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=Introduction=
This document details connectors, buttons and switches that equip SBC Lynx board. '''Please note that not all of them are available on all models'''.
For some connectors, information related to the internal connections to the processor are provided. In these cases, 14x14mm-package processor's balls references are indicated.
The following table lists connectors, buttons and switches available on SBC Lynx.
==Serial console (J42)==
[[File:SBC Lynx-J42.png|thumb|center|300px|J42]]
System console is by default routed to this interface. This is typically used during the development stage.
{|class="wikitable" style="text-align: center;"
|4||-||DGND||Ground||-||-||-
|}
J42 connector is compatible with [http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232RG_CABLES.pdf FTDI TTL-232RG-VIP-WE cable]. To connect it, please use this wiring:
*J42.1: yellow wire
*J42.2: orange wire
*J42.3: red wire
*J42.4: black wire
==Ethernet connector (J16)==
[[File:SBC Lynx-J16.png|thumb|center|300px|J16]]
J16 is a standard RJ45 10/100BaseT Ethernet connector - incorporating magnetics - connected to the Ethernet controller and PHY.
J16 integrates a green status LED providing connection information:
*LED on: link established
*LED blinking: activity.
The following table describes the interface signals:
==microSD slot (J43)==
[[File:SBC Lynx-J43.png|thumb|center|300px|J43]]
J43 is a push-pull microSD card slot connected to uSDHC1 port of MX6UL processor.
The following table details the pinout:
==USB host port (J48)==
[[File:SBC Lynx-J48.png|thumb|center|300px|J48]]
J48 is a standard USB Type A right angle connector connected to the MX6UL USB_OTG2 port signals.
The following table reports the connector's pinout:
==USB OTG port (J47)==
[[File:SBC Lynx-J47.png|thumb|center|300px|J47]]
J47 is a standard USB Type micro AB connector connected to the MX6UL USB_OTG1 port signals.
The following table reports the connector's pinout:
==Mezzanine board connectors (J53/J54)==
{| class="wikitable" | width="100%"
| [[File:SBC Lynx-J53-J54.png|thumb|center|300px|J53-J54]]
| [[File:SBCLYNX_ADDON_XUAL Mounted.JPG|thumb|center|300px|Example of mezzanine usability]]
|}
J53 and J54 are 10x1-pin 2.54mm-pitch vertical headers for optional mezzanine expansion boards. These boards can be implemented to extend SBC Lynx functionalities and/or interfaces.
[5] '''To be used for voltage reference only'''.
===Handling bootstrap signals===
MEZZANINE_GP0, MEZZANINE_GP1 and MEZZANINE_GP2 are connected to LCD_DATA19, LCD_DATA22 and LCD_DATA23 respectively. As such, they act as bootstrap configuration signals as well. They can be used by application software freely and the they can be connected to user's application circuitry. However, '''any electrical interference during the processor reset cycle must be avoided'''.
There are different solutions to comply with this requirement. The following image shows a concept solution for this problem.
==One-piece interfaces (J45 / J52)==
{| class="wikitable" | width="100%"
| [[File:SBC Lynx-J45-52.png|thumb|center|300px|J45]]
| [[File:XUAE-side-mount.png|thumb|center|300px|example of possible connections on J45]]
| [[File:Mech-design-XUAE-bottom.png|thumb|center|300px|J52]]
| [[File:SBC-Lynx-onepiece-bottom.png|thumb|center|300px|example of possible connections on J52]]
|}
J45 and J52 are two interfaces designed to be populated with Samtec 1.00mm-pitch 30x2-pin FSI One-piece connectors. The peculiarity of this kind of connectors if the fact that they
*allow to mate two boards by using one connector only
| 13||-||DGND||Ground|| || ||-
|-
| 15||B9||LCD_DATA00|||| Output || IO_3.3V ||-[3]
|-
| 17||A9||LCD_DATA01|||| Output || IO_3.3V ||-[3]
|-
| 19||E10||LCD_DATA02|||| Output || IO_3.3V ||-[3]
|-
| 21||D10||LCD_DATA03|||| Output || IO_3.3V ||-[3]
|-
| 23||C10||LCD_DATA04|||| Output || IO_3.3V ||-[3]
|-
| 25||B10||LCD_DATA05|||| Output || IO_3.3V ||-[3]
|-
| 27||A10||LCD_DATA06||UART7_CTS_B|| Output || IO_3.3V ||-[3]
|-
| 29||-||DGND||Ground|| || ||-
|-
| 31||D11||LCD_DATA07||UART7_RTS_B|| Output || IO_3.3V ||-[3]
|-
| 33||B11||LCD_DATA08||FLEXCAN1_TX|| Output || IO_3.3V ||-[3]
|-
| 35||A11||LCD_DATA09||FLEXCAN1_RX|| Output || IO_3.3V ||-[3]
|-
| 37||E12||LCD_DATA10||FLEXCAN2_TX / SAI3_RX_SYNC|| Output || IO_3.3V ||-[3]
|-
| 39||D12||LCD_DATA11||FLEXCAN2_RX / SAI3_RX_BCLK|| Output || IO_3.3V ||-[3]
|-
| 41||C12||LCD_DATA12||SAI3_TX_SYNC|| Output || IO_3.3V ||-[3]
|-
| 43||-||DGND||Ground|| || ||-
| 59||-||DGND||Ground|| || IO_3.3V ||-
|-
| 2||B12||LCD_DATA13|| SAI3_TX_BCLK / USDHC2_RESET_B || Output || IO_3.3V ||-[3]
|-
| 4||A12||LCD_DATA14|| SAI3_RX_DATA / USDHC2_DATA4 || Output || IO_3.3V ||-[3]
|-
| 6||D13||LCD_DATA15|| SAI3_TX_DATA / USDHC2_DATA5 || Output || IO_3.3V ||-[3]
|-
| 8||C13||LCD_DATA16|| UART7_TX / USDHC2_DATA6 || Output || IO_3.3V ||-[3]
|-
| 10||B13||LCD_DATA17|| UART7_RX / USDHC2_DATA7 || Output || IO_3.3V ||-[3]
|-
| 12||A13||LCD_DATA18|| PWM5_OUT / USDHC2_CMD|| Output || IO_3.3V ||-[3]
|-
| 14||D14||LCD_DATA19|| PWM6_OUT / USDHC2_CLK || Output || IO_3.3V ||-[3]
|-
| 16||C14||LCD_DATA20|| ECSPI1_SCLK / USDHC2_DATA0 || Output || IO_3.3V ||SPI1 is available only if NOR is not mounted, [3]
|-
| 18||B14||LCD_DATA21|| ECSPI1_SS0 / USDHC2_DATA1 || Output || IO_3.3V ||SPI1 is available only if NOR is not mounted, [3]
|-
| 20||A14||LCD_DATA22|| ECSPI1_MOSI / USDHC2_DATA2 || Output || IO_3.3V ||SPI1 is available only if NOR is not mounted, [3]
|-
| 22||B16||LCD_DATA23|| ECSPI1_MISO / USDHC2_DATA3|| Output || IO_3.3V ||SPI1 is available only if NOR is not mounted, [3]
|-
| 24||-||DGND||Ground|| || ||-
[2] This signal can be routed here instead of connector J48. Please refer to the [mailto:sales@dave.eu Sale Deparment] for more details.
[3] LCD_DATAx signals act as bootstrap configuration pins as well. They can be used by application software freely and they can be connected to user's application circuitry. However, '''any electrical interference during the processor reset cycle must be avoided'''. Please see [[#Handling bootstrap signals|Handling bootstrap signals]] section for more details.
==DWM WiFi/Bluetooth module connector (J46)==
[[File:SBC Lynx-J46.png|thumb|center|300px|J46]]
J46 is a 30-pins SlimStack™ Receptacle 0.50mm pitch that allows to connect to DAVE Embedded Systems' DWM Wifi/BT module.
The following table reports the connector's pinout:
{|class="wikitable" style="text-align: center;"
! rowspan="3" style="text-align: center; font-weight: bold;" | P/Nand image
! colspan="5" style="text-align: center; font-weight: bold;" | MPUART0
! colspan="5" style="text-align: center; font-weight: bold;" | MPUART1
| style="text-align: center; font-weight: bold;" | Type
|-
| style="text-align: center;" | XUBx0xxxxx[[File:SBC Lynx-top.png|thumb|center|100px|XUBx0xxxxx ]]
| style="text-align: center;" | J34
| style="text-align: center;" | Right-angle male DB9
| style="text-align: center;" | UART8
| style="text-align: center;" | aaaSee [[#RS232 on DB9 (J34, J21)|this section]].
| style="text-align: center;" | RS232
| style="text-align: center;" | J21
| style="text-align: center;" | Right-angle male DB9
| style="text-align: center;" | UART3
| style="text-align: center;" | cccSee [[#RS232 on DB9 (J34, J21)|this section]].
| style="text-align: center;" | RS485
|-
| style="text-align: center;" | XUBx1xxxxx[[File:SXUBx1xxx.png|thumb|center|100px|XUBx1xxxxx ]]
| style="text-align: center;" | J38
| style="text-align: center;" | Phoenix 1755749 MSTBVA2.5/3-G5.08
| style="text-align: center;" | UART8
| style="text-align: center;" | bbbSee [[#RS485 on Phoenix 1755749 MSTBVA2.5/3-G5.08 (vertical; J38, J39)|this section]].
| style="text-align: center;" | RS485
| style="text-align: center;" | not populated
The following sections detail connectcors' pinout for the supported configuration. In case RS422 or RS485 configurations are used, termination options are selectable by acting on S12 switches, as described in [[Multiprotocol UARTs settings (S12)|this section]].
=====RS232 on DB9 (J34, J21)=====
{| class="wikitable" | width="100%"
|[[File:SBC Lynx-J34.png|thumb|center|300px|J34]]
|[[File:SBC Lynx-J21.png|thumb|center|300px|J21]]
|}
{|class="wikitable" style="text-align: center;"
|+MPUART0J34
|-
!Pin #
{|class="wikitable" style="text-align: center;"
|+MPUART1J21
|-
!Pin #
|-
|}
=====RS422 on DB9 (J34, J21)=====
{|class="wikitable" style="text-align: center;"
|+MPUART0J34
|-
!Pin #
{|class="wikitable" style="text-align: center;"
|+MPUART1J21
|-
!Pin #
=====RS485 on DB9 (J34, J21)=====
{|class="wikitable" style="text-align: center;"
|+MPUART0J34
|-
!Pin #
{|class="wikitable" style="text-align: center;"
|+MPUART1J21
|-
!Pin #
|-
|}
=====RS232 on Phoenix 1755749 MSTBVA2.5/3-G5.08 (vertical; J38, J29J39)===== {| class="wikitable outercollapse" | width="100%"|[[File:SBC Lynx-J38.png|thumb|center|300px|J38]]|[[File:SBC Lynx-J39.png|thumb|center|300px|J39]]|}
{|class="wikitable" style="text-align: center;"
|+MPUART0J38
|-
!Pin #
{|class="wikitable" style="text-align: center;"
|+MPUART1J39
|-
!Pin #
|-
|}
=====RS232 on Phoenix 1757255 MSTBVA2.5/3-G5.08 (right-angle; J38, J29J39)=====
{|class="wikitable" style="text-align: center;"
|+MPUART0J38
|-
!Pin #
{|class="wikitable" style="text-align: center;"
|+MPUART1J39
|-
!Pin #
|}
=====RS485 on Phoenix 1755749 MSTBVA2.5/3-G5.08 (vertical; J38, J29J39)=====
{|class="wikitable" style="text-align: center;"
|+MPUART0J38
|-
!Pin #
{|class="wikitable" style="text-align: center;"
|+MPUART1J39
|-
!Pin #
|-
|}
=====RS485 on Phoenix 1757255 MSTBVA2.5/3-G5.08 (right-angle; J38, J29J39)=====
{|class="wikitable" style="text-align: center;"
|+MPUART0J38
|-
!Pin #
{|class="wikitable" style="text-align: center;"
|+MPUART1J39
|-
!Pin #
=====RS485 alternative pinout for DB9 connector=====
[[File:SBC Lynx-J21.png|thumb|center|300px|J21]]
On request, it is possible to implement the following pinout.
{|class="wikitable" style="text-align: center;"
===CAN (J40 or J21)===
{| class="wikitable outercollapse" | width="100%"
|[[File:SBC Lynx-J40.png|thumb|center|300px|J40]]
|[[File:SBC Lynx-J21.png|thumb|center|300px|J21]]
|}
CAN interface is associated to the i.MX6UL's FLEXCAN1 controller. Transceiver is Texas Instruments SN65HVD23x.
If J21 is selected, MPUART1 is not available and the connector's pinout is the one detailed in the following table.
{|class="wikitable" style="text-align: center;"
|+CAN interface on J40J21
|-
!Pin #
!Notes
|-
| 1||Shieldnot connected||CAN_SHIELDn/a||
|-
| 2||not connectedDominant low||n/aCAN_M||
|-
| 3||Ground||CAN_GND||
|-
| 4||Dominant lownot connected||CAN_Mn/a||
|-
| 5||not connectedShield||n/aCAN_SHIELD||
|-
| 6||not connected||n/a||
|-
| 7||not connectedDominant high||n/aCAN_P||
|-
| 8||Dominant highnot connected||CAN_Pn/a||
|-
| 9||not connected||n/a||
J40 is a 0.200-inch pitch 3-pin shrouded header (Phoenix 1755749 MSTBVA2.5/3-G5.08). Please refer to the following table for the detailed pinout.
{|class="wikitable" style="text-align: center;"
|+CAN interface on J21J40
|-
!Pin #
==CPU ONOFF / Power reset connector (J50)==
[[File:SBC Lynx-J50.png|thumb|center|300px|J50]]
J50 is a 0.100in-pitch 4-pin male header that allows connection to signals needed to implement advanced power modes.
=Buttons=
==Reset button (S11)==
[[File:SBC Lynx-S11.png|thumb|center|300px|S11]]
When pressed, a full power-up cycle is triggered, resulting in a complete hardware reset of the system.
=Switches=
==Boot mode (S12)==
[[File:SBC Lynx-S12.png|thumb|center|300px|S12]]
Please refer to [[Booting_options_(SBC_Lynx)|this page]].
==Multiprotocol UARTs settings (S12)==
===RS422 configuration===
| rowspan="2" style="text-align: center;" | 3
| style="text-align: center;" | on
| Connect 120R Termination 120 Ohm termination for Trasmitter Pairtransmitter pair
|-
| style="text-align: center;" | off
| Disconnect any Termination termination for Trasmitter Pairtransmitter pair
|-
| rowspan="2" style="text-align: center;" | 4
| style="text-align: center;" | on
| Connect 120R Termination 120 Ohm termination for Receiver Pairreceiver pair
|-
| style="text-align: center;" | off
| Disconnect any Termination termination for Receiver Pairreceiver pair
|}
| rowspan="2" style="text-align: center;" | 5
| style="text-align: center;" | on
| Connect 120R Termination 120 Ohm termination for Trasmitter Pairtransmitter pair
|-
| style="text-align: center;" | off
| Disconnect any Termination termination for Trasmitter Pairtransmitter pair
|-
| rowspan="2" style="text-align: center;" | 6
| style="text-align: center;" | on
| Connect 120R Termination 120 Ohm termination for Receiver Pairreceiver pair
|-
| style="text-align: center;" | off
| Disconnect any Termination termination for Receiver Pairreceiver pair
|}
===RS485 configuration===
{| class="wikitable" style="text-align: center;"
