SPRUIF3B May   2017  – March 2019 DRA790 , DRA791 , DRA793 , DRA797

 

  1.   DRA79x EVM CPU board
    1.     Trademarks
    2. 1 Introduction
    3. 2 Overview
      1. 2.1 EVM System Configurations
      2. 2.2 CPU Board Feature List
      3. 2.3 CPU Board Component Identification
    4. 3 Hardware
      1. 3.1 Hardware Architecture
      2. 3.2 DRA71x, DRA79x, TDA2E-17, and AM570x Processor
      3. 3.3 Power Architecture
      4. 3.4 Reset Structure
      5. 3.5 Clocks
      6. 3.6 Memory
        1. 3.6.1  SDRAM Memory
        2. 3.6.2  QSPI Flash Memory
        3. 3.6.3  EMMC Flash Memory
        4. 3.6.4  MicroSD Card Cage
        5. 3.6.5  GPMC NOR Flash Memory
        6. 3.6.6  GPMC NAND Flash Memory
        7. 3.6.7  Boot Modes
        8. 3.6.8  JTAG/Emulator and Trace
        9. 3.6.9  UART Terminal
        10. 3.6.10 DCAN and CAN Interfaces
        11. 3.6.11 Universal Serial Bus (USB)
        12. 3.6.12 Wired Ethernet
        13. 3.6.13 Video Output
          1. 3.6.13.1 HDMI Display
          2. 3.6.13.2 LCD Touch Panel
          3. 3.6.13.3 FPD-Link III Output/Panel
        14. 3.6.14 Video Input
          1. 3.6.14.1 Parallel Imaging
          2. 3.6.14.2 Serial Imaging
        15. 3.6.15 Mini-PCIe
        16. 3.6.16 Media Local Bus (MLB)
        17. 3.6.17 Audio
        18. 3.6.18 COM8 Module Interface
        19. 3.6.19 eFuse Programming Supply
        20. 3.6.20 User Interface LEDs
        21. 3.6.21 Power Monitoring
        22. 3.6.22 I2C Peripheral Map
        23. 3.6.23 GPIO List
        24. 3.6.24 I/O Expander List
        25. 3.6.25 Configuration EEPROM
    5. 4 Signal Multiplex Logic
      1. 4.1 GPMC and QSPI Selection (MUX A)
      2. 4.2 GPMC, VIN1, and VOUT3 Selection (MUX B)
      3. 4.3 GPMC and EMMC Selection (MUX C)
      4. 4.4 VIN2A and EMU Selection (MUX D, MUX E)
      5. 4.5 VIN2A and RGMII1 Selection (MUX F)
      6. 4.6 RGMII0 and VIN1B Selection (MUX J)
      7. 4.7 SPI2 and UART3 Selection (MUX K)
      8. 4.8 DCAN2 and I2C3 Selection (MUX L)
    6. 5 USB3 Supported Configurations
      1. 5.1 Option 1
      2. 5.2 Option 2
      3. 5.3 Option 3
    7. 6 References
  2.   Revision History

3.6.24 I/O Expander List

Table 12 lists the I/O expander map.

Table 12. 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