SPDIF, Audio, and USB pin header connections
Disclaimer
The audio jack sockets, and SPDIF socket, have been tested and work!
Regardless of this, the information presented here is by no means guaranteed - modify your hardware at your own risk!
SPDIF
The SPDIF socket that we will be connecting to looks like your home aerial socket. The connections
for this socket, the board's socket, and how the two are linked is listed below:
| Name |
Board pin |
Socket pin |
| +5V |
1 |
|
| SPDIF |
2 |
Centre pin |
| Ground |
3 |
Outside pin |
If I'm not mistaken, the +5V pin from the EPIA board is only for optical connections and so isn't needed in our case.
Audio
A stereo audio jack plug has three sections and from the plug tip these connections are named: tip, ring, sleeve.
Here are the connections required to link the board with the audio sockets:
| Name |
Board pin |
Socket pin |
| Line-in Ground |
1 |
Sleeve |
| Line-in Left |
5 |
Tip |
| Line-in Right |
3 |
Ring |
| Line-out Ground |
10 |
Sleeve |
| Line-out Left |
9 |
Tip |
| Line-out Right |
8 |
Ring |
| Microphone Ground |
6 |
Sleeve |
| Microphone Input |
4 |
Tip |
| Microphone Power |
2 |
Ring |
USB
There is the potential to connect up to six USB 2.0 devices to the board, where each connector
block on the board is used to connect two USB sockets. Each connection block is wired as
follows:
| Name |
Board pin |
Socket 1 pin |
Socket 2 pin |
| +5V |
1 |
1 |
|
| +Data |
5 |
3 |
|
| -Data |
3 |
2 |
|
| Ground |
7 |
4 |
|
| +5V |
2 |
|
1 |
| +Data |
6 |
|
3 |
| -Data |
4 |
|
2 |
| Ground |
8 |
|
4 |
The pin numbers used above for the USB socket assume a numbering from left to right when looking into the socket.
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