Difference between revisions of "AXEL Lite SOM/AXEL Lite Evaluation Kit/Interfaces and Connectors/HDMI"
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{| style="border-collapse:collapse; " | {| style="border-collapse:collapse; " | ||
| − | !colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History | + | ! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History |
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| − | !style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Version | + | ! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Version |
| − | !style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Issue Date | + | ! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Issue Date |
| − | !style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Notes | + | ! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Notes |
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| − | |style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|1.0.0 | + | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |1.0.0 |
| − | |style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Oct 2020 | + | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |Oct 2020 |
| − | |style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|First DESK release | + | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |First DESK release |
|} | |} | ||
| − | <section end=History/> | + | <section end="History" /> |
| − | <section begin=Body/> | + | <section begin="Body" /> |
==HDMI== | ==HDMI== | ||
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{| class="wikitable" | {| class="wikitable" | ||
| − | ! latexfontsize="scriptsize"| Pin# | + | ! latexfontsize="scriptsize" | Pin# |
| − | ! latexfontsize="scriptsize"| SOM Pin# | + | ! latexfontsize="scriptsize" | SOM Pin# |
| − | ! latexfontsize="scriptsize"| Pin name | + | ! latexfontsize="scriptsize" | Pin name |
| − | ! latexfontsize="scriptsize"| Pin function | + | ! latexfontsize="scriptsize" | Pin function |
| − | ! latexfontsize="scriptsize"| Pin Notes | + | ! latexfontsize="scriptsize" | Pin Notes |
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| 16 || J10.103 || DDC_DAT_OUT || I2C data|| | | 16 || J10.103 || DDC_DAT_OUT || I2C data|| | ||
| + | |- | ||
| + | |18 | ||
| + | | - | ||
| + | |5V | ||
| + | | +5V output | ||
| + | |Internally limited to 135mA | ||
|- | |- | ||
| 19 || J10.129 || HDMI_HP_OUT || Hotplug detection|| | | 19 || J10.129 || HDMI_HP_OUT || Hotplug detection|| | ||
Revision as of 11:22, 9 September 2021
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| History | |||
|---|---|---|---|
| Version | Issue Date | Notes | |
| 1.0.0 | Oct 2020 | First DESK release | |
HDMI[edit | edit source]
Description[edit | edit source]
SBCX provides an HDMI 1.4a compatible interface, including the HDMI controller and PHY, routed to a standard HDMI Type A receptacle.
Signals[edit | edit source]
The following table describes the interface signals:
| Pin# | SOM Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|---|
| 1 | J10.125 | HDMI_D2P | TX pair 2 data + | |
| 3 | J10.123 | HDMI_D2N | TX pair 2 data - | |
| 4 | J10.121 | HDMI_D1P | TX pair 1 data + | |
| 6 | J10.119 | HDMI_D1N | TX pair 1 data - | |
| 7 | J10.117 | HDMI_D0P | TX pair 0 data + | |
| 9 | J10.115 | HDMI_D0N | TX pair 0 data - | |
| 10 | J10.113 | HDMI_CLKP | Tx pair clock + | |
| 12 | J10.111 | HDMI_CLKN | Tx pair clock - | |
| 13 | J10.127 | CE_REMOTE_OUT | Consumer Electric Control | |
| 15 | J10.101 | DDC_CLK_OUT | I2C clock | |
| 16 | J10.103 | DDC_DAT_OUT | I2C data | |
| 18 | - | 5V | +5V output | Internally limited to 135mA |
| 19 | J10.129 | HDMI_HP_OUT | Hotplug detection | |
| 2, 5, 8, 11, 17 |
- | DGND | Ground | |
| 14 | - | NC | Not connected | |
| 20, 21, 22, 23 |
- | SH_HDMI | Shield |
Device mapping[edit | edit source]
HDMI video is mapped to the corresponding device driver in Linux, depending on the device tree configuration. If this is the only video output, then the default value is mapped to /dev/fb0.
Device usage[edit | edit source]
The associated framebuffer device is accessed in Linux through the standard graphic access.
