Difference between revisions of "RIALTO SBC/Interfaces and Connectors/Mezzanine"
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| Line 36: | Line 36: | ||
! latexfontsize="scriptsize" |Pin# | ! latexfontsize="scriptsize" |Pin# | ||
! latexfontsize="scriptsize" |Pin name | ! latexfontsize="scriptsize" |Pin name | ||
| − | ! latexfontsize="scriptsize" | | + | ! latexfontsize="scriptsize" |Alternate function |
! latexfontsize="scriptsize" |GPIO | ! latexfontsize="scriptsize" |GPIO | ||
| + | !Pin notes | ||
|- | |- | ||
|1 | |1 | ||
| Line 43: | Line 44: | ||
|I2C4_SDA, ECSPI3_SCLK | |I2C4_SDA, ECSPI3_SCLK | ||
|GPIO1_IO21 | |GPIO1_IO21 | ||
| + | | | ||
| + | |- | ||
| + | |2 | ||
| + | |UART2_RTS | ||
| + | |FLEXCAN2_RX, ECSPI3_MISO | ||
| + | |GPIO1_IO23 | ||
| + | | | ||
| + | |- | ||
| + | |3 | ||
| + | |UART2_TX_DATA | ||
| + | |I2C4_SCL, ECSPI3_SS0 | ||
| + | |GPIO1_IO20 | ||
| + | | | ||
| + | |- | ||
| + | |4 | ||
| + | |UART2_CTS | ||
| + | |FLEXCAN2_TX, ECSPI3_MOSI | ||
| + | |GPIO1_IO22 | ||
| + | | | ||
| + | |- | ||
| + | |5 | ||
| + | |UART5_TX_DATA | ||
| + | |I2C2_SCL | ||
| + | |GPIO1_IO3 | ||
| + | | | ||
| + | |- | ||
| + | |6 | ||
| + | |UART5_RX_DATA | ||
| + | |I2C2_SDA | ||
| + | |GPIO1_IO31 | ||
| + | | | ||
| + | |- | ||
| + | |7 | ||
| + | |MEZZANINE_GP0 | ||
| + | | | ||
| + | |GPIO3_IO24 or GPIO4_IO25 | ||
| + | |LCD_DATA19 or CSI_DATA04 mounting options | ||
| + | |- | ||
| + | |8 | ||
| + | |MEZZANINE_GP1 | ||
| + | | | ||
| + | |GPIO3_IO27 or GPIO4_IO26 | ||
| + | |LCD_DATA22 or CSI_DATA05 mounting options | ||
| + | |- | ||
| + | |9 | ||
| + | |MEZZANINE_GP2 | ||
| + | | | ||
| + | |GPIO3_IO28 or GPIO4_IO27 | ||
| + | |LCD_DATA23 or CSI_DATA06 mounting options | ||
|- | |- | ||
|10 | |10 | ||
|DGND | |DGND | ||
|Ground | |Ground | ||
| + | | | ||
| | | | ||
|} | |} | ||
| Line 53: | Line 104: | ||
=== Device mapping === | === Device mapping === | ||
| + | |||
| + | ==== UART ==== | ||
| + | * UART2 and it is mapped to <code>/dev/ttymxc1</code> device in Linux | ||
| + | * UART5 and it is mapped to <code>/dev/ttymxc4</code> device in Linux | ||
| + | |||
==== GPIO ==== | ==== GPIO ==== | ||
GPIOs are mapped into banks each of which contains 32 pins. They are named as GPIO<bank>_IO<pin> | GPIOs are mapped into banks each of which contains 32 pins. They are named as GPIO<bank>_IO<pin> | ||
| Line 59: | Line 115: | ||
=== Device usage === | === Device usage === | ||
| + | |||
| + | ==== UART ==== | ||
| + | UART peripherals use standard Linux protocols. | ||
| + | |||
==== GPIO ==== | ==== GPIO ==== | ||
| − | Under Linux the GPIOs can be manipulated su sysfs export or with the gpio tools. | + | Under Linux the GPIOs can be manipulated su <code>sysfs</code> export or with the gpio tools. |
<section end="Body" /> | <section end="Body" /> | ||
[[Category:RIALTO SBC]] | [[Category:RIALTO SBC]] | ||
Revision as of 14:12, 13 January 2024
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| History | |||
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| 2024/01/13 | First documentationrelease | ||
Contents
Mezzanine Connectors[edit | edit source]
Description[edit | edit source]
RIALTO SBC has two mezzanine expansion connectors: J60 and J61.
J60 is a 10x1x2.54mm pin strip header connector.
J61 is a 10x1x2.54mm pin strip header connector.
Signals[edit | edit source]
The following table describes the interface signals:
| Pin# | Pin name | Alternate function | GPIO | Pin notes |
|---|---|---|---|---|
| 1 | UART2_RX_DATA | I2C4_SDA, ECSPI3_SCLK | GPIO1_IO21 | |
| 2 | UART2_RTS | FLEXCAN2_RX, ECSPI3_MISO | GPIO1_IO23 | |
| 3 | UART2_TX_DATA | I2C4_SCL, ECSPI3_SS0 | GPIO1_IO20 | |
| 4 | UART2_CTS | FLEXCAN2_TX, ECSPI3_MOSI | GPIO1_IO22 | |
| 5 | UART5_TX_DATA | I2C2_SCL | GPIO1_IO3 | |
| 6 | UART5_RX_DATA | I2C2_SDA | GPIO1_IO31 | |
| 7 | MEZZANINE_GP0 | GPIO3_IO24 or GPIO4_IO25 | LCD_DATA19 or CSI_DATA04 mounting options | |
| 8 | MEZZANINE_GP1 | GPIO3_IO27 or GPIO4_IO26 | LCD_DATA22 or CSI_DATA05 mounting options | |
| 9 | MEZZANINE_GP2 | GPIO3_IO28 or GPIO4_IO27 | LCD_DATA23 or CSI_DATA06 mounting options | |
| 10 | DGND | Ground |
All the GPIO signals are 0-3.3V level.
Device mapping[edit | edit source]
UART[edit | edit source]
- UART2 and it is mapped to
/dev/ttymxc1device in Linux - UART5 and it is mapped to
/dev/ttymxc4device in Linux
GPIO[edit | edit source]
GPIOs are mapped into banks each of which contains 32 pins. They are named as GPIO<bank>_IO<pin>
Each pin can be addressed with an incremental number, calculated as follows: GPIO = 32 x (<bank> - 1) + <pin>
Device usage[edit | edit source]
UART[edit | edit source]
UART peripherals use standard Linux protocols.
GPIO[edit | edit source]
Under Linux the GPIOs can be manipulated su sysfs export or with the gpio tools.
