Texas Instruments DRA76xP-ACD, User Manual, Page: 20 / 38

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20 SPRUII5A – December 2017 – Revised November 2018
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DRA77xP/DRA76xP-ACD CPU EVM Board
3.23 I/O Expander List
Table 13. I/O Expander Map
Device Slave Address I2C I/F Expander IO Netname Description
EXP1 0b0010 000
(0x20) I2C1 INT# H_PCF8575_INT Interrupt output to
SoC
P0 TS_LCD_GPIO1 Press Button Switch
1
P1 TS_LCD_GPIO2 Press Button Switch
2
P2 TS_LCD_GPIO3 Press Button Switch
3
P3 TS_LCD_GPIO4 Press 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 Over Current
Indication
P13 USB2-VBUS_OCN USB2 Over Current
Indication
P14 PCI_SW_RESETn PCI Interface SW
Reset
P15 USER_SW10_4 User Switch Input
P16 USB2-VBUS_DET USB2 VBUS
Detection
P17 USB1-VBUS_DET USB1 VBUS
Detection
EXP2 0b0010 001
(0x21) I2C1 INT# PCF8575_INT Interrupt output to
SoC
P0 SEL_GPMC_AD_VID
_S0 MUX out control
signal for GPMC vs
VOUT3B
P1 USB1_ID USB1 ID PIN
P2 USER_SW10_1 User Switch Input
P3 SEL_I2C3_CAN2 MUX out control
signal for I2C3 Vs
DCAN2
P4 SEL_ENET_MUX_S0 MUX out control
signal for RGMII0 Vs
VIN
P5 SEL_EXP_I2C3_DC
AN2 Enable I2C3/DCAN2
Signals to Expansion
P6 USER_SW10_2 User Switch Input
P7 USER_SW10_3 User Switch Input
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 Vs
MMC2
P13 TMP102_ALERT Temperature sensor
alert indicator