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=== Description ===
The UARTs interfaces are available on the Evaluation Kit at are mapped to the connector J8 following connectors:
* J8 is a 20x2x2.54mm pin header expansion connector that delivers many interfaces unused on board. On this connector are mapped these instances: UART1; UART2 (default debug console); UART4.
* J9 is a 8x1x1.25mm 53398-0871 Molex connector that delivers one RS232 4 wires (mapped to UART1) and one RS485 2 wires (mapped to UART3)
[[File:{{{nomeORCA-som}}EVK-EVB-UARTsJ9-connector.png|thumb|center|500px|UARTs J9 connector]]
===Signals ===
The following table describes tables describe the interface interfaces signals:
==== J8 ====
{| class="wikitable"
! latexfontsize="scriptsize" | Pin#
| SAI2_TXFS
| UART1_CTS
|shared with RS232
|-
| 8
| SAI2_RXFS
| UART1_TXD
| shared with RS232
|-
|10
| SAI2_RXC
| UART1_RXD
| shared with RS232
|-
|11
| SAI2_RXD0
| UART1_RTS
| shared with RS232|-|19|J15.122|ECSPI2_MOSI|UART4_TXD|Transmit signal (OUT)|-|21|J15.120|ECSPI2_MISO|UART4_CTS|Clear to send (OUT)|-|23|J15.124|ECSPI2_SCLK|UART4_RXD|Receive signal (IN)|-|24|J15.126|ECSPI2_SS0|UART4_RTS|Request to send (IN)|-|27|J15.248|UART2_RXD|UART2_RXD|default debug console|-|29|J15.250|UART2_TXD|UART2_TXD|default debug console|-|31|J15.256|UART4_RXD|UART4_RXD|alternative to ECSPI2_SCLK|-|33|J15.258|UART4_TXD|UART4_TXD|alternative to ECSPI2_MOSI|-|1, 17| -|3V3_CB|Power output for transceiver supply|BOARD_PGOOD driven rail
|-
|6, 9, 14, 20, 25, 30, 34, 39
| -
|DGND
|Ground
|
|}
==== J9 ====
{| class="wikitable"
! latexfontsize="scriptsize" | Pin#
! latexfontsize="scriptsize" | SOM Pin#
! latexfontsize="scriptsize" | Pin name
! latexfontsize="scriptsize" | Pin function
! latexfontsize="scriptsize" | Pin Notes
|-
|1
| -
| RS485_A
|Non inverting BUS signal
|UART3
|-
|2
| -
| RS485_B
|Inverting BUS signal
|UART3
|-
|3
| -
| RS485_B_120R
|Termination resistor
|connect this signal to RS485_B
to enable the 120R termination
|-
|4
| -
| DGND
|Ground
|
|-
|5|J15.144|RS232_TX|Transmit line|UART1_TXD (shared with J8.8)|-|6|J15.140|RS232_RX|Receive line|UART1_RXD (shared with J8.10)
|-
|7|J15.150|RS232_CTS|Clear to send line|UART1_CTS (shared with J8.7)
|-
|8|J15.142|RS232_RTS|Request to send line|UART1_RTS (shared with J8.11)
|}
=== Device mapping ===
=== Device usage ===
----
[[Category:ORCA SOM]]