GPIO Register Map
- Please see Expansion Connectors document to check each GPIO pin locations.
| GPIO Base Register | Calculated Address | GPIO Bank/Name | Register | Offset | Control Bit | Purpose | Default | Description | |
|---|---|---|---|---|---|---|---|---|---|
| 0xFF634400 | Base Address + Offset * 4 | GPIOX.[n] n = 0 to 19 | PREG_PAD_GPIO2_EN_N | 0x16 | [19:0] | Set direction mode | 1 | 0 to OUTPUT 1 to INPUT |
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| PREG_PAD_GPIO2_O | 0x17 | Write a value | 1 | 0 to LOW 1 to HIGH |
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| PREG_PAD_GPIO2_I | 0x18 | Read a value | 0 | ||||||
| PAD_PULL_UP_EN_REG2 | 0x4A | Enable pull mode | 0x7FFFF | 0 to Disable 1 to Enable |
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| PAD_PULL_UP_REG2 | 0x3C | Set pull mode | 0x5FFBF | 0 to Down 1 to Up |
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| GPIOA.[n] n = 0 to 4, 11 to 15 | PREG_PAD_GPIO5_EN_N | 0x20 | [15:0] | Set direction mode | 1 | 0 to OUTPUT 1 to INPUT |
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| PREG_PAD_GPIO5_O | 0x21 | Write a value | 1 | 0 to LOW 1 to HIGH |
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| PREG_PAD_GPIO5_I | 0x22 | Read a value | 0 | ||||||
| PAD_PULL_UP_EN_REG5 | 0x4D | Enable pull mode | 0xFFFFF | 0 to Disable 1 to Enable |
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| PAD_PULL_UP_REG5 | 0x3F | Set pull mode | 0xC000 | 0 to Down 1 to Up |
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