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

1,218 bytes removed, 09:28, 16 September 2021
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<section begin="History" />
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<section end="History" /><section begin="Body" />
==PCIe interface ==
''TBD: sostituire le sezioni con le informazioni sull'uso della periferica e del suo connettore''=== Description ===''Nell'esempio di seguito c'è la descrizione dell'interfaccia UART/console''The PCI Express interface can be available on the Evaluation Kit at the connector J36. This connector is not mounted by default.
=== Description ===J36 is a USB3.0 Type-A connector that delivers 1x PCIe slot. An external adapter is needed to route the signals to a standard PCIe connector.
The PCIe interface available on the Evaluation Kit at the connector external adapter can be found as a ''TBD:JxxxPCIe riser'', commonly used in Ethereum mining.
''Jxx'' is a 'WARNING:'TBD:connector-type'' header connector for the RS232 two-wires UART3 do not connect USB devices to this port, used for debug purposes (bootloader and operating system serial console).
{| class="wikitable"
! latexfontsize="scriptsize"| Pin#! latexfontsize="scriptsize"| SOM Pin#! latexfontsize="scriptsize"| Pin name! latexfontsize="scriptsize"| Pin function! latexfontsize="scriptsize"| Pin Notes
|-
|1,2,4,6,,7,8,10
| -
| N.A.VBUS| N.C.PCIE_WAKE#| Not connectedRouted to a test point
|-
| 32| J1J15.189157| RS232_RXD-| Receive linePCIE2_REF_CN_CLKN
|
|-
| 3
| J1J15.187155| RS232_TXD+| Transmit linePCIE2_REF_CN_CLKP
|
|-
| 94| -|GND| PCIE_PERST#| Routed to a test point|-|5|J15.159|SSRX-|PCIE_TXN_P|Internally decoupled with 100nF series|-|6|J15.161|SSRX+|PCIE_TXN_N|Internally decoupled with 100nF series|-|7
| -
| DGNDGND_D| Ground||-|8|J15.163|SSTX-|PCIE_RXN_P||-|9|J15.165|SSTX+|PCIE_RXN_N|
|}
=== Device mapping ===
UART3 The PCI express peripheral is mapped to <code>/dev/ttymxc2</code> the corresponding device in Linux. The peripheral is used as depending on the default serial console, both for the bootloader associated kernel device driver and on 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: 115200,N,8,1
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[[Category:ORCA SOM]]
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