Connector and Pins for MS14
From Wiki for Dragino Project
2x8 Router Connector
| PIN | Function |
|---|---|
| VDD33 | 3.3 V power output |
| VDD5_LDO | 5V power output |
| COLD_RESET | COLD_RESET, used to reset ms14. |
| GND | GND |
| GPIO20 | GPIO20, SLIC_FS_IN, I2S_SD |
| GPIO19 | GPIO19, SLIC_FS_OUT, I2S_WS |
| GPIO22 | GPIO22, SLIC_DATA_IN, I2S_MICIN |
| GPIO21 | GPIO21, SLIC_DATA_OUT, I2S_MCK |
| GPIO23 | GPIO23, SPDIF_OUT |
| GPIO18 | GPIO18, SLIC_CLK, I2S_CK |
| GND | GND |
| GPIO24 | GPIO24 |
| UART_RX | UART_RX |
| UART_TX | UART_TX |
| RAW_VCC | Connect to POWER Input net |
| SENSOR_LED | Connect to SENSOR_LED, active LOW |
2 x 7 Sensor Connector
POS1 ~ POS12 To Sensor OUT screw terminal. With 5V ESD protect
2 x 5 JTAG Connector
| PIN | Function |
|---|---|
| GPIO26 | GPIO26 |
| GPIO27 | GPIO27 |
| JTAG_TMS | JTAG_TMS |
| JTAG_TCK | JTAG_TCK |
| JTAG_TDI | JTAG_TDI |
| JTAG_TDO | JTAG_TDO |
| GPIO15 | GPIO15 |
| GPIO16 | GPIO16 |
COLD_RESET pin
MS14 has a COLD_RESET pin which can reset itself via hardware. This can be used for hardware watchdog to reset the ms14 in case there is software issue.
The COLD_RESET pin is in the 2x8 connector and active level of this pin is low. Since MS14 already has a pull up resistor for this pin. In the daughter board design, developer only needs to connect the IO pins from MCU to this COLD_RESET pin directly and control it via daughter board
