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Framework Laptop 16 Keyboard
We are shipping 4 different keyboard types:
- RGB ANSI Keyboard
- White backlight ANSI/ISO Keyboard
- White backlight Numpad
- RGB Macropad
All of them are powered by a Raspberry Pi RP2040 microcontroller.
Pinouts
Below are the pinouts of the mass production units.
RP2040 MCU
| Pin | Name | To | Direction | Config | Modules |
|---|---|---|---|---|---|
| GPIO0 | Sleep | EC | IN | Pullup, low active | All |
| GPIO1 | MUX_A | SGM48751 Mux | OUT | All | |
| GPIO2 | MUX_B | SGM48751 Mux | OUT | All | |
| GPIO3 | MUX_C | SGM48751 Mux | OUT | All | |
| GPIO4 | MUX_ENABLE | SGM48751 Mux | OUT | All | |
| GPIO5 | BOOT_DONE | All | |||
| GPIO6 | Reserved | KSI5 | High-Z | Unused | All |
| GPIO7 | Reserved | KSI5 | High-Z | Unused | All |
| GPIO8-23 | KSO1-15 | All | |||
| GPIO24 | CAPS_LED | Capslock LED | OUT | High Active | RGB & White Keyboard |
| GPIO25 | BACKLIGHT | Backlight LED | OUT | High Active | White Keyboard, Numpad |
| GPIO26 | I2C1_SDA | IS31FL3743A | IN/OUT | RGB Keyboard, Macropad | |
| GPIO27 | I2C1_SCL | IS31FL3743A | OUT | RGB Keyboard, Macropad | |
| GPIO28 | ANALOG_IN | ISGM48751 Mux | IN | KSI scan ADC Input | All |
| GPIO29 | SDB | IS31FL3743A | OUT | High active | RGB Keyboard, Macropad |
IS31FL3743A LED Controller
Documentation and Datasheet of this controller are publicly available.
On the RGB keyboard two controllers are needed to drive all LEDs. The Macropad only has a single one.
| Pin | To | Direction | Config |
|---|---|---|---|
| SDA | RP2040 | IN/OUT | |
| SCL | RP2040 | IN | |
| SDB | RP2040 | IN | High active |
| ISET | |||
| ADDR | |||
| SW1-SW9 | LED | OUT | See table below |
| SW10-SW11 | NC | Unused | |
| CS1-CS18 | LED | OUT | See table below |
| SYNC | IS31FL3743A | IN/OUT |
I2C Addresses:
- RGB Keyboard: 0x20 and 0x23
- Macropad: 0x20
Below is the table describing how the LEDs are placed on the matrix and how they are wired up to the LED controller.
- X is the X location in the matrix (from left to right)
- Y is the Y location in the matrix (from bottom to top)
- ID is the numerical identifier of the LED
- I2C is the address of the controller, either 0x20 or 0x23
- Address and Page describe the memory location in the IS31FL3743A's registers
- SW and CS are the pins
Please refer to the controller's datasheet for additional information about how to program it.
RGB Keyboard
Please refer to the reference code:
Macropad Keyboard
Keyboard Matrix
Please refer to the reference code:
License
Input Modules © 2023 by Framework Computer Inc is licensed under CC BY 4.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/