3.2.5 PIOs
The following sections depict all the signals connected to the SAM9X60D1G MPU ports.
See Table 3-1 for details about each port’s functions.
Some of the ports were multiplexed to accommodate more devices on the evaluation kit and to showcase all the functions the SAM9X60D1G MPU can address off a single PIO wire.
Most of the ports that share multiple functions are split through passive resistors placed on the board as close to the MPU as possible, therefore no other hardware change must be made. In most cases, the user can use only one of their functions at a time, or can develop a composite driver enabling the use of multiple functions at the same time.
| Pad | Power Rail | Function | I/O Type |
|---|---|---|---|
| PA0 | VDD_3V3 | MBUS_TWD | TWI Data (TWD) bidirectional line shared between the mikroBUS, EEPROMs and external 40-pin connector |
| VDD_3V3 | EEPROM_TWD | ||
| VDD_3V3 | RPI_TWD | ||
| PA1 | VDD_3V3 | MBUS_TWCK | TWI Clock (TWCK) output line shared between the mikroBUS, EEPROMs and external 40-pin connector |
| VDD_3V3 | EEPROM_TWCK | ||
| VDD_3V3 | RPI_TWCK | ||
| PA2 | VDD_3V3 | SDMMC1_DAT1 | Data 1 bidirectional line going to the SD card connector |
| PA3 | VDD_3V3 | SDMMC1_DAT2 | Data 2 bidirectional line going to the SD card connector |
| PA4 | VDD_3V3 | SDMMC1_DAT3 | Data 3 bidirectional line going to the SD card connector |
| PA5 | VDD_3V3 | CAN1_TX | CAN Transmit output line going to the second CAN transceiver MCP2542 |
| PA6 | VDD_3V3 | CAN1_RX | CAN Receive input line going to the second CAN transceiver MCP2542 |
| PA7 | VDD_3V3 | RPI_NPCS0 | SPI Chip Select 0 output line for the external 40-pin connector |
| PA8 | VDD_3V3 | MBUS_NPCS | SPI Chip Select 0 output line for the mikroBUS connector |
| VDD_3V3 | RPI_NPCS1 | SPI Chip Select 1 output line for the external 40-pin connector | |
| PA9 | VDD_3V3 | DBGU_RX | DEBUG UART Receive (DRX) input line |
| VDD_3V3 | CAN0_RX | CAN Receive input line going to the first CAN transceiver MCP2542 | |
| PA10 | VDD_3V3 | DBGU_TX | DEBUG UART Transmit (DTX) output line |
| VDD_3V3 | CAN0_TX | CAN Transmit output line going to the first CAN transceiver MCP2542 | |
| PA11 | VDD_3V3 | SDMMC1_DAT0 | Data 0 bidirectional line going to the SD card connector |
| PA12 | VDD_3V3 | SDMMC1_CMD | Command (CMD) bidirectional line going to the SD card connector |
| PA13 | VDD_3V3 | SDMMC1_CK | Clock (CLK) output line going to the SD card connector |
| PA14 | VDD_3V3 | SDMMC1_WP | Write protect (WP) input line going to the SD card connector |
| PA15 | VDD_3V3 | SDMMC0_DAT0 | Data 0 bidirectional line going to the μSD card connector |
| PA16 | VDD_3V3 | SDMMC0_CMD | Command (CMD) bidirectional line going to the μSD card connector |
| PA17 | VDD_3V3 | SDMMC0_CK | Clock (CLK) output line going to the μSD card connector |
| PA18 | VDD_3V3 | SDMMC0_DAT1 | Data 1 bidirectional line going to the μSD card connector |
| PA19 | VDD_3V3 | SDMMC0_DAT2 | Data 2 bidirectional line going to the μSD card connector |
| PA20 | VDD_3V3 | SDMMC0_DAT3 | Data 3 bidirectional line going to the μSD card connector |
| PA21 | VDD_3V3 | MBUS_MISO | SPI Host Input Client Output (MISO) input line shared between the mikroBUS and external 40-pin connectors |
| VDD_3V3 | RPI_MISO | ||
| PA22 | VDD_3V3 | MBUS_MOSI | SPI Host Output Client Input (MOSI) output line shared between the mikroBUS and external 40-pin connectors |
| VDD_3V3 | RPI_MOSI | ||
| PA23 | VDD_3V3 | MBUS_SCLK | SPI Clock (SCLK) output line shared between the mikroBUS and external 40-pin connectors |
| VDD_3V3 | RPI_SCLK | ||
| PA24 | VDD_3V3 | RPI_GPIO1 | GPIO going to the external 40-pin connector |
| PA25 | VDD_3V3 | SDMMC0_CD | Card Detect input line going to the μSD card connector |
| PA26 | VDD_3V3 | USBB_OVCUR | USBB over current flag input |
| VDD_3V3 | RPI_GPIO17 | GPIO going to the external 40-pin connector | |
| PA27 | VDD_3V3 | USBA_VBUS_DETECT | USBA VBUS detect input |
| VDD_3V3 | RPI_GPIO27 | GPIO going to the external 40-pin connector | |
| PA28 | VDD_3V3 | USBC_OVCUR | USBC over current flag input |
| VDD_3V3 | RPI_GPIO22 | GPIO going to the external 40-pin connector | |
| PA29 | VDD_3V3 | USER_BUTTON | GPIO used as input to probe the changes of the user button |
| VDD_3V3 | RPI_GPIO24 | GPIO going to the external 40-pin connector | |
| PA30 | VDD_3V3 | LCD_TWD | TWI Data (TWD) bidirectional line going to the LCD connector |
| PA31 | VDD_3V3 | LCD_TWCK | TWI Clock (TWCK) output line going to the LCD connector |
| PB0 | VDD_3V3 | ETH0_RX0 | RMII Ethernet Receive Data 0 signal going to KSZ8081 |
| PB1 | VDD_3V3 | ETH0_RX1 | RMII Ethernet Receive Data 1 signal going to KSZ8081 |
| PB2 | VDD_3V3 | ETH0_RXER | RMII Ethernet Receive Error signal going to KSZ8081 |
| PB3 | VDD_3V3 | ETH0_RXDV | RMII Ethernet Receive Data Valid signal going to KSZ8081 |
| PB4 | VDD_3V3 | ETH0_TXCK | RMII Ethernet Transmit Clock signal going to KSZ8081 |
| PB5 | VDD_3V3 | ETH0_MDIO | RMII Ethernet Management Data I/O signal going to KSZ8081 |
| PB6 | VDD_3V3 | ETH0_MDC | RMII Ethernet Management Data Clock signal going to KSZ8081 |
| PB7 | VDD_3V3 | ETH0_TXEN | RMII Ethernet Transmit Enable signal going to KSZ8081 |
| PB8 | VDD_3V3 | ETH0_IRQ | RMII Ethernet Interrupt Request signal going to KSZ8081 |
| PB9 | VDD_3V3 | ETH0_TX0 | RMII Ethernet Transmit Data 0 signal going to KSZ8081 |
| PB10 | VDD_3V3 | ETH0_TX1 | RMII Ethernet Transmit Data 1 signal going to KSZ8081 |
| PB11 | VDD_3V3 | RPI_GPIO5/CLK1 | GPIO going to the external 40-pin connector / Clock 1 |
| PB12 | VDD_3V3 | RPI_PWM0 | PWM0 signal output line going to the external 40-pin connector |
| PB13 | VDD_3V3 | MBUS_PWM | PWM signal output line going to the mikroBUS connector |
| PB14 | VDD_3V3 | MBUS_AN | Analog input from the mikroBUS connector |
| VDD_3V3 | RPI_GPIO13 | GPIO going to the external 40-pin connector | |
| PB15 | VDD_3V3 | MCP16501_LPM | MCP16501 Low Power Mode selection output |
| PB16 | VDD_3V3 | ETH0_NRST | RMII Ethernet Reset signal going to KSZ8081 |
| PB17 | VDD_3V3 | CAN1_STBY | GPIO used as output to place the second CAN transceivers in or out of standby |
| PB18 | VDD_3V3 | MBUS_INT | GPIO input used to signal any interrupt request from the mikroBUS connector |
| PB19 | VDD_3V3 | RPI_I2SCK | I2S Clock signal going to the external 40-pin connector |
| PB20 | VDD_3V3 | RPI_I2SWS | I2S Word Select signal going to the external 40-pin connector |
| PB21 | VDD_3V3 | RPI_I2SDIN | I2S Data IN signal going to the external 40-pin connector |
| PB22 | VDD_3V3 | RPI_I2SDOUT | I2S Data Out signal going to the external 40-pin connector |
| PB23 | VDD_3V3 | RPI_I2SMCK | I2S Host Clock signal going to the external 40-pin connector |
| PB24 | VDD_3V3 | RPI_GPIO26 | GPIO signal going to the external 40-pin connector |
| PB25 | VDD_3V3 | MPU_NRSTOUT | Output signal used to reset all the devices on the board |
| PC0 | VDD_3V3 | MBUS_TX | UART Transmit (TX) output line going to the mikroBUS connector |
| PC1 | VDD_3V3 | MBUS_RX | UART Receive (RX) input line going to the mikroBUS connector |
| PC2 | VDD_3V3 | LCD_D2 | LCD Data Output 2 (DAT2) signal going to the LCD connector |
| PC3 | VDD_3V3 | LCD_D3 | LCD Data Output 3 (DAT3) signal going to the LCD connector |
| PC4 | VDD_3V3 | LCD_D4 | LCD Data Output 4 (DAT4) signal going to the LCD connector |
| PC5 | VDD_3V3 | LCD_D5 | LCD Data Output 5 (DAT5) signal going to the LCD connector |
| PC6 | VDD_3V3 | LCD_D6 | LCD Data Output 6 (DAT6) signal going to the LCD connector |
| PC7 | VDD_3V3 | LCD_D7 | LCD Data Output 7 (DAT7) signal going to the LCD connector |
| PC8 | VDD_3V3 | SDMMC1_CD | Card Detect signal going to the SD card connector |
| VDD_3V3 | RPI_GPIO23 | GPIO going to the external 40-pin connector | |
| PC9 | VDD_3V3 | CAN0_STBY | GPIO used as output to place the first CAN transceivers in or out of standby |
| VDD_3V3 | RPI_GPIO6 | GPIO going to the external 40-pin connector | |
| PC10 | VDD_3V3 | LCD_D10 | LCD Data Output 10 (DAT10) signal going to the LCD connector |
| PC11 | VDD_3V3 | LCD_D11 | LCD Data Output 11 (DAT11) signal going to the LCD connector |
| PC12 | VDD_3V3 | LCD_D12 | LCD Data Output 12 (DAT12) signal going to the LCD connector |
| PC13 | VDD_3V3 | LCD_D13 | LCD Data Output 13 (DAT13) signal going to the LCD connector |
| PC14 | VDD_3V3 | LCD_D14 | LCD Data Output 14 (DAT14) signal going to the LCD connector |
| PC15 | VDD_3V3 | LCD_D15 | LCD Data Output 15 (DAT15) signal going to the LCD connector |
| PC16 | VDD_3V3 | RPI_TX | UART Transmit output line going to the external 40-pin connector |
| PC17 | VDD_3V3 | RPI_RX | UART Receive input line going to the external 40-pin connector |
| PC18 | VDD_3V3 | LCD_D18 | LCD Data Output 18 (DAT18) signal going to the LCD connector |
| PC19 | VDD_3V3 | LCD_D19 | LCD Data Output 19 (DAT19) signal going to the LCD connector |
| PC20 | VDD_3V3 | LCD_D20 | LCD Data Output 20 (DAT20) signal going to the LCD connector |
| PC21 | VDD_3V3 | LCD_D21 | LCD Data Output 21 (DAT21) signal going to the LCD connector |
| PC22 | VDD_3V3 | LCD_D22 | LCD Data Output 22 (DAT22) signal going to the LCD connector |
| PC23 | VDD_3V3 | LCD_D23 | LCD Data Output 23 (DAT23) signal going to the LCD connector |
| PC24 | VDD_3V3 | LCD_DISP | LCD Display ON/OFF output signal going to the LCD connector |
| PC25 | VDD_3V3 | LCD_IRQ1 | LCD maXTouch interrupt line |
| PC26 | VDD_3V3 | LCD_PWM | LCD PWM for Contrast Control output signal going to the LCD connector |
| PC27 | VDD_3V3 | LCD_VSYNC | LCD Vertical Synchronization output signal going to the LCD connector |
| PC28 | VDD_3V3 | LCD_HSYNC | LCD Horizontal Synchronization output signal going to the LCD connector |
| PC29 | VDD_3V3 | LCD_DEN | LCD Data Enable output signal going to the LCD connector |
| PC30 | VDD_3V3 | LCD_PCK | LCD Pixel Clock output signal going to the LCD connector |
| PC31 | VDD_3V3 | LCD_IRQ2 | LCD Interrupt line for other I2C devices |
| PD0 | VDD_3V3 | NAND_RE | NAND Flash Read Enable (RE) output signal going to MX30LF4G28AD-XKI |
| PD1 | VDD_3V3 | NAND_WE | NAND Flash Write Enable (OE) output signal going to MX30LF4G28AD-XKI |
| PD2 | VDD_3V3 | NAND_ALE | NAND Flash Address Latch Enable (ALE) output signal going to MX30LF4G28AD-XKI |
| PD3 | VDD_3V3 | NAND_CLE | NAND Flash Command Latch Enable (CLE) output signal going to MX30LF4G28AD-XKI |
| PD4 | VDD_3V3 | NAND_NCS | NAND Flash Chip Select (CS) output signal going to MX30LF4G28AD-XKI |
| PD5 | VDD_3V3 | NAND_RDY | NAND Flash Ready/Busy (R/B#) input signal coming from MX30LF4G28AD-XKI |
| PD6 | VDD_3V3 | NAND_D0 | NAND Flash Data 0 (D0) bidirectional signal going to MX30LF4G28AD-XKI |
| PD7 | VDD_3V3 | NAND_D1 | NAND Flash Data 1 (D1) bidirectional signal going to MX30LF4G28AD-XKI |
| PD8 | VDD_3V3 | NAND_D2 | NAND Flash Data 2 (D2) bidirectional signal going to MX30LF4G28AD-XKI |
| PD9 | VDD_3V3 | NAND_D3 | NAND Flash Data 3 (D3) bidirectional signal going to MX30LF4G28AD-XKI |
| PD10 | VDD_3V3 | NAND_D4 | NAND Flash Data 4 (D4) bidirectional signal going to MX30LF4G28AD-XKI |
| PD11 | VDD_3V3 | NAND_D5 | NAND Flash Data 5 (D5) bidirectional signal going to MX30LF4G28AD-XKI |
| PD12 | VDD_3V3 | NAND_D6 | NAND Flash Data 6 (D6) bidirectional signal going to MX30LF4G28AD-XKI |
| PD13 | VDD_3V3 | NAND_D7 | NAND Flash Data 7 (D7) bidirectional signal going to MX30LF4G28AD-XKI |
| PD14 | VDD_3V3 | LCD_ID | ID LCD module |
| PD15 | VDD_3V3 | USBC_EN | Power delivery enable signal for USBC host interface |
| PD16 | VDD_3V3 | MBUS_NRST | Reset signal for the mikroBUS connector |
| VDD_3V3 | RPI_GPIO16 | GPIO going to the external 40-pin connector | |
| PD17 | VDD_3V3 | RGBLED_RED | D1 red LED |
| PD18 | VDD_3V3 | USBB_EN | Power delivery enable signal for USBB host interface |
| VDD_3V3 | RPI_GPIO0 | GPIO going to the external 40-pin connector | |
| PD19 | VDD_3V3 | RGBLED_GREEN | D1 green LED |
| PD20 | VDD_3V3 | RPI_GPIO25 | GPIO going to the external 40-pin connector |
| PD21 | VDD_3V3 | RGBLED_BLUE | D1 blue LED |