T8: 0 gpmc_ad3, 1 mmc1_dat3, 7 gpio1[3]. |
| P8-7 | TIMER4 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R7: 0 gpmc_advn_ale, 2 timer4, 7 gpio2[2]. |
| P8-8 | TIMER7 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T7: 0 gpmc_oen_ren, 2 timer7, 7 gpio2[3]. |
| P8-9 | TIMER5 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T6: 0 gpmc_be0n_cle, 2 timer5, 7 gpio2[5]. |
| P8-10 | TIMER6 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U6: 0 gpmc_wen, 2 timer6, 7 gpio2[4]. |
| P8-11 | GPIO1_13 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R12: 0 gpmc_ad13, 1 lcd_data18, 2 mmc1_dat5, 3 mmc2_dat1, 4 eQEP2B_in, 6 pr1_pru0_pru_r30_15, 7 gpio1[13]. |
| P8-12 | GPIO1_12 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T12: 0 gpmc_ad12, 1 lcd_data19, 2 mmc1_dat4, 3 mmc2_dat0, 4 eQEP2a_in, 6 pr1_pru0_pru_r30_14, 7 gpio1[12]. |
| P8-13 | EHRPWM2B Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T10: 0 gpmc_ad9, 1 lcd_data22, 2 mmc1_dat1, 3 mmc2_dat5, 4 ehrpwm2B, 7 gpio0[23]. |
| P8-14 | GPIO0_26 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T11: 0 gpmc_ad10, 1 lcd_data21, 2 mmc1_dat2, 3 mmc2_dat6, 4 ehrpwm2_tripzone_in, 7 gpio0[26]. |
| P8-15 | GPIO1_15 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U13: 0 gpmc_ad15, 1 lcd_data16, 2 mmc1_dat7, 3 mmc2_dat3, 4 eQEP2_strobe, 6 pr1_pru0_pru_r31_15, 7 gpio1[15]. |
| P8-16 | GPIO1_14 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V13: 0 gpmc_ad14, 1 lcd_data17, 2 mmc1_dat6, 3 mmc2_dat2, 4 eQEP2_index, 6 pr1_pru0_pru_r31_14, 7 gpio1[14]. |
| P8-17 | GPIO0_27 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U12: 0 gpmc_ad11, 1 lcd_data20, 2 mmc1_dat3, 3 mmc2_dat7, 4 ehrpwm0_synco, 7 gpio0[27]. |
| P8-18 | GPIO2_1 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V12: 0 gpmc_clk_mux0, 1 lcd_memory_clk, 2 gpmc_wait1, 3 mmc2_clk, 6 mcasp0_fsr, 7 gpio2[1]. |
| P8-19 | EHRPWM2A Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U10: 0 gpmc_ad8, 1 lcd_data23, 2 mmc1_dat0, 3 mmc2_dat4, 4 ehrpwm2A, 7 gpio0[22]. |
| P8-20 | GPIO1_31 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V9: 0 gpmc_csn2, 1 gpmc_be1n, 2 mmc1_cmd, 5 pr1_pru1_pru_r30_13, 6 pr1_pru1_pru_r31_13, 7 gpio1[31]. |
| P8-21 | GPIO1_30 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U9: 0 gpmc_csn1, 1 gpmc_clk, 2 mmc1_clk, 5 pr1_pru1_pru_r30_12, 6 pr1_pru1_pru_r31_12, 7 gpio1[30]. |
| P8-22 | GPIO1_5 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V8: 0 gpmc_ad5, 1 mmc1_dat5, 7 gpio1[5]. |
| P8-23 | GPIO1_4 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U8: 0 gpmc_ad4, 1 mmc1_dat4, 7 gpio1[4]. |
| P8-24 | GPIO1_1 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V7: 0 gpmc_ad1, 1 mmc1_dat1, 7 gpio1[1]. |
| P8-25 | GPIO1_0 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U7: 0 gpmc_ad0, 1 mmc1_dat0, 7 gpio1[0]. |
| P8-26 | GPIO1_29 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V6: 0 gpmc_csn0, 7 gpio1[29]. |
| P8-27 | GPIO2_22 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U5: 0 lcd_vsync, 1 gpmc_a8, 5 pr1_pru1_pru_r30_8, 6 pr1_pru1_pru_r31_8, 7 gpio2[22]. |
| P8-28 | GPIO2_24 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V5: 0 lcd_pclk, 1 gpmc_a10, 5 pr1_pru1_pru_r30_10, 6 pr1_pru1_pru_r31_10, 7 gpio2[24]. |
| P8-29 | GPIO2_23 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R5: 0 lcd_hsync, 1 gpmc_a9, 5 pr1_pru1_pru_r30_9, 6 pr1_pru1_pru_r31_9, 7 gpio2[23]. |
| P8-30 | GPIO2_25 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R6: 0 lcd_ac_bias_en, 1 gpmc_a11, 7 gpio2[25]. |
| P8-31 | UART5_CTSN Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V4: 0 lcd_data14, 1 gpmc_a18, 2 eQEP1_index, 3 mcasp0_axr1, 4 uart5_rxd, 6 uart5_ctsn, 7 gpio0[10]. |
| P8-32 | UART5_RTSN Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T5: 0 lcd_data15, 1 gpmc_a19, 2 eQEP1_strobe, 3 mcasp0_ahclkx, 4 mcasp0_axr3, 6 uart5_rtsn, 7 gpio0[11]. |
| P8-33 | UART4_RTSN Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V3: 0 lcd_data13, 1 gpmc_a17, 2 eQEP1B_in, 3 mcasp0_fsr, 4 mcasp0_axr3, 6 uart4_rtsn, 7 gpio0[9]. |
| P8-34 | UART3_RTSN Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U4: 0 lcd_data11, 1 gpmc_a15, 2 ehrpwm1B, 3 mcasp0_ahclkr, 4 mcasp0_axr2, 6 uart3_rtsn, 7 gpio2[17]. |
| P8-35 | UART4_CTSN Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · V2: 0 lcd_data12, 1 gpmc_a16, 2 eQEP1A_in, 3 mcasp0_aclkr, 4 mcasp0_axr2, 6 uart4_ctsn, 7 gpio0[8]. |
| P8-36 | UART3_CTSN Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · U3: 0 lcd_data10, 1 gpmc_a14, 2 ehrpwm1A, 3 mcasp0_axr0, 6 uart3_ctsn, 7 gpio2[16]. |
| P8-37 | UART5_TXD Output / mux | Output / mux | Output in the named peripheral mode. Check board pinmux before use. AM335x pad and mux modes · U1: 0 lcd_data8, 1 gpmc_a12, 2 ehrpwm1_tripzone_in, 3 mcasp0_aclkx, 4 uart5_txd, 6 uart2_ctsn, 7 gpio2[14]. |
| P8-38 | UART5_RXD Input / mux | Input / mux | Receive input in the named UART mode. Use a 3.3 V logic-level endpoint for the bench example. AM335x pad and mux modes · U2: 0 lcd_data9, 1 gpmc_a13, 2 ehrpwm0_synco, 3 mcasp0_fsx, 4 uart5_rxd, 6 uart2_rtsn, 7 gpio2[15]. |
| P8-39 | GPIO2_12 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T3: 0 lcd_data6, 1 gpmc_a6, 3 eQEP2_index, 5 pr1_pru1_pru_r30_6, 6 pr1_pru1_pru_r31_6, 7 gpio2[12]. |
| P8-40 | GPIO2_13 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T4: 0 lcd_data7, 1 gpmc_a7, 3 eQEP2_strobe, 4 pr1_edio_data_out7, 5 pr1_pru1_pru_r30_7, 6 pr1_pru1_pru_r31_7, 7 gpio2[13]. |
| P8-41 | GPIO2_10 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T1: 0 lcd_data4, 1 gpmc_a4, 3 eQEP2A_in, 5 pr1_pru1_pru_r30_4, 6 pr1_pru1_pru_r31_4, 7 gpio2[10]. |
| P8-42 | GPIO2_11 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · T2: 0 lcd_data5, 1 gpmc_a5, 3 eQEP2B_in, 5 pr1_pru1_pru_r30_5, 6 pr1_pru1_pru_r31_5, 7 gpio2[11]. |
| P8-43 | GPIO2_8 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R3: 0 lcd_data2, 1 gpmc_a2, 3 ehrpwm2_tripzone_in, 5 pr1_pru1_pru_r30_2, 6 pr1_pru1_pru_r31_2, 7 gpio2[8]. |
| P8-44 | GPIO2_9 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R4: 0 lcd_data3, 1 gpmc_a3, 3 ehrpwm0_synco, 5 pr1_pru1_pru_r30_3, 6 pr1_pru1_pru_r31_3, 7 gpio2[9]. |
| P8-45 | GPIO2_6 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R1: 0 lcd_data0, 1 gpmc_a0, 3 ehrpwm2A, 5 pr1_pru1_pru_r30_0, 6 pr1_pru1_pru_r31_0, 7 gpio2[6]. |
| P8-46 | GPIO2_7 Multiplexed | Multiplexed | Board connector signal. Enable its peripheral or GPIO function in the operating system when the board supports it. AM335x pad and mux modes · R2: 0 lcd_data1, 1 gpmc_a1, 3 ehrpwm2B, 5 pr1_pru1_pru_r30_1, 6 pr1_pru1_pru_r31_1, 7 gpio2[7]. |
| J1-1 | GND Return | Return | Board ground return. |
| J1-2 | NC Reserved | Reserved | Leave this contact open in the documented bench connections. |
| J1-3 | NC Reserved | Reserved | Leave this contact open in the documented bench connections. |
| J1-4 | UART0_RXD Input / mux | Input / mux | Receive input in the named UART mode. Use a 3.3 V logic-level endpoint for the bench example. |
| J1-5 | UART0_TXD Output / mux | Output / mux | Output in the named peripheral mode. Check board pinmux before use. |
| J1-6 | NC Reserved | Reserved | Leave this contact open in the documented bench connections. |
Signal assignments
P9 I²C2 / cape bus
Reserve the onboard cape EEPROM address range. P9-19 · I2C2_SCL, P9-20 · I2C2_SDA.
P9 I²C1
Set the device tree to route I²C1 to these contacts. P9-17 · I2C1_SCL, P9-18 · I2C1_SDA.
ADC
ADC inputs are limited to 0–1.8 V referenced to AGND. P9-32 · VADC, P9-33 · AIN4, P9-34 · AGND, P9-35 · AIN6, P9-36 · AIN5, P9-37 · AIN2, P9-38 · AIN3, P9-39 · AIN0, P9-40 · AIN1.
Electrical limits
| Parameter | Limit | Conditions and source |
|---|---|---|
| DC jack supply5.0 V ±0.25 V | 5.0 V ±0.25 V | Use a 5 V, 2 A, 2.1 mm center-positive adapter. BeagleBone Black SRM, Connectors and BeagleBoard power supplies |
| Expansion logic3.3 V | 3.3 V | Apply signals only while the board is powered. Do not drive the expansion GPIO with 5 V. BeagleBone Black SRM, Connectors |
| ADC signal limit0–1.8 V | 0–1.8 V | Use analog ground at P9-34. The P9-32 reference rail is 1.8 V. BeagleBone Black SRM, Connectors |
Models and documents
The map covers Rev C P8, P9 and J1. Pinmux modes are processor alternatives. Check the running device tree and onboard eMMC/HDMI usage before reassigning a line.
- BeagleBone Black Rev C
- Sitara AM3358 · P8/P9 46-position expansion headers · J1 serial header
- BeagleBone Black System Reference Manual: Connectors· Expansion-header mux tables and J1 debug serial pinout.
- BeagleBone Black hardware design· Board identification, power domains and design details.
- BeagleBoard power supplies· 5 V input supply and barrel polarity.
- Single-board computer source register· Applicability, retrieval dates, source URLs and SHA-256 digests.