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pmod:pmodrj45:reference-manual [2022/09/08 20:55] – changed forum.digilentinc.com to forum.digilent.com Jeffreypmod:pmodrj45:reference-manual [2023/05/03 15:23] (current) – Martha
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 +====== Pmod RJ45 Reference Manual ======
  
 +<WRAP center important round 60%>
 +The Pmod RJ45 is no longer in production. Once the current stock is depleted, it will be retired. 
 +</WRAP>
 +
 +The Digilent Pmod RJ45 (Revision A) enables long distance connectivity between devices by providing users with a standard RJ45 (8P8C) port.
 +
 +{{Digilent Image Gallery 
 +| image = {{:reference:pmod:pmodrj45:pmodrj45-0.png?direct |}}
 +| image = {{:reference:pmod:pmodrj45:pmodrj45-1.png?direct |}}
 +| image = {{:reference:pmod:pmodrj45:pmodrj45-2.png?direct |}}
 +| image = {{:reference:pmod:pmodrj45:pmodrj45-3.png?direct |}}
 +}} 
 +
 +== Download This Reference Manual ==
 +  * {{:reference:pmod:pmodrj45:pmodrj45_rm.pdf| PDF}}
 +
 +----
 +
 +===== Features =====
 +  * Standard RJ45 (8P8C) port
 +  * Male and female connectors for host and peripheral connectivity
 +  * 6-pin Pmod connector with %%GPIO%% interface
 +
 +----
 +=====Functional Description =====
 +The %%Pmod RJ45%% utilizes the traces on RJ45 cables (Ethernet cables) to transmit signals through the cable to the other side. Although the cables are typically used for Ethernet, the data lines can also be used as general purpose inputs and/or outputs as they are essentially just wires. The benefit is to be able to use a widely used shielded cable that nicely contains and conceals all of the data and power wires.
 +
 +----
 +===== Interfacing with the Pmod=====
 +The %%Pmod RJ45%% communicates with the host board via the [[pmod:communication_protocols:gpio|GPIO protocol]]. Since there are four data wires available, other communication protocols such as UART, SPI, or I²C could also be sent through these wires as long as the RJ45 cable is not prohibitively long for the the specific protocol to work correctly.
 +
 +
 +==== Pinout Description Table ====
 +^  Pin  ^  Signal  ^  Description             ^
 +|  1    |  7       |  Signal 7 of the %%RJ45%% port  |
 +|  2    |  5       |  Signal 5 of the %%RJ45%% port  |
 +|  3    |  3       |  Signal 3 of the %%RJ45%% port  |
 +|  4    |  1       |  Signal 1 of the %%RJ45%% port  |
 +|  5    |  GND     |  Power Supply Ground     |
 +|  6    |  VCC     |  Power Supply (3.3V/5V)  |
 +
 +
 +Any external power applied to the %%Pmod RJ45%% must be within the limitations of the device receiving power on the other end of the Ethernet cable.
 +
 +----
 +===== Physical Dimensions =====
 +The pins on the pin header are spaced 100 mil apart. The PCB is 1.375 inches long on the sides parallel to the pins on the pin header and 0.8 inches long on the sides perpendicular to the pin header.
 +----
 +===== Additional Information =====
 +The schematics of the male %%Pmod RJ45%% are available {{reference:pmod:pmodrj45:pmodrj45m_sch.pdf|here}}; the female schematics are available {{reference:pmod:pmodrj45:pmodrj45f_sch.pdf|here}}. 
 +
 +Example code demonstrating how to get information from the %%Pmod RJ45%% can be found [[pmod:pmodrj45:start#example_projects|here]]. 
 +
 +If you have any questions or comments about the %%Pmod RJ45%%, feel free to post them under the appropriate section ("Add-on Boards") of the [[https://forum.digilent.com/|Digilent Forum]].