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fixed #636: jumpers explanation

This commit is contained in:
Maxim Devaev 2022-04-16 00:02:22 +03:00
parent 61d89a908c
commit 136c76a387
1 changed files with 4 additions and 4 deletions
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docs/v3.md
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@ -144,19 +144,19 @@ To manage the power of your computer, you will need to install an ATX adapter bo
<img src="v3_features.jpg" />
1. **ATX controller** interface (power on/off, reboot control, PWR and HDD ACT LEDs).
2. **HDMI reset** jumper.
2. **HDMI reset** jumper. Connects GPIO 17 and RESET pin to HDMI capture chip. Currently not used, don't touch it.
3. **SPI and GPIO** for the custom extension boards.
4. **Audio capture** jumpers.
4. **Audio capture** jumpers. Connects I2S pins 18, 19, 20 to HDMI capture chip.
5. **UART access** pins.
6. **Serial console port** (default: /dev/ttyAMA0, RS232 input, outputs +6V/-6V, for the Raspberry Pi or server console access).
7. **USB-C console port** (shared with #6 above, takes priority over RJ45).
8. **Power** and **activity LEDs**.
8. **Power** and **activity LEDs**. On the left of the LEDs the watchdog jumper is located. Don't touch it.
9. **USB-C power input**.
10. **I2C display connector**.
11. **Alternate +5V power input/output** header pins.
12. **RTC clock** supercapacitor (rechargeable).
13. **FAN connector** - PWM controlled.
14. **CSI-2 interface** and **HDMI backpowering** jumper.
14. **CSI-2 interface** and **HDMI backpowering** jumper, see [Step 8 of the Basic Setup](#basic-setup). Open: diode will stop current from HDMI input (backpower will be fixed), closed: will allow current from HDMI device.
15. Built-in **power splitter** port.
16. **HDMI capture port** (max 1080p @ 50Hz) with **sound capture** support.
17. **USB emulation pins** for alternative access.