Changes

<section begin="History" />

!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History

!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"|Notes

|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"|X1.Y0.Z0|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"|Month YearSep 2021|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"|TBDFirst release

<section end="History" /><section begin="Body" />

The J8 is a 20x2x2.54mm pin header expansion connector that delivers many interfaces unused on board and can provide up to two CAN interface available on the Evaluation Kit at the connector ''TBD:Jxxx''ports.

''Jxx'' is a ''TBD:connector-type'' header connector for The CAN bus ports are compatible with the RS232 two-wires UART3 port, used for debug purposes Flexible Data rate (bootloader CAN FD) and operating system serial console)CAN 2.0B protocols specification.

 {| class="wikitable" ! latexfontsize="scriptsize"| Pin#! latexfontsize="scriptsize"| SOM Pin#! latexfontsize="scriptsize"| Pin name! latexfontsize="scriptsize"| Pin function! latexfontsize="scriptsize"| Pin Notes|-|10|J15.140|SAI2_RXC|CAN1_TX||-|12|J15.146|SAI2_TXC|CAN1_RX||-|16|J15.148|SAI2_TXD0|CAN2_TX||-|18|J15.138|SAI2_MCLK|CAN2_RX||-|22|J15.166|SAI5_MCLK|CAN2_RX||-|35|J15.176|SAI5_RXD3|CAN2_TX||-|36|J15.174|SAI5_RXD2|CAN1_RX||-|37|J15.172|SAI5_RXD1|CAN1_TX|

|1,2,4,6,,7,8,10

| N.A.5V_VIN| N.C.Power output for transceiver supply| Not connectedAlways ON rail

| 3| J1.189| RS232_RX| Receive line| 1, 17|-| 3| J1.187| RS232_TX3V3_CB| Transmit linePower output for transceiver supply| BOARD_PGOOD driven rail

| 6, 9, 14, 20, 25, 30, 34, 39

| DGND| Ground|

UART3 is CAN devices are mapped to <code>/dev/ttymxc2can<X></code> device in Linux. The peripheral is used as device mapping depends on the default serial console, both for the bootloader and the kerneldevice tree configuration.

To connect The Evaluation Kit doesn't implement any CAN transceiver, these are needed to mediate between the debug serial port:CAN bus and the CPU module.

# connect The peripheral can be configured using <code>ifconfig</code> and <code>ip link</code> utilities and can be tested with 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<code>can-modem cable (not provided)# start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,1utils</code> utilities.