MYZR-IMX8M-MB300 硬件介绍 =========================== 接口概览 --------- IMX8M-EK300 正面图 ~~~~~~~~~~~~~~~~~~~~ .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/1275px-IMX8M-EK300-front.png :alt: image-1275px-IMX8M-EK300-front.png IMX8M-EK300 背面图 ~~~~~~~~~~~~~~~~~~~ .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/735px-IMX8M-EK300-back.png :alt: image-735px-IMX8M-EK300-back.png IMX8M-EK300 尺寸图 ~~~~~~~~~~~~~~~~~~~ .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-size.png :alt: image-IMX8M-EK300-size.png 接口功能 --------- WIFI、BT天线 ~~~~~~~~~~~~~ | 丝印：WIFI_ANT、WIFI/BT_ANT、BT_ANT 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-WIFI_ANT.png :alt: image-IMX8M-EK300-WIFI_ANT.png .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-WIFI&BT_ANT.png :alt: image-IMX8M-EK300-WIFI&BT_ANT.png .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-BT_ANT.png :alt: image-IMX8M-EK300-BT_ANT.png TF卡 ~~~~~~ | 丝印：J5 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-TF.png :alt: image-IMX8M-EK300-TF.png 调试串口 ~~~~~~~~~ | 丝印：J1 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-debug.png :alt: image-963px-IMX8M-EK300-debug.png ========== =================== 使用的引脚 功能 ========== =================== UART1_TXD MCU调试串口数据输出 UART2_TXD CPU调试串口数据输出 UART1_RXD MCU调试串口数据接收 UART2_RXD CPU调试串口数据接收 ========== =================== MIPI_DSI接口 ~~~~~~~~~~~~~ | 丝印：J2 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-MIPI_DSI.png :alt: image-963px-IMX8M-EK300-MIPI_DSI.png +-------+------------+--------------+-------+-------------+--------------+ | 引脚 | 信号 | 描述 | 引脚 | 信号 | 描述 | +=======+============+==============+=======+=============+==============+ | J2-1 | DCDC_5V | 5V输出 | J2-16 | DSI_DN0 | DSI差分数据0 | +-------+ + +-------+-------------+--------------+ | J2-2 | | | J2-17 | GND | 数字地 | +-------+ + +-------+-------------+--------------+ | J2-3 | | | J2-18 | DSI_CKP | DSI差分时钟 | +-------+------------+--------------+-------+-------------+--------------+ | J2-4 | VDD_3V3 | 3.3V输出 | J2-19 | DSI_CKN | DSI差分时钟 | +-------+ + +-------+-------------+--------------+ | J2-5 | | | J2-20 | GND | 数字地 | +-------+------------+--------------+-------+-------------+--------------+ | J2-6 | VDD_1V8 | 1.8V输出 | J2-21 | DSI_DP1 | DSI差分数据1 | +-------+ + +-------+-------------+--------------+ | J2-7 | | | J2-22 | DSI_DN1 | DSI差分数据1 | +-------+------------+--------------+-------+-------------+--------------+ | J2-8 | SDIO_WAKE | GPIO控制 | J2-23 | GND | 数字地 | +-------+------------+--------------+-------+-------------+--------------+ | J2-9 | DSI_EN | GPIO控制 | J2-24 | DSI_DP3 | DSI差分数据3 | +-------+------------+--------------+-------+-------------+--------------+ | J2-10 | DSI_BL_PWM | GPIO控制 | J2-25 | DSI_DN3 | DSI差分数据3 | +-------+------------+--------------+-------+-------------+--------------+ | J2-11 | GND | 数字地 | J2-26 | GND | 数字地 | +-------+------------+--------------+-------+-------------+--------------+ | J2-12 | DSI_DP2 | DSI差分数据2 | J2-27 | I2C3_SCL | 触摸I2C信号 | +-------+------------+--------------+-------+-------------+--------------+ | J2-13 | DSI_DN2 | DSI差分数据2 | J2-28 | I2C3_SDA | 触摸I2C信号 | +-------+------------+--------------+-------+-------------+--------------+ | J2-14 | GND | 数字地 | J2-29 | DSI_TS_nINT | GPIO控制 | +-------+------------+--------------+-------+-------------+--------------+ | J2-15 | DSI_DP0 | DSI差分数据0 | J2-30 | DSI_TS_nRST | GPIO控制 | +-------+------------+--------------+-------+-------------+--------------+ MIPI_CSI1接口 ~~~~~~~~~~~~~~ | 丝印：J3 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-MIPI_CSI1.png :alt: image-963px-IMX8M-EK300-MIPI_CSI1.png +-------+--------------+---------------+-------+------------+--------------+ | 引脚 | 信号 | 描述 | 引脚 | 信号 | 描述 | +=======+==============+===============+=======+============+==============+ | J3-1 | DCDC_5V | 5V输出 | J3-16 | CSI_P1_DP3 | CSI差分数据3 | +-------+ + +-------+------------+--------------+ | J3-2 | | | J3-17 | CSI_P1_DN3 | CSI差分数据3 | +-------+--------------+---------------+-------+------------+--------------+ | J3-3 | VDD_1V8 | 1.8V输入 | J3-18 | GND | 数字地 | +-------+ + +-------+------------+--------------+ | J3-4 | | | J3-19 | CSI_P1_DP2 | CSI差分数据2 | +-------+--------------+---------------+-------+------------+--------------+ | J3-5 | VDD_3V3 | 3.3V输入 | J3-20 | CSI_P1_DN2 | CSI差分数据2 | +-------+ + +-------+------------+--------------+ | J3-6 | | | J3-21 | GND | 数字地 | +-------+--------------+---------------+-------+------------+--------------+ | J3-7 | GND | 数字地 | J3-22 | CSI_P1_DP1 | CSI差分数据1 | +-------+--------------+---------------+-------+------------+--------------+ | J3-8 | GND | 数字地 | J3-23 | CSI_P1_DN1 | CSI差分数据1 | +-------+--------------+---------------+-------+------------+--------------+ | J3-9 | I2C1_SDA_1V8 | I2C信号，1.8V | J3-24 | GND | 数字地 | +-------+--------------+---------------+-------+------------+--------------+ | J3-10 | I2C1_SCL_1V8 | I2C信号，1.8V | J3-25 | CSI_P1_CKP | CSI差分时钟 | +-------+--------------+---------------+-------+------------+--------------+ | J3-11 | CSI_nRST | GPIO控制 | J3-26 | CSI_P1_CKN | CSI差分时钟 | +-------+--------------+---------------+-------+------------+--------------+ | J3-12 | CSI_P1_PWDN | GPIO控制 | J3-27 | GND | 数字地 | +-------+--------------+---------------+-------+------------+--------------+ | J3-13 | GND | 数字地 | J3-28 | CSI_P1_DP0 | CSI差分数据0 | +-------+--------------+---------------+-------+------------+--------------+ | J3-14 | CSI1_CLK | CSI时钟 | J3-29 | CSI_P1_DN0 | CSI差分数据0 | +-------+--------------+---------------+-------+------------+--------------+ | J3-15 | GND | 数字地 | J3-30 | GND | 数字地 | +-------+--------------+---------------+-------+------------+--------------+ MIPI_CSI2接口 ~~~~~~~~~~~~~~~ | 丝印：J4 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-MIPI_CSI2.png :alt: image-963px-IMX8M-EK300-MIPI_CSI2.png +-------+--------------+---------------+-------+------------+--------------+ | 引脚 | 信号 | 描述 | 引脚 | 信号 | 描述 | +=======+==============+===============+=======+============+==============+ | J4-1 | DCDC_5V | 5V输出 | J4-16 | CSI_P2_DP3 | CSI差分数据3 | +-------+ + +-------+------------+--------------+ | J4-2 | | | J4-17 | CSI_P2_DN3 | CSI差分数据3 | +-------+--------------+---------------+-------+------------+--------------+ | J4-3 | VDD_1V8 | 1.8V输入 | J4-18 | GND | 数字地 | +-------+ + +-------+------------+--------------+ | J4-4 | | | J4-19 | CSI_P2_DP2 | CSI差分数据2 | +-------+--------------+---------------+-------+------------+--------------+ | J4-5 | VDD_3V3 | 3.3V输入 | J4-20 | CSI_P2_DN2 | CSI差分数据2 | +-------+ + +-------+------------+--------------+ | J4-6 | | | J4-21 | GND | 数字地 | +-------+--------------+---------------+-------+------------+--------------+ | J4-7 | GND | 数字地 | J4-22 | CSI_P2_DP1 | CSI差分数据1 | +-------+--------------+---------------+-------+------------+--------------+ | J4-8 | GND | 数字地 | J4-23 | CSI_P2_DN1 | CSI差分数据1 | +-------+--------------+---------------+-------+------------+--------------+ | J4-9 | I2C2_SDA_1V8 | I2C信号，1.8V | J4-24 | GND | 数字地 | +-------+--------------+---------------+-------+------------+--------------+ | J4-10 | I2C1_SCL_1V8 | I2C信号，1.8V | J4-25 | CSI_P2_CKP | CSI差分时钟 | +-------+--------------+---------------+-------+------------+--------------+ | J4-11 | CSI_nRST | GPIO控制 | J4-26 | CSI_P2_CKN | CSI差分时钟 | +-------+--------------+---------------+-------+------------+--------------+ | J4-12 | CSI_P2_PWDN | GPIO控制 | J4-27 | GND | 数字地 | +-------+--------------+---------------+-------+------------+--------------+ | J4-13 | GND | 数字地 | J4-28 | CSI_P2_DP0 | CSI差分数据0 | +-------+--------------+---------------+-------+------------+--------------+ | J4-14 | CSI2_CLK | CSI时钟 | J4-29 | CSI_P2_DN0 | CSI差分数据0 | +-------+--------------+---------------+-------+------------+--------------+ | J4-15 | GND | 数字地 | J4-30 | GND | 数字地 | +-------+--------------+---------------+-------+------------+--------------+ PCIe 1x接口 ~~~~~~~~~~~~~ | 丝印：J6 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-PCIe_1x.png :alt: image-963px-IMX8M-EK300-PCIe_1x.png +--------+------------+--------------+--------+-------------------+--------------+ | 引脚 | 信号 | 描述 | 引脚 | 信号 | 描述 | +========+============+==============+========+===================+==============+ | J6-1B | VPCIe_12V | 12V电源 | J6-1A | GND | 数字地 | +--------+ + +--------+-------------------+--------------+ | J6-2B | | | J6-2A | VPCIe_12V | 12V电源 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-3B | NC | | J6-3A | VPCIe_12V | 12V电源 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-4B | GND | 数字地 | J6-4A | GND | 数字地 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-5B | I2C2_SCL | I2C信号 | J6-5A | NC | | +--------+------------+--------------+--------+-------------------+--------------+ | J6-6B | I2C2_SDA | I2C信号 | J6-6A | NC | | +--------+------------+--------------+--------+-------------------+--------------+ | J6-7B | GND | 数字地 | J6-7A | NC | | +--------+------------+--------------+--------+-------------------+--------------+ | J6-8B | VDD_3V3 | 3.3V电源 | J6-8A | NC | | +--------+------------+--------------+--------+-------------------+--------------+ | J6-9B | NC | | J6-9A | VDD_3V3 | 3.3V电源 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-10B | VDD_3V3 | 3.3V电源 | J6-10A | VDD_3V3 | 3.3V电源 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-11B | GPIO1_IO04 | GPIO控制 | J6-11A | SAI2_RXC | GPIO控制 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-12B | NC | | J6-12A | GND | 数字地 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-13B | GND | 数字地 | J6-13A | PCIE1_REF_CLKP_CN | PCIE参考时钟 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-14B | PCIE1_TXP | PCIE数据输出 | J6-14A | PCIE1_REF_CLKN_CN | PCIE参考时钟 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-15B | PCIE1_TXN | PCIE数据输出 | J6-15A | GND | 数字地 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-16B | GND | 数字地 | J6-16A | PCIE1_RXP | PCIE数据接收 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-17B | SAI2_RXD | GPIO控制 | J6-17A | PCIE1_RXN | PCIE数据接收 | +--------+------------+--------------+--------+-------------------+--------------+ | J6-18B | GND | 数字地 | J6-18A | GND | 数字地 | +--------+------------+--------------+--------+-------------------+--------------+ Audio接口 ~~~~~~~~~~~ | 丝印：P1 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-Audio.png :alt: image-963px-IMX8M-EK300-Audio.png ========== ================ 使用的引脚 功能 ========== ================ SAI2_MCLK 主时钟 SAI2_TXC 数字音频位时钟 SAI2_TXFS SAI2_TXFS SAI2_TXD 数字音频数据输出 AUD_nMUTE 静音使能 ========== ================ JTAG接口 ~~~~~~~~~~ | 丝印：J10 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-JTAG.png :alt: image-963px-IMX8M-EK300-JTAG.png ====== ======== ============ ===== ======= ======== 引脚 信号 描述 引脚 信号 描述 ====== ======== ============ ===== ======= ======== J10-2 JTAG_TMS JTAG模式选择 J10-1 VDD_3V3 3.3V电源 J10-4 JTAG_TCK JTAG时钟输入 J10-3 GND 数字地 J10-6 JTAG_TDO JTAG数据输出 J10-5 GND 数字地 J10-8 JTAG_TDI JTAG数据输入 J10-7 VNC J10-10 POR_B 复位 J10-9 GND 数字地 ====== ======== ============ ===== ======= ======== HDMI接口 ~~~~~~~~~ | 丝印：J11 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-HDMI1.png :alt: image-IMX8M-EK300-HDMI1.png .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-HDMI2.png :alt: image-963px-IMX8M-EK300-HDMI2.png ========== ============= ============ ================ 使用的引脚 功能 使用的引脚 功能 ========== ============= ============ ================ HDMI_AUXP 辅助功能接口 HDMI_TXN2 HDMI差分数据2 HDMI_AUXN 辅助功能接口 HDMI_TXP1 HDMI差分数据1 HDMI_TXP0 HDMI差分数据0 HDMI_TXN1 HDMI差分数据1 HDMI_TXN0 HDMI差分数据0 HDMI_DDC_SDA DDC数据信号 HDMI_CLKP HDMI差分时钟 HDMI_DDC_SCL DDC时钟信号 HDMI_CLKN HDMI差分时钟 HDMI_HPD 热插拔检测 HDMI_TXP2 HDMI差分数据2 HDMI_CEC HDMI消费电子协议 ========== ============= ============ ================ BOOT MODE开关 ~~~~~~~~~~~~~~ | 丝印：SW1 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-BOOT_MODE.png :alt: image-IMX8M-EK300-BOOT_MODE.png +----------+-----+-----+ | 模式控制 | 1位 | 2位 | +----------+-----+-----+ | 烧写模式 | 0 | 1 | +----------+-----+-----+ | 启动模式 | 1 | 0 | +----------+-----+-----+ BOOT CFG开关 ~~~~~~~~~~~~~~ | 丝印：SW3 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-BOOT_CFG.png :alt: image-IMX8M-EK300-BOOT_CFG.png +----------+-----+-----+-----+-----+ | 启动控制 | 1位 | 2位 | 3位 | 4位 | +----------+-----+-----+-----+-----+ | eMMC | 0 | 0 | 1 | 0 | +----------+-----+-----+-----+-----+ | SD | 1 | 1 | 0 | 0 | +----------+-----+-----+-----+-----+ 复位开关 ~~~~~~~~~ | 丝印：SW2 | 功能：按下复位 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-RESET.png :alt: image-963px-IMX8M-EK300-RESET.png Mini-PCIe/4G &SIM卡 ~~~~~~~~~~~~~~~~~~~~~ +--------------+------+-------------------------------------------+ | 名称 | 丝印 | 接口属性 | +--------------+------+-------------------------------------------+ | mini-PCIE/4G | J14 | miniPCIE标准接口，PCIe 2.0标准,支持4G模块 | +--------------+------+-------------------------------------------+ | SIM卡座 | CON1 | 4G SIM卡座 | +--------------+------+-------------------------------------------+ | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-MINI_PCIE.png :alt: image-963px-IMX8M-EK300-MINI_PCIE.png .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-SIM_CARD.png :alt: image-IMX8M-EK300-SIM_CARD.png ================= ================ ========== ================ 使用的引脚 功能 使用的引脚 功能 ================= ================ ========== ================ PCIe_nWAKE PCIE唤醒 PCIE2_TXP PCIE差分数据输出 PCIe_nCLKREQ PCIE时钟请求 PCIe_nDIS PCIE禁止控制 PCIE2_REF_CLKN_CN PCIE差分参考时钟 PCIe_nRST PCIE总线复位 PCIE2_REF_CLKP_CN PCIE差分参考时钟 I2C3_SCL I2C时钟 PCIE2_RXN PCIE差分数据输入 I2C3_SDA I2C数据 PCIE2_RXP PCIE差分数据输入 3G_USBDM USB差分信号 PCIE2_TXN PCIE差分数据输出 3G_USBDP USB差分信号 ================= ================ ========== ================ 风扇接口 ~~~~~~~~~ | 丝印：J13 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-FAN.png :alt: image-IMX8M-EK300-FAN.png 扩展IO接口 ~~~~~~~~~~~ | 丝印：J12 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-EXP_CN.png :alt: image-963px-IMX8M-EK300-EXP_CN.png +--------+---------------+--------+------------+ | 引脚 | 信号 | 引脚 | 信号 | +--------+---------------+--------+------------+ | J12-1 | SPDIF_TX | J12-2 | UART4_RXD | +--------+---------------+--------+------------+ | J12-3 | SPDIF_RX | J12-4 | UART4_TXD | +--------+---------------+--------+------------+ | J12-5 | SPDIF_EXT_CLK | J12-6 | SAI1_MCLK | +--------+---------------+--------+------------+ | J12-7 | I2C3_SCL | J12-8 | JTAG_NTRST | +--------+---------------+--------+------------+ | J12-9 | I2C3_SDA | J12-10 | SAI1_TXD2 | +--------+---------------+--------+------------+ | J12-11 | NAND_nWP | J12-12 | SAI1_TXD6 | +--------+---------------+--------+------------+ | J12-13 | NAND_nWE | J12-14 | SA12_RXD | +--------+---------------+--------+------------+ | J12-15 | NAND_DATA4 | J12-16 | SA12_RXC | +--------+---------------+--------+------------+ | J12-17 | NAND_DATA1 | J12-18 | SA12_RXFS | +--------+---------------+--------+------------+ | J12-19 | NAND_nREADY | J12-20 | SAI1_TXD4 | +--------+---------------+--------+------------+ | J12-21 | NAND_DATA6 | J12-22 | SAI1_TXD3 | +--------+---------------+--------+------------+ | J12-23 | NAND_DATA7 | J12-24 | SAI1_TXD5 | +--------+---------------+--------+------------+ | J12-25 | SAI3_MCLK | J12-26 | SAI1_TXD7 | +--------+---------------+--------+------------+ | J12-27 | SAI3_RXC | J12-28 | SAI1_TXD0 | +--------+---------------+--------+------------+ | J12-29 | SAI3_RXFS | J12-30 | SAI1_RXD5 | +--------+---------------+--------+------------+ | J12-31 | DCDC_5V | J12-32 | SAI1_TXD1 | +--------+ +--------+------------+ | J12-33 | | J12-34 | SAI1_TXC | +--------+ +--------+------------+ | J12-35 | | J12-36 | SAI1_RXD2 | +--------+ +--------+------------+ | J12-37 | | J12-38 | SAI1_TXFS | +--------+ +--------+------------+ | J12-39 | | J12-40 | SAI1_RXD6 | +--------+---------------+--------+------------+ | J12-41 | VSYS | J12-42 | SAI1_RXD7 | +--------+ +--------+------------+ | J12-43 | | J12-44 | SAI1_RXD0 | +--------+ +--------+------------+ | J12-45 | | J12-46 | SAI1_RXC | +--------+ +--------+------------+ | J12-47 | | J12-48 | SAI1_RXD3 | +--------+ +--------+------------+ | J12-49 | | J12-50 | SAI1_RXD4 | +--------+---------------+--------+------------+ | J12-51 | GND | J12-52 | SAI5_RXD2 | +--------+ +--------+------------+ | J12-53 | | J12-54 | SAI5_RXD1 | +--------+ +--------+------------+ | J12-55 | | J12-56 | SAI5_MCLK | +--------+ +--------+------------+ | J12-57 | | J12-58 | SAI1_RXFS | +--------+ +--------+------------+ | J12-59 | | J12-60 | SAI5_RXFS | +--------+ +--------+------------+ | J12-61 | | J12-62 | SAI5_RXD3 | +--------+ +--------+------------+ | J12-63 | | J12-64 | SAI5_RXD0 | +--------+ +--------+------------+ | J12-65 | | J12-66 | SAI5_RXC | +--------+ +--------+------------+ | J12-67 | | J12-68 | ONOFF | +--------+ +--------+------------+ | J12-69 | | J12-70 | GPIO1_IO04 | +--------+ +--------+------------+ | J12-71 | | J12-72 | NAND_nCE3 | +--------+---------------+--------+------------+ | J12-73 | NAND_DATA5 | J12-74 | NAND_DATAO | +--------+---------------+--------+------------+ | J12-75 | NAND_DATA3 | J12-76 | NAND NCE2 | +--------+---------------+--------+------------+ | J12-77 | NAND_DATA2 | J12-78 | NAND_ALE | +--------+---------------+--------+------------+ | J12-79 | USB1_SS_SEL | J12-80 | NAND_nCE0 | +--------+---------------+--------+------------+ 主电源开关 ~~~~~~~~~~~ | 丝印：SW4 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-POWER_SW.png :alt: image-963px-IMX8M-EK300-POWER_SW.png 主电源输入 ~~~~~~~~~~~ | 丝印：J19 | 接口属性：内正外负插孔，12V电压 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-POWER_IN.png :alt: image-963px-IMX8M-EK300-POWER_IN.png Bootloader接口 ~~~~~~~~~~~~~~~ | 丝印：J15 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-BOOTLOADER.png :alt: image-IMX8M-EK300-BOOTLOADER.png ========== =============== 使用的引脚 功能 ========== =============== USB1_VBUS VBUS检测 USB1_DN USB差分数据 USB1_DP USB差分数据 USB1_RXN USB差分数据输入 USB1_RXP USB差分数据输入 USB1_TXN USB差分数据输出 USB1_TXP USB差分数据输出 ========== =============== USB扩展串口RS-485&RS-232 ~~~~~~~~~~~~~~~~~~~~~~~~~ | 丝印：J17 | 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/IMX8M-EK300-UART.png :alt: image-IMX8M-EK300-UART.png ========= =============== ========= =============== 引脚 信号 引脚 信号 ========= =============== ========= =============== RS232_TX1 RS-232信号输出 RS232_RX1 RS-232信号接收 RS232_TX2 RS-232信号输出 RS232_RX2 RS-233信号接收 RS482_A1 RS-485差分信号+ RS482_B1 RS-485差分信号- RS482_A2 RS-485差分信号+ RS482_B2 RS-485差分信号- ========= =============== ========= =============== USB扩展双USB HOST ~~~~~~~~~~~~~~~~~~ | 丝印：J18 | 接口属性：USB2扩展USB2.0&USB3.0，USB TYPE-A接口 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-USB.png :alt: image-963px-IMX8M-EK300-USB.png 以太网接口 ~~~~~~~~~~~ | 丝印：J16 | 接口属性：RGMII，支持10/100/1000M 引脚及信号定义如下： .. figure:: /image/MYZR-iMX8系列/MYZR-IMX8M-EK300/963px-IMX8M-EK300-ETH.png :alt: image-963px-IMX8M-EK300-ETH.png