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update pinouts

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# Pinouts
All pin definitions for LattePanda Mu
⚠️ Note:
Due to the large number of functionally multiplexing pins, you should check the [BIOS functionality documentation](../../Softwares/BIOS/README.md) before starting your design. Do not design directly from the pin definition documentation here.
![pinout](./pinout.jpg)
## eDP
I-PEX 20455-040E
| Number | Name | Type | Description |
|--------|-----------|:----:|--------------------------|
| 1 | NC | | |
| 2 | GND | | |
| 3 | DDIA_TX3- | O | Lane 3 (-) |
| 4 | DDIA_TX3+ | O | Lane 3 (+) |
| 5 | GND | | |
| 6 | DDIA_TX2- | O | Lane 2 (-) |
| 7 | DDIA_TX2+ | O | Lane 2 (+) |
| 8 | GND | | |
| 9 | DDIA_TX1- | O | Lane 1 (-) |
| 10 | DDIA_TX1+ | O | Lane 1 (+) |
| 11 | GND | | |
| 12 | DDIA_TX0- | O | Lane 0 (-) |
| 13 | DDIA_TX0+ | O | Lane 0 (+) |
| 14 | GND | | |
| 15 | DDIA_AUX+ | O | Auxiliary channel (+) |
| 16 | DDIA_AUX- | O | Auxiliary channel (-) |
| 17 | GND | | |
| 18 | LCD_VCC | | LCD Power Supplies |
| 19 | LCD_VCC | | LCD Power Supplies |
| 20 | LCD_VCC | | LCD Power Supplies |
| 21 | LCD_VCC | | LCD Power Supplies |
| 22 | Selftest | O | Default Grounding |
| 23 | GND | | |
| 24 | GND | | |
| 25 | GND | | |
| 26 | GND | | |
| 27 | HPD | I | Plug Detection |
| 28 | GND | | |
| 29 | GND | | |
| 30 | GND | | |
| 31 | GND | | |
| 32 | BL_EN | O | Backlight enable |
| 33 | BL_PWM | O | Backlight PWM dimming |
| 34 | NC | | |
| 35 | NC | | |
| 36 | BL_PWR | | Backlight Power Supplies |
| 37 | BL_PWR | | Backlight Power Supplies |
| 38 | BL_PWR | | Backlight Power Supplies |
| 39 | BL_PWR | | Backlight Power Supplies |
| 40 | NC | | |
- **LCD_VCC**: +3.3V
- **BL_PWR**: Same as LattePanda Mu input voltage
- **Selftest**: Factory test pin, ground by default
## Touch
Clamshell 6P 0.5mm FFC/FPC Connector
| Number | Name | Type | Description |
|--------|------------|:----:|-----------------------|
| 1 | I2C0_SCL | O | I2C Bus |
| 2 | I2C0_SDA | I/O | I2C Bus |
| 3 | GND | | |
| 4 | TOUCH_RST# | O | Touch panel reset |
| 5 | TOUCH_INT | I | Touch event interrupt |
| 6 | +3.3V | | Touch panel power |
## MIPI CSI-2
Clamshell 22P 0.5mm FFC/FPC Connector
| Number | Name | Type | Description |
|--------|-----------|:----:|-------------------|
| 1 | GND | | |
| 2 | CSI_B_D0- | I | MIPI Data Lane 0 |
| 3 | CSI_B_D0+ | I | MIPI Data Lane 0 |
| 4 | GND | | |
| 5 | CSI_B_D1- | I | MIPI Data Lane 1 |
| 6 | CSI_B_D1+ | I | MIPI Data Lane 1 |
| 7 | GND | | |
| 8 | CSI_B_CK- | I | MIPI Clock |
| 9 | CSI_B_CK+ | I | MIPI Clock |
| 10 | GND | | |
| 11 | CSI_B_D2- | I | MIPI Data Lane 2 |
| 12 | CSI_B_D2+ | I | MIPI Data Lane 2 |
| 13 | GND | | |
| 14 | CSI_B_D3- | I | MIPI Data Lane 3 |
| 15 | CSI_B_D3+ | I | MIPI Data Lane 3 |
| 16 | GND | | |
| 17 | CAM_RST | O | Camera reset |
| 18 | CAM_MCLK | O | Camera main clock |
| 19 | GND | | |
| 20 | I2C1_SCL | O | I2C bus |
| 21 | I2C1_SDA | I/O | I2C bus |
| 22 | +3.3V | | Camera power |
- **CAM_RST**: SoC GPP_A21
- **CAM_MCLK**: SoC GPP_D4
## SODIMM
DDR4 SODIMM pin table is too long, so I put it in a separate csv file.
- [Front Side](./front.csv)
- [Back Side](./back.csv)
⚠️ Note:
Due to the large number of functionally multiplexing pins, you should check the [BIOS functionality documentation](../../Softwares/BIOS/README.md) before starting your design. Do not design directly from the pin definition documentation here.