Expansion Connector; Figure 32 - Io Card Expansion Header (J4) - Arrow einfochips eragon 660 Hardware Referance Manual

Hardware Reference Manual

6.3.20 Expansion Connector

Different signals from SBC module are brought to IO card on 20 pin Female Headers (J4, J8).
IO Card has I2C base GPIO expander chip and its signal came on connector J4.
User can interface other I2S based peripherals to SBC module through connector J8.
Pinout specification of J4 is given below,
Pin Number
J4.1 VCC_1V8
J4.2 VCC_3V3
J4.3 GND
J4.4 GND
J4.5 GND
J4.6 GND
J4.7 IOE_GPIO_1
J4.8 IOE_GPIO_2
J4.9 IOE_GPIO_3
J4.10 IOE_GPIO_4
J4.11 IOE_GPIO_5
J4.12 IOE_GPIO_6
J4.13 IOE_GPIO_7
J4.14 IOE_GPIO_9
J4.15 IOE_GPIO_11
J4.16 IOE_GPIO_10
J4.17 GPIO_28_1
J4.18 IOE_GPIO_12
J4.19 LPI_GPIO_16
J4.20 LPI_GPIO_17
Version 1.0
Figure 32 – IO Card Expansion Header (J4)
Net Name
Table 30: IO Card Expansion Header (20) Pinout
Pin Function
1.8V Supply
3.3V Supply
Ground
Ground
Ground
Ground
GPIO -1 Pin
GPIO -2 Pin
GPIO -3 Pin
GPIO -4 Pin
GPIO -5 Pin
GPIO -6 Pin
GPIO -7 Pin
GPIO -9 Pin
GPIO -11 Pin
GPIO -10 Pin
GPIO -28 Pin
GPIO -12 Pin
GPIO -16 Pin
GPIO -17 Pin
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