Hardware Reference Manual
SOM
Version 1.0
- 28 -
eInfochips Confidential
SOM Pin
No.
Carrier
Board Pin
Number
Signal Name
Default Pin Function
Operating
Voltage Level
J4804.26 J16.26
BLSP1_SPI_CLK
BLSP1 SPI clock
1.8
J4804.27 J16.27
SD_WRITE_PROTECT
Test point
1.8
J4804.28 J16.28
BLSP5_UART_TX
BLSP5 UART TX
1.8
J4804.29 J16.29
GND
Ground
-
J4804.30 J16.30
BLSP5_UART_RTS
BLSP5 UART RTS
1.8
J4804.31 J16.31
USB_SS_SEL
USB switch select
1.8
J4804.32 J16.32
SPKR_AMP_EN2
Speaker amplifier Enable 2
1.8
J4804.33 J16.33
GPIO_140
GPIO 140
1.8
J4804.34 J16.34
nRESET/PME_CLEAR_EXP LAN7801 reset
1.8
J4804.35 J16.35
TP_I2C_SCL
Display I2C clock
1.8
J4804.36 J16.36
SPKR_AMP_EN1
Speaker amplifier Enable 1
1.8
J4804.37 J16.37
TP_I2C_SDA
Display I2C data
1.8
J4804.38 J16.38
UART_MSM_TX
BLSP2 UART transmit/Debug
UART transmit
1.8
J4804.39 J16.39
GND
Ground
-
J4804.40 J16.40
UART_MSM_RX
BLSP2 UART receive/Debug
UART receive
1.8
J4804.41 J16.41
DMIC0_CLK
DMIC0 clock
-
J4804.42 J16.42
BLSP2_I2C_SDA
BLSP2 I2C Data
1.8
J4804.43 J16.43
DMIC0_DATA
DMIC0 Data
-
J4804.44 J16.44
BLSP2_I2C_SCL
BLSP2 I2C clock
1.8
J4804.45 J16.45
MAG_DRDY_INT
Magnetometer Interrupt
1.8
J4804.46 J16.46
LED_GPIO2
GPIO9/Blue LED control
1.8
J4804.47 J16.47
GYRO_INT
Gyro meter Interrupt
1.8
J4804.48 J16.48
HDMI_INT_GPIO
GPIO 54/HDMI Interrupt
1.8
J4804.49 J16.49
ACCL_INT1
Accelerometer Interrupt
1.8
J4804.50 J16.50
MI2S_2_D0
MI2S2 Data0
1.8
Summary of Contents for Eragon 624 SOM
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