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ORCA SOM/ORCA Evaluation Kit/Interfaces and Connectors/Audio

1,114 bytes removed, 18:54, 29 December 2023
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<section begin="History" />
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!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History
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<section end="History" /><section begin="Body" />
==Audio interface ==
''TBD: sostituire le sezioni con le informazioni sull'uso della periferica e del suo connettore''''Nell'esempio di seguito c'è la descrizione dell'interfaccia UART/console''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 ===
The Audio interface SAI and SPDIF interfaces are available on the Evaluation Kit at the connector ''TBD:Jxxx''J8.
''Jxx'' J8 is a ''TBD:connector-type'' 20x2x2.54mm pin header expansion connector for the RS232 two-wires UART3 port, used for debug purposes (bootloader and operating system serial console)that delivers many interfaces unused on board.
[[File:{{{nomeORCA-som}}EVK-EVB-AudioJ8-connector.png|thumb|center|500px|Audio connector(on J8)]]
===Signals ===
The following table describes the interface interfaces signals:
{| class="wikitable"
! latexfontsize="scriptsize"| Pin#! latexfontsize="scriptsize"| SOM Pin#! latexfontsize="scriptsize"| Pin name! latexfontsize="scriptsize"| Pin function! latexfontsize="scriptsize"| Pin Notes|-|1, 17| -|3V3_CB|Power output for transceiver supply|BOARD_PGOOD driven rail
|-
|1,2,4,6,,7,8,10
| -
| N.A.5V_VIN| N.C.Power output for transceiver supply| Not connectedAlways ON rail
|-
| 36, 9, 14, 20,25, 30, 34, 39| -|DGND|Ground||-|7| J1J15.189| RS232_RXSAI2_TXFS| Receive lineTransmit Frame Sync
|
|-
| 38| J1J15.187| RS232_TXSAI2_RXFS| Transmit lineReceive Frame Sync||-|10|J15.| SAI2_RXC|Receive Bit Clock
|
|-
| 911| -J15.| DGNDSAI2_RXD0| GroundReceive 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 ===
UART3 is mapped to <code>/dev/ttymxc2</code> The device in Linux. The peripheral is mapping depends on the used as the default serial console, both for the bootloader device and the kerneldevice tree configuration.
=== Device usage ===
To connect to the debug serial port: # 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: 115200The associated device can be accessed in Linux by standard stacks,N,8,1such as ''pulse audio'' or ''alsalib''.
----
[[Category:ORCA SOM]]
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