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J721E EVM Hardware Architecture
31
SPRUIS4A–December 2019–Revised May 2020
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Jacinto7 J721E/DRA829/TDA4VM Evaluation Module (EVM)
4.4 GPIO Mapping
The general purpose I/Os (GPIOs) of the SoC have two major groups: WKUP/MCU and MAIN. Table 18
describes the detailed GPIO mapping of SoC with EVM peripherals.
Table 18. J721E SoC - GPIO Mapping Table
J721E SoC - GPIO Mapping Table
Package Signal
Name GPIO Net name In/Out Default State Remarks
WKUP/MCU Domain
WKUP_
GPIO0_0
WKUP_
GPIO0_0
MCU_MCAN0_EN Output BOOTMODE Active High MCU CAN0 Enable
WKUP_
GPIO0_1
WKUP_
GPIO0_1
BOOT_EEPROM_
WP
Output BOOTMODE Active High Boot EEPROM Write protect
WKUP_
GPIO0_2
WKUP_
GPIO0_2
MCU_CAN1_STB Output BOOTMODE Active High MCU CAN1 Standby
WKUP_
GPIO0_3
WKUP_
GPIO0_3
GPIO_MCU_
RGMII1_RST#
Output PU Active low MCU_RGMII1_Reset
WKUP_
GPIO0_6
WKUP_
GPIO0_6
WKUP_GPIO0_6 I/O Test Point NA Terminated with Test point
WKUP_
GPIO0_7
WKUP_
GPIO0_7
SYS_IRQz Input PU Active low Push-button Interrupt, User Defined/Wake S2R ('0>1'
- interrupt pending, '1' - normal operation)
WKUP_
GPIO0_8
WKUP_
GPIO0_8
OSPI/HYPER_
MUX_SEL
Output DIP_SEL NA Flash Memory Selection ('0' - OSPI0, '1' - Hyperflash
+ HyperRam)
WKUP_
GPIO0_9
WKUP_
GPIO0_9
PMIC_MCU_INT# Input PU Active low Interrupt from PMIC
WKUP_
GPIO0_17
WKUP_
GPIO0_17
MCU_OSPI0_
ECC_FAIL
Output NA Active High OSPI_ECC_FAIL (Mux option w/ HYPERBUS_CKn),
MCU_OSPI0_ECC_FAIL is DNI resistor option.
MCU_SPI0_
CLK
WKUP_
GPIO0_52
WKUP_GPIO0_52 I/O BOOTMODE NA Terminated with Test point
MCU_SPI0_
CS0
WKUP_
GPIO0_55
MCU_RGMII1_
INT#
Input PU Active Low MCU Ethernet Interrupt ('0' - interrupt pending, '1' - no
interrupt)
MCU_SPI0_
D0
WKUP_
GPIO0_53
SYS_MCU_
PWRDN
Output PD Active low System Power Down ('0' - normal operation, '1' -
system power down)
MCU_SPI0_
D1
WKUP_
GPIO0_54
MCU_CAN0_STBz Output PD Active low MCU CAN0 Standby
Main Domain
EXTINTN GPIO0_0 SOC_EXTINTN Input PU Active low Push-button Interrupt, User Defined
RGMII6_RX_
CTL
GPIO0_98 C_MCASP10_
AFSR
NA PU Active low I2C0 I/O expander interrupt. ('0' - interrupt pending, '1'
- no interrupt)(I2C0_IOEXP_INT#)
Note: GPIO only available from Trace/GPMC Mux
RGMII6_
RD3
GPIO0_105 IMU_GPIO0 I/O NA NA Used as GPIO0 for IMU Sensor
SPI1_CS1 GPIO0_117 DSI_UB981_INTB Input PU Active low DSI FPD Link Serializer/Panel Interrupt.
Note: resistor option with CON_DSI0_INT#
UART1_
CTSN
GPIO0_127 GPIO0_127/
EQEP0_S/MLB0_
MLBCLK
Output PU Active High CP Board - MCAN2_STB; GESI -
Boosterpack_GPIO2
UART1_
RTSN
GPIO1_0 GPIO1_0/EQEP0_I
/MLB0_MLBDAT
Output PD NA CP Board - PM I2C Mux seletion. ('0' -
SOC_I2C2_SCL/SDA → PM1_SCL/SDA, '1' -
SOC_I2C2_SCL/SDA → PM2_SCL/SDA)
GESI - Boosterpack_GPIO1
MCAN1_RX GPIO1_3 USBC_DIR Input PU NA USB Type C Cable Orientation. Type-C plug position
2 (H); Type-C plug position 1 (L)
ECAP0_IN_
APWM_
OUT
GPIO1_11 GPIO1_11/MAIN_
I3C0_
SDAPULLEN
Input PU Active High Display I/O expander Interrupt. ('0' - interrupt pending,
'1' - no interrupt) (IOEXP4_INT#)
EXT_
REFCLK1
GPIO1_12 GPIO1_12/MLB0_REFCL
K
Input PD NA CP Board Audio De-serializer UB926_GPIO1 (Tuner
Unused GPIO)
MMC1_
SDWP
GPIO1_22 ENET_EXP_INTB Input PU Active low Ethernet Expansion Interrupt. ('0' - interrupt pending,
'1' - no interrupt)
I3C0_SCL GPIO1_5 H_I3C0_SCL I/O NA NA CP Board Audio De-serializer UB926_GPIO2
I3C0_SDA GPIO1_6 H_I3C0_SDA I/O NA NA CP Board Audio De-serializer UB926_GPIO3
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