• Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
  • Ground
    A common return path for electric current. Commonly known as ground.
  • Net Portal
    A net identifier used to create connectivity to other Net Portal with the same designator. #portal
  • Power Net Portal
    Power net portal is a special schematic object used to define a power or ground net. Power ports allow you to conveniently indicate a power net at any location in the design. Power nets of the same designator automatically connect throughout your design #portal #power
  • Generic Resistor
    A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ī© 10Ī© 100Ī© 1.0kĪ© 10kĪ© 100kĪ© 1.0MĪ© 1.1Ī© 11Ī© 110Ī© 1.1kĪ© 11kĪ© 110kĪ© 1.1MĪ© 1.2Ī© 12Ī© 120Ī© 1.2kĪ© 12kĪ© 120kĪ© 1.2MĪ© 1.3Ī© 13Ī© 130Ī© 1.3kĪ© 13kĪ© 130kĪ© 1.3MĪ© 1.5Ī© 15Ī© 150Ī© 1.5kĪ© 15kĪ© 150kĪ© 1.5MĪ© 1.6Ī© 16Ī© 160Ī© 1.6kĪ© 16kĪ© 160kĪ© 1.6MĪ© 1.8Ī© 18Ī© 180Ī© 1.8KĪ© 18kĪ© 180kĪ© 1.8MĪ© 2.0Ī© 20Ī© 200Ī© 2.0kĪ© 20kĪ© 200kĪ© 2.0MĪ© 2.2Ī© 22Ī© 220Ī© 2.2kĪ© 22kĪ© 220kĪ© 2.2MĪ© 2.4Ī© 24Ī© 240Ī© 2.4kĪ© 24kĪ© 240kĪ© 2.4MĪ© 2.7Ī© 27Ī© 270Ī© 2.7kĪ© 27kĪ© 270kĪ© 2.7MĪ© 3.0Ī© 30Ī© 300Ī© 3.0KĪ© 30KĪ© 300KĪ© 3.0MĪ© 3.3Ī© 33Ī© 330Ī© 3.3kĪ© 33kĪ© 330kĪ© 3.3MĪ© 3.6Ī© 36Ī© 360Ī© 3.6kĪ© 36kĪ© 360kĪ© 3.6MĪ© 3.9Ī© 39Ī© 390Ī© 3.9kĪ© 39kĪ© 390kĪ© 3.9MĪ© 4.3Ī© 43Ī© 430Ī© 4.3kĪ© 43KĪ© 430KĪ© 4.3MĪ© 4.7Ī© 47Ī© 470Ī© 4.7kĪ© 47kĪ© 470kĪ© 4.7MĪ© 5.1Ī© 51Ī© 510Ī© 5.1kĪ© 51kĪ© 510kĪ© 5.1MĪ© 5.6Ī© 56Ī© 560Ī© 5.6kĪ© 56kĪ© 560kĪ© 5.6MĪ© 6.2Ī© 62Ī© 620Ī© 6.2kĪ© 62KĪ© 620KĪ© 6.2MĪ© 6.8Ī© 68Ī© 680Ī© 6.8kĪ© 68kĪ© 680kĪ© 6.8MĪ© 7.5Ī© 75Ī© 750Ī© 7.5kĪ© 75kĪ© 750kĪ© 7.5MĪ© 8.2Ī© 82Ī© 820Ī© 8.2kĪ© 82kĪ© 820kĪ© 8.2MĪ© 9.1Ī© 91Ī© 910Ī© 9.1kĪ© 91kĪ© 910kĪ© 9.1MĪ© #generics #CommonPartsLibrary
  • Generic Capacitor
    A generic fixed capacitor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
  • Generic Inductor
    A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
  • RMCF0805JT47K0
    47 kOhms Ā±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
  • 875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
  • CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
Check that none of the unconnected pins require pull-up or pull-down resistors t...

@copilot Check that none of the unconnected pins require pull-up or pull-down resistors to ensure proper function.
10mo
Given the components listed in your project, you have two Hirose Electric DF40C-100DS-0.4V51 connectors (designated as J1 and J2) and a Silvertel AG9712-2BR module. To determine the need for pull-up or pull-down resistors on unconnected pins, we need to consider the typical usage and datasheets of these components.
For Hirose Electric DF40C-100DS-0.4V51 Connectors (J1 and J2)
These are connectors, and the need for pull-up or pull-down resistors on their pins depends on what they connect to. Generally, for connector pins directly interfacing with microcontrollers (MCUs) or other integrated circuits (ICs), it's the connected IC's datasheet (in this case, possibly a compute module like Raspberry Pi CM4's GPIOs) that specifies whether certain lines require pull-up or pull-down resistors. Such resistors are often used for I2C bus lines (SDA/SCL with pull-ups), GPIOs configured for certain functionalities, or to ensure a defined state on unused pins.
For Silvertel AG9712-2BR Module
  • VA1, VA2, VB1, and VB2: These pins are typically associated with the VoIP analog output interface. In most applications, they won't require pull-up or pull-down resistors but should be appropriately filtered and connected according to the module's application circuits.
  • IC_1 and IC_2: These pins are internally connected and often don't require any external resistors. They are typically used for factory testing or specific configurations based on the datasheet or application notes.
  • NC (No Connection): This pin should not be connected and thus does not require any resistor.
  • -VDC and +VDC: These are power supply pins and will not need pull-up or pull-down resistors. Ensure they are connected to the appropriate power source as specified in the datasheet.
  • ADJ: Depending on the specific use case (e.g., output voltage adjustment), this pin might be left unconnected or connected through a resistor to ground or VDC. Check the datasheet for any specific guidance.
Recommendations:
  • Cross-reference the datasheets: For all ICs and modules you are interfacing with (especially for the CM4 module connected to the DF40C-100DS-0.4V51 connectors), carefully check their datasheets or application notes for any specific instructions on pull-up or pull-down resistors.
  • Default assumption for GPIOs: If specific guidance is not available and you have unconnected GPIO pins, a common practice is to add 10kĪ© pull-up or pull-down resistors to keep them in a known state and prevent floating inputs, but this depends on the intended circuit's behavior.
Please check the datasheets or application notes for the specific components you're interfacing with (Raspberry Pi CM4 for J1 and J2, and the specific application circuit for AG9712-2BR) for definitive guidance. Without exact details on the connections and external circuitry, the recommendations above are based on common practices and may need adjustments to fit your exact requirements.
10mo
J2
J1
J3

CM4 Template

CM4 Template
Description

Created
March 10th 2024
Last updated by ziondido
a year ago
1 Contributor(s)
ziondido

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i want to connect to this cm4 an POE
@copilot i want to connect to this cm4 an POE
10mo
To connect a Compute Module 4 (CM4) to Power-over-Ethernet (PoE), you would typically utilize a PoE HAT (Hardware Attached on Top) specifically designed for the CM4 or use an external PoE splitter. The PoE HAT is a compact solution integrating the PoE functionality directly with the CM4 IO board, but if you're designing your own PCB and want to include PoE functionality, you would need to design a circuit that can handle the PoE requirements.
Assuming you are designing the PCB and want to integrate PoE directly into your design, you'll need the following components:
  1. RJ45 Ethernet Connector with PoE capabilities: This connector should support PoE so that it can receive power over the Ethernet cable. Make sure it matches the PoE standard you intend to use (e.g., IEEE 802.3af or IEEE 802.3at).
  2. PoE Module/IC: This is required to extract power from the Ethernet cable. Depending on your design constraints, you can choose a module that directly provides an appropriate voltage to power the CM4 or to an intermediate power management circuit. Popular PoE IC manufacturers include Silvertel, Microchip, and Texas Instruments.
  3. Isolation Transformer: Required for safety, ensuring that the data lines are electrically isolated from the power lines.
  4. Power Management Circuit: Based on your PoE module's output, you might need a step-down converter or a regulator to provide stable power to the CM4, which typically requires 5V.
Your design steps in regard to PoE connectivity would broadly involve:
  • Connect the RJ45 Ethernet Connector to the input of the PoE Module.
  • Connect the PoE Module's output to the Power Management Circuit to regulate the voltage down to what is required by the CM4.
  • Connect the Power Management Circuit's output to the CM4 power input.
Given the technical specifics and standards involved (like IEEE 802.3af/at for PoE), it's crucial to refer to the datasheets of the PoE module/IC and the CM4 for exact requirements and compatibility.
Remember, handling PoE can be quite intricate due to the high voltages involved and the necessity for proper isolation to ensure safety and device protection. If you're not confident in designing with PoE, using a commercial PoE HAT or splitter might be a safer and quicker solution.
10mo
please give me the poe component i need and tell me how to conenct it
10mo
For integrating Power-over-Ethernet (PoE) into your design with a Raspberry Pi Compute Module 4 (CM4), let's use a popular PoE module for simplicity, like the Silvertel Ag9900. This PoE module is compact, efficient, and supports the IEEE 802.3af standard, providing an isolated 12V output (there are also versions for other voltages).
Required Components:
  • PoE Module: Silvertel Ag9900 or equivalent.
  • RJ45 Connector with Magnetics: Suitable for Ethernet communication and designed for PoE applications.
  • DC-DC Converter (Buck Converter): To step down the voltage from 12V (output from the PoE module) to 5V suitable for the CM4.
  • Diode (Schottky): For protection and ensuring current flows in the correct direction.
  • Capacitors: For smoothing the output from the DC-DC converter.
Connection Steps:
  1. Ethernet to PoE Module:
    • Connect the RJ45 connector to the Silvertel Ag9900 input according to the Silvertel datasheet. This typically involves connecting the center taps of the transformer built into the RJ45 connector to the PoE module input pins.
  2. PoE Module to DC-DC Converter:
    • Output Voltage (Vout) from the PoE module (e.g., 12V from the Ag9900) connects to the input of your DC-DC buck converter. Please ensure to check the input voltage range of your buck converter to ensure compatibility.
    • Place Schottky diode on the positive line between the PoE module's output and the DC-DC converter's input to prevent reverse current.
  3. DC-DC Converter Output to CM4:
    • Connect the output of the buck converter (adjusted to 5V) to the 5V power input of the CM4 interface. Exactly where this is will depend on your specific interface board or design.
    • Include capacitors on the output of the DC-DC converter as recommended in the converter's datasheet to smooth out any ripples in the voltage.
  4. Grounding:
    • Make sure the ground from the RJ45 connector, PoE module, DC-DC converter, and CM4 are all connected to a common ground point in your design.
Important Notes:
  • Check Compatibility: Before purchasing components, confirm their compatibility and ensure they meet your project's power requirements.
  • Safety First: PoE involves high voltage (up to approximately 50V before regulation). Exercise caution during design and testing.
  • Datasheets: Always refer to the datasheets of the components for specific connection details and configurations. Datasheets will provide critical information on pinout, voltage levels, and additional circuit protection measures you might need to take.
  • Testing: Carefully test the PoE integration in a controlled environment before deploying it in a live setting.
Using PoE requires careful attention to electrical standards and safety precautions. If you're not familiar with high-voltage circuits, seeking assistance from a professional or using a pre-made solution might be advisable.
10mo
Hi! Iā€™m copilot. Think of me like an experienced electrical engineer that can he...
Hi! Iā€™m copilot. Think of me like an experienced electrical engineer that can help you brainstorm ideas, debug problems, research components, and even make wiring connections for you. Ask me questions like:
  • @copilot I'm designing a PCB for a medical device that measures heart rate and temperature. Can you give me the list of components I will need?
  • @copilot How would I connect these parts to make the LED flash at 1kHz?
  • @copilot can you choose 4 digital pins on the ATMega328P-AU that I have here to use as GPIO given that I am already using some pins for reset, the external clock, UART, and I2C.
Reach me at any time by tagging me on comments or in the chat with my handle, @copilot.
10mo
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Checks that the power traveling across a given resistor is under its rating with 50% headroom.
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Checks that IC pins that require pull up or pull down resistors have them.
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Checks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.
Checks that all parts have a part number and are available from distributors.
Reports copper elements that are shorting.
Reports parts that have no footprint.
Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.
Reports components that have been modified using the "!important" flag.
Reports terminals that are not connected properly. NOTE: Only connections to the center of pads are considered valid.
Reports nodes that are using rules that are not supported anymore.
Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.
Detect any via, trace or copper fill island that is not connected to any net.