SPRUIF3B May 2017 – March 2019 DRA790 , DRA791 , DRA793 , DRA797
Table 12 lists the I/O expander map.
Device | Slave Address | I2C I/F | Expander I/O | Netname | Description |
---|---|---|---|---|---|
EXP1 | 0b0010 000
(0x20) |
I2C1 | INT Number | PCF8575_INT | Interrupt output to SoC |
P0 | TS_LCD_GPIO1 | Push-button switch 1 | |||
P1 | TS_LCD_GPIO2 | Push-button switch 2 | |||
P2 | TS_LCD_GPIO3 | Push-button switch 3 | |||
P3 | TS_LCD_GPIO4 | Push-button switch 4 | |||
P4 | USER_LED1 | User LED 1 | |||
P5 | USER_LED2 | User LED 2 | |||
P6 | USER_LED3 | User LED 3 | |||
P7 | USER_LED4 | User LED 4 | |||
P10 | EXP_ETH0_RSTn | RGMII0 reset | |||
P11 | EXP_ETH1_RSTn | RGMII1 reset | |||
P12 | USB1-VBUS_OCN | USB1 overcurrent indication | |||
P13 | USB2-VBUS_OCN | USB2 overcurrent indication | |||
P14 | PCI_SW_RESETn | PCI interface software reset | |||
P15 | CON_LCD_PWR_DN | LCD board master power enable | |||
P16 | USB1-VBUS_DET | USB1 VBUS detection | |||
P17 | USB2-VBUS_DET | USB2 VBUS detection | |||
EXP2 | 0b0010 001
(0x21) |
I2C1 | INT Number | PCF8575_INT | Interrupt output to SoC |
P0 | SEL_GPMC_AD_VID_S0 | MUX out control signal for GPMC versus VOUT3B versus VIN1A | |||
P1 | USB1_ID | USB1 ID PIN | |||
P2 | USB2_ID | USB2 ID PIN | |||
P3 | SEL_I2C3_CAN2 | MUX out control signal for I2C3 versus DCAN2 | |||
P4 | SEL_ENET_MUX_S0 | MUX out control signal for RGMII0 versus VIN | |||
P5 | MMC_PWR_ON | Power on regulator to MMC card | |||
P6 | NOR_ALT_ADDRn | MUX out control signals for alternate location of GPMC control signals | |||
P7 | SEL_GPMC_AD_VID_S2 | MUX out control signal for GPMC versus VOUT3B versus VIN1A | |||
P10 | NAND_BOOTn | NAND boot chip select enable signal | |||
P11 | NOR_BOOTn | NOR boot chip select enable signal | |||
P12 | MMC2_BOOT | MUX out control signal for GPMC versus MMC2 | |||
P13 | PFC_VPP_ENn | Enable for VPP power supply | |||
P14 | VOUT2_S0 | MUX out control signal for EMU versus VIN2A versus VOUT2 | |||
P15 | MCASP1_ENn | COM8 interface level shifter enable signal | |||
P16 | SEL_UART3_SPI2 | MUX out control signal for UART3 versus SPI2 | |||
P17 | VOUT2_S1 | MUX out control signal for EMU versus VIN2A versus VOUT2 | |||
EXP3 | 0b0010 010
(0x26) |
I2C5 | P0 | PM_OEn | Enable to connect PM Bus with I2C3 |
P1 | VIN6_SEL_S0 | MUX out control signal for VIN6A and McASPx | |||
P2 | VIN2_S0 | MUX out control signal for EMAC1 and VIN2A signals | |||
P3 | PM_SEL | Selection to connect I2C3 to either PM bus 1 or 2 | |||
P4 | HDMI_CT_HPD | HDMI hot plug detect | |||
P5 | HDMI_LS_OE | HDMI level shifter enable | |||
P6 | VIN2_S2 | MUX out control signal for VIN2A versus expansion signals | |||
P7 | CAN_STB | CAN transceiver standby | |||
P10 | SEL_CSI2n | MUX out control signal for CSI2 configuration | |||
P11 | EXVIN2_S0 | MUX out control signal for EMAC1 versus VIN2A versus expansion signals | |||
P12 | EXVIN2_S2 | MUX out control signal for EMAC1 versus VIN2A versus expansion signals | |||
P13 | MMC3_SEL | MUX out control signal for MMC3 versus VIN2B | |||
P14 | MMC2_BOOT_OVR_OEN | MMC2 DIP switch override enable | |||
P15 | MMC2_BOOT_OVR | MMC2 DIP switch override | |||
P16 | NOR_BOOT_OVR_OEN | NOR BOOT DIP switch override enable | |||
P17 | NOR_BOOT_OVR | NOR BOOT DIP switch override |