Difference between revisions of "Rock3/hardware/3a"
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[[File:rock-3-a-with-label.jpg | 500px | right]] | [[File:rock-3-a-with-label.jpg | 500px | right]] | ||
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| + | === USB === | ||
| + | |||
| + | ==== One Type-A USB 3.0 port with OTG switch, the upper one on USB 3.0 port ==== | ||
| + | |||
| + | When the USB OTG Switch is switched to the '''host''' side, the Type-A USB 3.0 port also enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc. | ||
| + | |||
| + | This USB 3.0 port supports On-The-Go(OTG) when the USB OTG Switch is switched to the device side. Thus the Soc is recognized as an device. | ||
| + | |||
| + | Take adb as an example. You can use a Type-A to Type-A cable as a bridge between you PC and ROCK 3A Board. In addition to the system configuration, you can setup the adb tool on your PC to access ROCK 3A over adb. | ||
| + | |||
| + | ==== One Type-A USB 3.0 host port ==== | ||
| + | |||
| + | Tthe Type-A USB 3.0 port enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc. | ||
| + | |||
| + | ==== Two Type-A USB 2.0 host port ==== | ||
| + | |||
| + | These two ports enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc. | ||
| + | |||
| + | ==== One USB 2.0 signal on 40-pin header ==== | ||
| + | |||
| + | According to the [https://wiki.radxa.com/Rock3/hardware/models ROCK 3A SKU table], there are two USB 2.0 signal lines on 40-pin header, PIN 25&27. | ||
| + | |||
| + | When you want to select this USB function, you need to modify the hardware like this. | ||
| + | |||
| + | * Remove R90526 R90527 | ||
| + | * Add R90536 R90537 | ||
| + | |||
| + | === <span id="gpio">General purpose input-output (GPIO) connector</span> === | ||
| + | |||
| + | ROCK 3A has one 40-pin expansion header. Each pin is distinguished by color. | ||
| + | |||
| + | For more details, see the [[rock3/hardware/gpio | GPIO page]]. | ||
Revision as of 09:31, 31 August 2021
ROCK 3 > Hardware > ROCK 3 A Main Board
This hardware user manual provides information about the features and signals available on ROCK 3 board.
USB
One Type-A USB 3.0 port with OTG switch, the upper one on USB 3.0 port
When the USB OTG Switch is switched to the host side, the Type-A USB 3.0 port also enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc.
This USB 3.0 port supports On-The-Go(OTG) when the USB OTG Switch is switched to the device side. Thus the Soc is recognized as an device.
Take adb as an example. You can use a Type-A to Type-A cable as a bridge between you PC and ROCK 3A Board. In addition to the system configuration, you can setup the adb tool on your PC to access ROCK 3A over adb.
One Type-A USB 3.0 host port
Tthe Type-A USB 3.0 port enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc.
Two Type-A USB 2.0 host port
These two ports enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc.
One USB 2.0 signal on 40-pin header
According to the ROCK 3A SKU table, there are two USB 2.0 signal lines on 40-pin header, PIN 25&27.
When you want to select this USB function, you need to modify the hardware like this.
- Remove R90526 R90527
- Add R90536 R90537
General purpose input-output (GPIO) connector
ROCK 3A has one 40-pin expansion header. Each pin is distinguished by color.
For more details, see the GPIO page.