Difference between revisions of "ORCA SOM/ORCA Evaluation Kit/Interfaces and Connectors/Audio"

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! latexfontsize="scriptsize" | Pin function
 
! latexfontsize="scriptsize" | Pin function
 
! latexfontsize="scriptsize" | Pin Notes
 
! latexfontsize="scriptsize" | Pin Notes
 +
|-
 +
|1, 17
 +
| -
 +
|3V3_CB
 +
|Power output for transceiver supply
 +
|BOARD_PGOOD driven rail
 +
|-
 +
|2, 4
 +
| -
 +
|5V_VIN
 +
|Power output for transceiver supply
 +
|Always ON rail
 +
|-
 +
|6, 9, 14, 20,
 +
25, 30, 34, 39
 +
| -
 +
|DGND
 +
|Ground
 +
|
 +
|-
 +
|7
 +
|J15.
 +
| SAI2_TXFS
 +
|Transmit Frame Sync
 +
|
 
|-
 
|-
 
|8
 
|8
 
|J15.
 
|J15.
 
|SAI2_RXFS
 
|SAI2_RXFS
−
|
+
|Receive Frame Sync
 
|
 
|
 
|-
 
|-
Line 49: Line 74:
 
|J15.
 
|J15.
 
| SAI2_RXC
 
| SAI2_RXC
−
|
+
|Receive Bit Clock
−
|
 
−
|-
 
−
|
 
−
|J15.
 
−
| SAI2_TXFS
 
−
|
 
 
|  
 
|  
 
|-
 
|-
−
|
+
|11
 
|J15.
 
|J15.
 
|SAI2_RXD0
 
|SAI2_RXD0
−
|
+
|Receive Data 0
 
|  
 
|  
 
|-
 
|-
−
|
+
|12
 
|J15.
 
|J15.
 
|SAI2_TXC
 
|SAI2_TXC
−
|
+
|Transmit Bit Clock
 
|
 
|
 
|-
 
|-
−
|
+
|16
 
|J15.
 
|J15.
 
|SAI2_TXD0
 
|SAI2_TXD0
−
|
+
|Transmit Data 0
 
|
 
|
 
|-
 
|-
−
|
+
|18
 
|J15.
 
|J15.
 
|SAI2_MCLK
 
|SAI2_MCLK
−
|
+
|Audio Master Clock
 
|
 
|
 
|-
 
|-
−
|
+
|13
 
|J15.
 
|J15.
−
|SAI5_MCLK
+
|SPDIF_RX
−
|
+
|SPDIF Receiver
 
|
 
|
 
|-
 
|-
−
|
+
|15
 
|J15.
 
|J15.
−
|SAI5_RXC
+
|SPDIF_TX
−
|
+
|SPDIF Transmitter
 
|
 
|
 
|-
 
|-
−
|
+
|22
 
|J15.
 
|J15.
−
|SAI5_RXD0
+
|SAI5_MCLK
−
|
+
|Audio Master Clock
 
|
 
|
 
|-
 
|-
−
|
+
|32
 
|J15.
 
|J15.
−
|SAI5_RXD1
+
|SAI5_RXFS
−
|
+
|Receive Frame Sync
 
|
 
|
 
|-
 
|-
−
|
+
|35
 
|J15.
 
|J15.
−
|SAI5_RXD2
+
|SAI5_RXD3
−
|
+
|Receive Data 3
 
|
 
|
 
|-
 
|-
−
|
+
|36
 
|J15.
 
|J15.
−
|SAI5_RXD3
+
|SAI5_RXD2
−
|
+
|Receive Data 2
 
|
 
|
 
|-
 
|-
−
|
+
|37
 
|J15.
 
|J15.
−
|SAI5_RXFS
+
|SAI5_RXD1
−
|
+
|Receive Data 1
 
|
 
|
 
|-
 
|-
−
|
+
|38
 
|J15.
 
|J15.
−
|SPDIF_RX
+
|SAI5_RXD0
−
|
+
|Receive Data 0
 
|
 
|
 
|-
 
|-
−
|
+
|40
 
|J15.
 
|J15.
−
|SPDIF_TX
+
|SAI5_RXC
−
|
+
|Receive Bit Clock
−
|
 
−
|-
 
−
|2, 4
 
−
| -
 
−
|5V_VIN
 
−
|Power output for transceiver supply
 
−
|Always ON rail
 
−
|-
 
−
|1, 17
 
−
| -
 
−
|3V3_CB
 
−
|Power output for transceiver supply
 
−
|BOARD_PGOOD driven rail
 
−
|-
 
−
|6, 9, 14, 20,
 
−
25, 30, 34, 39
 
−
| -
 
−
|DGND
 
−
|Ground
 
 
|
 
|
 
|}
 
|}
 +
Please note that all the signals are 0-3.3V level.
  
 
=== Device mapping ===
 
=== Device mapping ===
−
UART3 is mapped to <code>/dev/ttymxc2</code> device in Linux. The peripheral is used as the default serial console, both for the bootloader and the kernel.
+
The device mapping depends on the used device and the device tree configuration.
  
 
=== Device usage ===
 
=== Device usage ===
  
−
To connect to the debug serial port:
+
The associated device can be accessed in Linux by standard stacks, such as ''pulse audio'' or ''alsalib''.
−
 
 
−
# connect the DB9 adapter bracket to the J22 connector on the SBCX board
 
−
# connect a serial cable between DB9 connector and PC COM port through a NULL-modem cable (not provided)
 
−
# start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,1
 
  
 
----
 
----
  
 
[[Category:ORCA SOM]]
 
[[Category:ORCA SOM]]

Revision as of 06:41, 17 September 2021

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History
Version Issue Date Notes
1.0.0 Sep 2021 First release


Audio interface[edit | edit source]

There is no directly available Audio interface on the Evaluation Kit, two SAI and one SPDIF full duplex interfaces are available on the expansion connector.

Description[edit | edit source]

The SAI and SPDIF interfaces are available on the Evaluation Kit at the connector J8.

J8 is a 20x2x2.54mm pin header expansion connector that delivers many interfaces unused on board.


[[File:{Template:Nome-som-EVB-Audio-connector.png|thumb|center|500px|Audio connector]]

Signals[edit | edit source]

The following table describes the interfaces signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
1, 17 - 3V3_CB Power output for transceiver supply BOARD_PGOOD driven rail
2, 4 - 5V_VIN Power output for transceiver supply Always ON rail
6, 9, 14, 20,

25, 30, 34, 39

- DGND Ground
7 J15. SAI2_TXFS Transmit Frame Sync
8 J15. SAI2_RXFS Receive Frame Sync
10 J15. SAI2_RXC Receive Bit Clock
11 J15. SAI2_RXD0 Receive Data 0
12 J15. SAI2_TXC Transmit Bit Clock
16 J15. SAI2_TXD0 Transmit Data 0
18 J15. SAI2_MCLK Audio Master Clock
13 J15. SPDIF_RX SPDIF Receiver
15 J15. SPDIF_TX SPDIF Transmitter
22 J15. SAI5_MCLK Audio Master Clock
32 J15. SAI5_RXFS Receive Frame Sync
35 J15. SAI5_RXD3 Receive Data 3
36 J15. SAI5_RXD2 Receive Data 2
37 J15. SAI5_RXD1 Receive Data 1
38 J15. SAI5_RXD0 Receive Data 0
40 J15. SAI5_RXC Receive Bit Clock

Please note that all the signals are 0-3.3V level.

Device mapping[edit | edit source]

The device mapping depends on the used device and the device tree configuration.

Device usage[edit | edit source]

The associated device can be accessed in Linux by standard stacks, such as pulse audio or alsalib.

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