ZERO SOM/ZERO Evaluation Kit/Interfaces and Connectors/GPIOs
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Contents
GPIOs interface[edit | edit source]
Description[edit | edit source]
The GPIOs interface is available on the Evaluation Kit at the connectors CN1 and J54.
- CN1 is a 15x2x2.54mm pinstrip header connector and it mades availability OF GPIO_A to GPIO_E OSM contacts. GPIOs are at 1V8 voltage level
- J54 is a 6x2x2.54mm pinstrip header connector and it mades available a set of GPIOs through and I2C expander and they are at 3V3 voltage level
Signals[edit | edit source]
The following table describes the interface signals:
CN1[edit | edit source]
| Pin# | OSM name | OSM contact | Pin name | Notes |
|---|---|---|---|---|
| 1 | - | - | +1V8 | |
| 2 | - | - | +1V8 | |
| 3 | E17 | GPIO_A_1 | OPT_GPIO_A_1 | optionally available |
| 4 | V32 | GPIO_D_2 | OPT_GPIO_D_2 | optionally available |
| 5 | G17 | GPIO_A_3 | GPIO_A_3 | |
| 6 | V33 | GPIO_D_3 | OPT_GPIO_D_3 | optionally available |
| 7 | H17 | GPIO_A_4 | OPT_GPIO_A_4 | optionally available |
| 8 | W32 | GPIO_D_4 | OPT_GPIO_D_4 | optionally available |
| 9 | J17 | GPIO_A_5 | GPIO_A_5 | |
| 10 | W33 | GPIO_D_5 | OPT_GPIO_D_5 | optionally available |
| 11 | E19 | GPIO_B_1 | OPT_GPIO_B_1 | optionally available |
| 12 | Y32 | GPIO_D_6 | OPT_GPIO_D_6 | optionally available |
| 13 | G19 | GPIO_B_3 | GPIO_B_3 | |
| 14 | AF32 | GPIO_E_0 | GPIO_E_0 | |
| 15 | J19 | GPIO_B_5 | GPIO_B_5 | |
| 16 | AF33 | GPIO_E_1 | OPT_GPIO_E_1 | optionally available |
| 17 | K19 | GPIO_B_6 | OPT_GPIO_B_6 | optionally available |
| 18 | AG32 | GPIO_E_2 | GPIO_E_2 | |
| 19 | L19 | GPIO_B_7 | OPT_GPIO_B_7 | optionally available |
| 20 | AG33 | GPIO_E_3 | GPIO_E_3 | |
| 21 | D3 | GPIO_C_0 | OPT_GPIO_C_0 | optionally available |
| 22 | AH32 | GPIO_E_4 | GPIO_E_4 | |
| 23 | D4 | GPIO_C_1 | OPT_GPIO_C_1 | |
| 24 | AH33 | GPIO_E_5 | OPT_GPIO_E_5 | optionally available |
| 25 | U32 | GPIO_D_0 | OPT_GPIO_D_0 | optionally available |
| 26 | AJ32 | GPIO_E_6 | OPT_GPIO_E_6 | optionally available |
| 27 | U33 | GPIO_D_1 | OPT_GPIO_D_1 | optionally available |
| 28 | AJ33 | GPIO_E_7 | OPT_GPIO_E_7 | optionally available |
| 29 | - | - | DGND | |
| 30 | - | - | DGND |
J54[edit | edit source]
| Pin# | Pin name | Notes |
|---|---|---|
| 1 | GPIO_3V3_01 | |
| 2 | +3V3 | |
| 3 | GPIO_3V3_02 | |
| 4 | GPIO_3V3_06 | |
| 5 | GPIO_3V3_03 | |
| 6 | ETH_A_RST | ETH_A phy reset signal |
| 7 | GPIO_3V3_04 | |
| 8 | ETH_B_RST | ETH_B phy reset signal |
| 9 | GPIO_3V3_05 | |
| 10 | ETH_C_RST | ETH_C phy reset signal |
| 11 | DGND | Ground |
| 12 | ETH_D_RST | ETH_D phy reset signal |
Device mapping[edit | edit source]
GPIOs can be used directly on Linux kernel device driver or can be configured on the device tree.
