4.9.2. 2x20 GPIO Expansion Header
The Intel® Cyclone® 10 LP FPGA evaluation board provides one 40-pin expansion GPIO header with up to 36 GPIO signals. This 2x20 GPIO Header is compatible with some Terasic 2x20 GPIO cards.
There are also +5 V (VCC_5V_GPIO) and +3.3 V (VCC_3.3V) and two GND pins on 2x20 GPIO expansion header. All GPIO signals GPIO[0:35] are 3.3 V single-ended LVCMOS/LVTTL signals who are connected to Intel® Cyclone® 10 LP FPGA directly.
Board Reference | Schematic Signal Name | FPGA Pin Number | I/O Standard | Direction @ FPGA | Description |
---|---|---|---|---|---|
J10.1 | GPIO0 | L13 | 3.3 V | IO | GPIO Signal 0 |
J10.2 | GPIO1 | L16 | 3.3 V | IO | GPIO Signal 1 |
J10.3 | GPIO2 | L15 | 3.3 V | IO | GPIO Signal 2 |
J10.4 | GPIO3 | K16 | 3.3 V | IO | GPIO Signal 3 |
J10.5 | GPIO4 | P16 | 3.3 V | IO | GPIO Signal 4 |
J10.6 | GPIO5 | R16 | 3.3 V | IO | GPIO Signal 5 |
J10.7 | GPIO6 | N16 | 3.3 V | IO | GPIO Signal 6 |
J10.8 | GPIO7 | N15 | 3.3 V | IO | GPIO Signal 7 |
J10.9 | GPIO8 | N14 | 3.3 V | IO | GPIO Signal 8 |
J10.10 | GPIO9 | P15 | 3.3 V | IO | GPIO Signal 9 |
J10.11 | VCC_5V_GPIO | --- | --- | --- | Short to VCC_5V |
J10.12 | GND | --- | --- | --- | Ground |
J10.13 | GPIO10 | N8 | 3.3 V | IO | GPIO Signal 10 |
J10.14 | GPIO11 | P8 | 3.3 V | IO | GPIO Signal 11 |
J10.15 | GPIO12 | M8 | 3.3 V | IO | GPIO Signal 12 |
J10.16 | GPIO13 | L8 | 3.3 V | IO | GPIO Signal 13 |
J10.17 | GPIO14 | R7 | 3.3 V | IO | GPIO Signal 14 |
J10.18 | GPIO15 | T7 | 3.3 V | IO | GPIO Signal 15 |
J10.19 | GPIO16 | L7 | 3.3 V | IO | GPIO Signal 16 |
J10.20 | GPIO17 | M7 | 3.3 V | IO | GPIO Signal 17 |
J10.21 | GPIO18 | R6 | 3.3 V | IO | GPIO Signal 18 |
J10.22 | GPIO19 | T6 | 3.3 V | IO | GPIO Signal 19 |
J10.23 | GPIO20 | T2 | 3.3 V | IO | GPIO Signal 20 |
J10.24 | GPIO21 | M6 | 3.3 V | IO | GPIO Signal 21 |
J10.25 | GPIO22 | R5 | 3.3 V | IO | GPIO Signal 22 |
J10.26 | GPIO23 | T5 | 3.3 V | IO | GPIO Signal 23 |
J10.27 | GPIO24 | N5 | 3.3 V | IO | GPIO Signal 24 |
J10.28 | GPIO25 | N6 | 3.3 V | IO | GPIO Signal 25 |
J10.29 | VCC_3.3V | --- | --- | --- | VCC_3.3V |
J10.30 | GND | --- | --- | --- | Ground |
J10.31 | GPIO26 | R4 | 3.3 V | IO | GPIO Signal 26 |
J10.32 | GPIO27 | T4 | 3.3 V | IO | GPIO Signal 27 |
J10.33 | GPIO28 | N3 | 3.3 V | IO | GPIO Signal 28 |
J10.34 | GPIO29 | P3 | 3.3 V | IO | GPIO Signal 29 |
J10.35 | GPIO30 | R3 | 3.3 V | IO | GPIO Signal 30 |
J10.36 | GPIO31 | T3 | 3.3 V | IO | GPIO Signal 31 |
J10.37 | GPIO32 | P6 | 3.3 V | IO | GPIO Signal 32 |
J10.38 | GPIO33 | P2 | 3.3 V | IO | GPIO Signal 33 |
J10.39 | GPIO34 | P1 | 3.3 V | IO | GPIO Signal 34 |
J10.40 | GPIO35 | R1 | 3.3 V | IO | GPIO Signal 35 |
The maximum power output capability is shown in the table below. When using 2x20 GPIO Header, USB may not provide sufficient power. Hence, use an external adapter connector (J12) to power up the board.
PowerRail | Output Pin Location | Max Current | Note |
---|---|---|---|
VCC_5V_GPIO | J10.11 | 0.5 A | VCC_5V output capability to card (depends on the power adapter capability) |
VCC_3.3V | J10.29 | 0.5 A | VCC_3.3V output capability to daughter card |