底板硬件手册 ============= 接口概览 -------- **正面图** .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/1500px-Myrk3288_mb314_1.1.0.1.jpg :alt: 1500px-Myrk3288_mb314_1.1.0.1.jpg **背面图** .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/1500px-Myrk3288_mb314_1.2.0.1.jpg :alt: 1500px-Myrk3288_mb314_1.2.0.1.jpg 接口功能 -------- 串口 ~~~~~~ +------+----------+------------------+ | 丝印 | 功能 | 接口属性 | +======+==========+==================+ | P4 | 调试串口 | 3线标准RS232接口 | +------+----------+------------------+ | P3 | 功能串口 | 3线标准RS232接口 | +------+----------+------------------+ .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.1.0.1.png :alt: 963px-Myrk3288_mb314_2.1.0.1.png **U20** ====== ============ ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ====== ============ ====== ============ U20-1 C1+ U20-2 C1+ U20-3 C1- U20-4 V- U20-5 C2- U20-6 V- U20-7 T2OUT U20-8 R2IN U20-9 R2OUT U20-10 T2IN U20-11 T1IN U20-12 R1OUT U20-13 R1IN U20-14 T1OUT U20-15 GND U20-16 VCC ====== ============ ====== ============ GPS ~~~~~~ | 丝印: U24 | 模块型号：NEO-6M | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.2.0.1.png :alt: 963px-Myrk3288_mb314_2.2.0.1.png ====== ============ ========= ============ 引脚 功能信号名称 引脚 功能信号名称 ====== ============ ========= ============ U24-1 Reserved1 U24-2 NC U24-3 TIMEPULSE U24-4 EXTINT0 U24-5 USB_DM U24-6 USB_DP U24-7 VDDUSB U24-8 Reserved2 U24-9 VCC_RF U24-10 GND1 U24-11 RF_IN U24-12 GND2 U24-13 GND3 U24-14~19 NC U24-20 TXD1 U24-21 RXD1 U24-22 V_BCKP U24-23 VCC U24-24 GND ====== ============ ========= ============ TF卡座 ~~~~~~~~ | 丝印: U22 | 接口属性：标准TF卡座 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.3.0.1.png :alt: 963px-Myrk3288_mb314_2.3.0.1.png ====== ============ ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ====== ============ ====== ============ U22-1 SDMMC_D2 U22-2 SDMMC_D3 U22-3 SDMMC_CMD U22-4 VDD U22-5 SDMMC_CLK U22-6 VSS U22-7 SDMMC_D0 U22-8 SDMMC_D1 U22-9 SDMMC_DET U22-10 GND_01 U22-11 GND_02 U22-12 GND_03 U22-13 GND_04 ====== ============ ====== ============ HDMI ~~~~~~ | 丝印：J14 | 接口属性：HDMI-1.4标准接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.4.0.1.png :alt: 963px-Myrk3288_mb314_2.4.0.1.png ====== ============ ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ====== ============ ====== ============ J14-1 HDMI_TX2P J14-11 CK_SHIELD J14-2 D2_SHIELD J14-12 HDMI_TXCN J14-3 HDMI_TX2N J14-13 HDMI_CEC J14-4 HDMI_TX1P J14-14 HEC J14-5 D1_SHIELD J14-15 12C_CLK J14-6 HDMI_TX1N J14-16 12C_DADT J14-7 HDMI_TX0P J14-17 GND J14-8 D0_SHIELD J14-18 +5V J14-9 HDMI_TX0N J14-19 HOT_PLUG_DET J14-10 HDMI_TXCP G1-G4 HDMI_CHASSIS ====== ============ ====== ============ CIF ~~~~~~ | 丝印：J17 | 接口属性：CIF摄像头接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.5.0.1.png :alt: 963px-Myrk3288_mb314_2.5.0.1.png ====== ============ ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ====== ============ ====== ============ J17-1 NC J17-13 CIF_CLKOUT J17-2 GND J17-14 CIF_D6 J17-3 CIF_SDA J17-15 GND J17-4 VCC28_DVP J17-16 CIF_D5 J17-5 CIF_SCL J17-17 CIF_CLKIN J17-6 CIF_RST J17-18 CIF_D4 J17-7 CIF_VSYNC J17-19 CIF_D0 J17-8 CIF_PDN0 J17-20 CIF_D3 J17-9 CIF_HRER J17-21 CIF_D1 J17-10 C_DVDD J17-22 CIF_D2 J17-11 VCC18_DVP J17-23 NC J17-12 CIF_D7 J17-24 NC ====== ============ ====== ============ MIPI-CSI ~~~~~~~~~~ | 丝印：J19 | 接口属性：MIPI-CSI摄像头接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.6.0.1.png :alt: 963px-Myrk3288_mb314_2.6.0.1.png ====== ============ ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ====== ============ ====== ============ J19-1 NC J19-16 MIPI_RX_D3P J19-2 VCC_2V8 J19-17 GND J19-4 VCC18_DVP J19-19 MIPI_RX_D2P J19-5 NC J19-20 MIPI_RX_D2N J19-6 GND J19-21 GND J19-7 VCC28_DVP J19-22 MIPI_RX_D1P J19-8 GND J19-23 MIPI_RX_D1N J19-9 CSI2-SDA J19-24 GND J19-10 CSI2-SCL J19-25 MIPI_CLKP J19-11 MIPI_RST_1V8 J19-26 MIPI_CLKN J19-12 PWDN1 J19-27 GND J19-13 GND J19-28 MIPI_RX_D0P J19-14 MIPI_CLKIN J19-29 MIPI_RX_D0N J19-15 GND J19-30 GND ====== ============ ====== ============ SINGEL LVDS ~~~~~~~~~~~~~~ | 丝印：J8 | 接口属性：单路LVDS接口，用于连接MYZR-LCD_LVDS液晶板 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/Myrk3288_mb314_2.7.0.1.png :alt: Myrk3288_mb314_2.7.0.1.png ===== ============ ======== ============ 引脚 功能信号名称 引脚 功能信号名称 ===== ============ ======== ============ J8-1 LVDS_D1N J8-14 LVDS_CLK0P J8-2 LVDS_D1P J8-15 GND J8-3 GND J8-16 GPIO_B5 J8-4 LVDS_D0P J8-17 GPIO_B6 J8-5 LVDS_D0N J8-18 GND J8-6 GND J8-19 LCDC_BL J8-7 LVDS_D3N J8-20 GND J8-8 LVDS_D3P J8-21 TOUCH_SCL J8-9 GND J8-22 TOUCH_SDA J8-10 LVDS_D2P J8-23~25 GND J8-11 LVDS_D2N J8-26~30 5V_IN J8-12 GND 8-31~40 NC J8-13 LVDS_CLK0N ===== ============ ======== ============ EDP ~~~~~ | 丝印：J7 | 接口属性：EDP屏接口，用于连接15.6寸EDP显示屏 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/Myrk3288_mb314_2.8.0.1.png :alt: Myrk3288_mb314_2.8.0.1.png ===== ============ ===== ============ 引脚 功能信号名称 引脚 功能信号名称 ===== ============ ===== ============ J7-1 NC J7-16 GND J7-2 GND J7-17 EDP_HPD J7-3 EDP_TX1N J7-18 GND J7-4 EDP_TX1P J7-19 GND J7-5 GND J7-20 GND J7-6 EDP_TX0N J7-21 GND J7-7 EDP_TX0P J7-22 BL_EN J7-8 GND J7-23 EDP_BL J7-9 EDPAUXP J7-24 NC J7-10 EDPAUXN J7-25 NC J7-11 GND J7-26 BL_12V J7-12 GEN_3V3 J7-27 BL_12V J7-13 GEN_3V3 J7-28 BL_12V J7-14 NC J7-29 BL_12V J7-15 GND J7-30 GND ===== ============ ===== ============ BL ~~~~ | 丝印：J5 | 接口属性：背光12V输出，用于给设备外接屏供给12V背光电压 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/Myrk3288_mb314_2.9.0.1.png :alt: Myrk3288_mb314_2.9.0.1.png ==== ============ ==== ============ 引脚 功能信号名称 引脚 功能信号名称 ==== ============ ==== ============ J5-1 GND J5-4 BL_EN J5-2 GND J5-5 BL_12V J5-3 EDP_BL J5-6 BL_12V ==== ============ ==== ============ DUAL LVDS ~~~~~~~~~~~ | 丝印：J9 | 接口属性：双路LVDS接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.10.0.1.png :alt: 963px-Myrk3288_mb314_2.10.0.1.png +-------+--------------+-------+--------------+ | 引脚 | 功能信号名称 | 引脚 | 功能信号名称 | +=======+==============+=======+==============+ | J9-1 | 5V IN | J9-2 | 5V IN | +-------+--------------+-------+--------------+ | J9-3 | 5V IN | J9-4 | GND | +-------+--------------+-------+--------------+ | J9-5 | GND | J9-6 | GND | +-------+--------------+-------+--------------+ | J9-7 | LVDS_D0N | J9-8 | LVDS_D0P | +-------+--------------+-------+--------------+ | J9-9 | LVDS_D1N | J9-10 | LVDS_D1P | +-------+--------------+-------+--------------+ | J9-11 | LVDS_D2N | J9-12 | LVDS_D2P | +-------+--------------+-------+--------------+ | J9-13 | GND | J9-14 | GND | +-------+--------------+-------+--------------+ | J9-15 | LVDS_CLK0N | J9-16 | LVDS_CLK0P | +-------+--------------+-------+--------------+ | J9-17 | LVDS_D3N | J9-18 | LVDS_D3P | +-------+--------------+-------+--------------+ | J9-19 | LVDS_D5N | J9-20 | LVDS_D5P | +-------+--------------+-------+--------------+ | J9-21 | LVDS_D6N | J9-22 | LVDS_D6P | +-------+--------------+-------+--------------+ | J9-23 | LVDS_D7N | J9-24 | LVDS_D7P | +-------+--------------+-------+--------------+ | J9-25 | GND | J9-26 | GND | +-------+--------------+-------+--------------+ | J9-27 | LVDS_CLK1N | J9-28 | LVDS_CLK1P | +-------+--------------+-------+--------------+ | J9-29 | LVDS_D8N | J9-30 | LVDS_D8P | +-------+--------------+-------+--------------+ HP JACK ~~~~~~~~~ | 丝印：P15 | 接口属性：音频接口，用于耳机音频输出以及MIC输入 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.11.0.1.png :alt: 963px-Myrk3288_mb314_2.11.0.1.png U32 ===== ============ ====== =============== 引脚 功能信号名称 引脚 功能信号名称 ===== ============ ====== =============== U32-1 12S0_CLK U32-6 12S0_SDO0 U32-2 AUD_3V3 U32-7 12S0_LRCK_RX/TX U32-3 AUD_3V3 U32-8 12S0_SDI U32-4 AAGND U32-27 CODEC_12C_DAT U32-5 12S0_SCLK U32-28 CODEC_12C_CLK ===== ============ ====== =============== OTG ~~~~~ | 丝印： J1 | 接口属性：USB OTG接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.12.0.1.png :alt: 963px-Myrk3288_mb314_2.12.0.1.png ==== ============ ==== ============ 引脚 功能信号名称 引脚 功能信号名称 ==== ============ ==== ============ J1-1 OTG_DET J1-6 GND J1-2 OTG_DM J1-7 GND J1-3 OTG_DP J1-8 GND J1-4 OTG_ID J1-9 GND J1-5 GND ==== ============ ==== ============ USB HOST ~~~~~~~~~~ | 丝印：J10 | 接口属性：双层USB接口，通过LAN9514扩展出来的host接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.13.0.1.png :alt: 963px-Myrk3288_mb314_2.13.0.1.png ===== ============ ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ===== ============ ====== ============ J10-1 PWR1 J10-7 USBSN_DP2_B J10-2 USBSN_DM1_B J10-8 GND J10-3 USBSN_DP1_B J10-9 GND J10-4 GND J10-10 GND J10-5 PWR2 J10-11 GND J10-6 USBSN_DM2_B J10-12 GND ===== ============ ====== ============ 10M/100M Ethernet ~~~~~~~~~~~~~~~~~~~ | 丝印：P1 | 接口属性：标准百兆网接口，通过LAB9514扩展出来的以太网接口，10M/100M自适应 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.14.0.1.png :alt: 963px-Myrk3288_mb314_2.14.0.1.png ==== ============ ===== =============== 引脚 功能信号名称 引脚 功能信号名称 ==== ============ ===== =============== P1-1 TXP0 P1-7 NC P1-2 TXN0 P1-8 GND P1-3 RXP0 P1-9 GEN_3V3 P1-4 GND P1-10 nSPD_LED_GPIO2 P1-5 GEN_3V3 P1-11 nLNKA_LED_GPIO2 P1-6 RXN0 P1-12 GEN_3V3 ==== ============ ===== =============== USB to WIFI ~~~~~~~~~~~~~~ | 丝印：U26 | 模块型号：UM12BS | 模块描述：USB转WIFI | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.15.0.1.png :alt: 963px-Myrk3288_mb314_2.15.0.1.png ===== ============ ===== ============ 引脚 功能信号名称 引脚 功能信号名称 ===== ============ ===== ============ U26-1 GND U26-4 USBDN_DM3_B U26-2 ANTENNA_1 U26-5 USBDN_DP3_B U26-3 GEN_3V3 U26-6 GND ===== ============ ===== ============ 1000M Ethernet ~~~~~~~~~~~~~~~~~ | 丝印：U13 | 接口属性：千兆以太网接口，10M/100M/1000M自适应 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.16.0.1.png :alt: 963px-Myrk3288_mb314_2.16.0.1.png ===== ============ ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ===== ============ ====== ============ U13-1 TEST_POINT U13-8 NRGMI_D_P U13-2 RGMI_A_P U13-9 RGMI_D_N U13-3 RGMI_A_N U13-10 GND U13-4 RGMI_B_P U13-11 RGMI_3V3_A U13-5 RGMI_C_P U13-12 RGMI_LED2 U13-6 RGMI_C_N U13-13 RGMI_LED1 U13-7 RGMI_B_N U13-14 RGMI_3V3_A ===== ============ ====== ============ 3G/4G ~~~~~~~~ | 丝印：J13 | 接口属性：标准mini-PCIE接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.17.0.1.png :alt: 963px-Myrk3288_mb314_2.17.0.1.png ======= ============ ====== ============= 引脚 功能信号名称 引脚 功能信号名称 ======= ============ ====== ============= J13-1 NC J13-2 GEN_3V3 J13-3 NC J13-4 GND J13-5 NC J13-6 NC J13-7 NC J13-8 PCLE_UIM_PWR J13-9 GND J13-10 PCLE_UIM_DATA J13-11 NC J13-12 PCLE_UIM_CLK J13-13 NC J13-14 PCLE_UIM_RST JJ13-15 GND J13-16 PCLE_UIM_VPP J13-17 NC J13-18 GND J13-19 NC J13-20 NC J13-21 GND J13-22 NC J13-23 NC J13-24 NC J13-25 NC J13-26 GND J13-27 GND J13-28 NC J13-29 GND J13-30 NC J13-31 NC J13-32 NC J13-33 NC J13-34 GND J13-35 GND J13-36 USB_D- J13-37 GND J13-38 USB_D+ J13-39 GEN_3V3 J13-40 GND J13-41 GEN_3V3 J13-42 LED_WWAN_B J13-43 GND J13-44 NC J13-45 NC J13-46 NC J13-47 NC J13-48 NC J13-49 NC J13-50 GND J13-51 NC J13-52 GEN_3V3 ======= ============ ====== ============= 电压跳线选择 ~~~~~~~~~~~~ | 丝印：J15 | 接口属性：5V/3.3V跳线 .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.18.0.1.png :alt: 963px-Myrk3288_mb314_2.18.0.1.png USB to UART ~~~~~~~~~~~~ | 丝印：J16 | 接口属性：USB扩展UART接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.19.0.1.png :alt: 963px-Myrk3288_mb314_2.19.0.1.png ====== ============ ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ====== ============ ====== ============ J16-1 GEN_3V3 J16-2 GEN_3V3 J16-3 USB_TXD J16-4 USB_RXD J16-5 USB_nRTS J16-6 USB_nCTS J16-7 USB_nDTR J16-8 USB_nDSR J16-11 NC J16-12 NC J16-13 USB_CBUS0 J16-14 USB_CBUS1 J16-15 USB_CBUS2 J16-16 USB_CBUS3 J16-17 USB_CBUS4 J16-18 NC J16-19 GND J16-20 GND ====== ============ ====== ============ WIFI ~~~~~~ | 丝印: E1 | 接口属性：标准WIFI天线座 .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.20.0.1.png :alt: 963px-Myrk3288_mb314_2.20.0.1.png DC IN ~~~~~~~ | 丝印: J3 | 接口属性：外部5V主电源输入，2.5A .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/Myrk3288_mb314_2.21.0.1.png :alt: Myrk3288_mb314_2.21.0.1.png 电源开关 ~~~~~~~~~ | 丝印: J2 | 接口属性：主电源开关 | 状态属性：—，闭合，O，断开 .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/Myrk3288_mb314_2.22.0.1.png :alt: Myrk3288_mb314_2.22.0.1.png 12V IN ~~~~~~~~ | 丝印：J4 | 接口属性：外部12V输入 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.23.0.1.png :alt: 963px-Myrk3288_mb314_2.23.0.1.png ==== ============ ==== ============ 引脚 功能信号名称 引脚 功能信号名称 ==== ============ ==== ============ J4-1 BL_12V J4-3 GND J4-2 BL_12V J4-4 GND ==== ============ ==== ============ RESET ~~~~~~~ | 丝印: SW4 | 按键属性：复位按键 .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.24.0.1.png :alt: 963px-Myrk3288_mb314_2.24.0.1.png SLEEP WAKE ~~~~~~~~~~~~ | 丝印: SW3 | 按键属性：系统开关机按键，长按1秒开机，长按3秒关机 .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.25.0.1.png :alt: 963px-Myrk3288_mb314_2.25.0.1.png VOL + ~~~~~~~ | 丝印: SW2 | 按键属性：控制音量（音量加） .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.26.0.1.png :alt: 963px-Myrk3288_mb314_2.26.0.1.png VOL – ~~~~~~~~ 丝印: SW1 按键属性：控制音量（音量减） .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.27.0.1.png :alt: 963px-Myrk3288_mb314_2.27.0.1.png RECOVER ~~~~~~~~ | 丝印: SW5 | 按键属性：烧写按键，与开机键(SW3)同时按下，进入烧写模式 .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.28.0.1.png :alt: 963px-Myrk3288_mb314_2.28.0.1.png 扩展接口 ~~~~~~~~~ | 丝印：J11 | 接口属性：空闲管脚，用于扩展应用 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.29.0.1.png :alt: 963px-Myrk3288_mb314_2.29.0.1.png ====== ============= ====== ============ 引脚 功能信号名称 引脚 功能信号名称 ====== ============= ====== ============ J11-1 5V_IN J11-2 GEN_3V3 J11-3 5V_IN J11-4 GEN_3V3 J11-5 NC J11-6 HSIC_DATA J11-7 LIGHT_INT J11-8 HSIC_STROBE J11-9 GSEN_INT J11-10 CABC_EN J11-11 TOUCH_INT J11-12 FLASH_EN J11-13 LCD_RST J11-14 SPK_CTL J11-15 LCD_EN J11-16 PMUGPIO0_B5 J11-17 TOUCH_RST J11-18 OTG_VBUS_DRV J11-19 FLASH_TRIGOUT J11-20 PMUGPIO0_B5 J11-21 GPIO7_B1 J11-22 EFUSE_PWR J11-23 NC J11-24 GND J11-25 5V_DRV J11-26 ADC_1N1 J11-27 GPIO5_C2 J11-28 GND J11-29 UART1_RST J11-30 ADC_1N0 J11-31 SPI0_CSn1 J11-32 GND J11-33 SPI0_RXD J11-34 SPI2_MOS1 J11-35 SPI0_TXD J11-36 SPI2_nCS0 J11-37 SPI0_CSn0 J11-38 SPI2_MISO J11-39 GND J11-40 GND J11-41 SPI0_CLK J11-42 SPI2_CLK J11-43 GND J11-44 GND J11-45 UART1_CTS J11-46 FLASH0_RDY J11-47 GND J11-48 FLASH0_CLE J11-49 SPDIF_TX J11-50 FLASH0_ALE J11-51 GND J11-52 FLASH0_CS0 J11-53 GND J11-54 GND J11-55 GND J11-56 GND ====== ============= ====== ============ JTAG ~~~~~~ | 丝印：U19 | 接口属性：JTAG接口 | 引脚及信号定义： .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.30.0.1.png :alt: 963px-Myrk3288_mb314_2.30.0.1.png ===== ======== ============ ====== ==== ======== 引脚 信号 描述 引脚 信号 描述 ===== ======== ============ ====== ==== ======== U19-1 JTAG_TCK 测试时钟输入 U19-2 GND 数字地 U19-3 JTAG_TDO 测试数据输出 U19-4 VCC 3.3V输入 U19-5 JTAG_TMS 测试模式选择 U19-6 nRST 复位 U19-7 NC 未连接 U19-8 NC 未连接 U19-9 JTAG_TDI 测试数据输入 U19-10 GND 数字地 ===== ======== ============ ====== ==== ======== RTC电池座 ~~~~~~~~~~~ | 丝印:BT1 | 接口属性：RTC纽扣电池接口 .. image:: /image/MYZR-瑞芯微系列/MYZR-RK3288-EK314/963px-Myrk3288_mb314_2.31.0.1.png :alt: 963px-Myrk3288_mb314_2.31.0.1.png MXM314 ~~~~~~~~ | 丝印:U14 | 接口属性：核心板接口，用于连接MYZR-RK3288_CB314核心板 | 管脚功能定义详见 :doc:`./MYZR-RK3288-CB314 硬件介绍`