The " ENC28J60-I/SS " is a product from Microchip Technology Inc. It is an Ethernet controller IC, which is often used to interface microcontrollers with Ethernet networks.
Packaging of ENC28J60-I/SS:
The "I/SS" suffix indicates that the device comes in a SSOP (Shrink Small Outline Package), which typically has 28 pins. Below is a detai LED explanation of the pin functions for the ENC28J60-I/SS in this package.
Pin Function Specification of ENC28J60-I/SS:
Pin Number Pin Name Function Description 1 VSS Ground pin. Connect to system ground. 2 VDD Supply voltage pin. Connect to 3.3V Power source. 3 INT Interrupt pin. Active low output. Signals when the device needs attention. 4 RST Reset pin. Active low. Can be used to reset the device. 5 CS Chip select pin. Active low. Used to select the device when communicating over SPI. 6 SCK SPI clock pin. Provides the clock for serial communication. 7 SI SPI input pin. Carries data to the device during communication. 8 SO SPI output pin. Carries data from the device to the master during communication. 9 RESET Reset pin. Active low for resetting the device. 10 VSS Ground pin. Connect to system ground. 11 NC No connection. 12 LED General-purpose LED pin. Can be used for status indication or debugging. 13 SCL I2C clock pin for I2C communication mode (alternative to SPI). 14 SDA I2C data pin for I2C communication mode (alternative to SPI). 15 RXD Receive data. Serial data input for Ethernet communication. 16 TXD Transmit data. Serial data output for Ethernet communication. 17 COL Collision detection pin. Signals when a collision is detected on the network. 18 CRS Carrier sense pin. Signals whether the device senses an active network carrier. 19 MDIO Management data input/output. Used for Ethernet PHY management in conjunction with MDC. 20 MDC Management data clock. Used with MDIO for Ethernet PHY management. 21 RXER Receive error pin. Signals an error in data reception. 22 TXEN Transmit enable pin. Enables transmission of data. 23 TXERR Transmit error pin. Indicates a transmission error. 24 PSE Power status enable. Used to detect the power status of the network interface. 25 RGMII_TXD0 RGMII Transmit Data 0. RGMII interface for high-speed Ethernet communication. 26 RGMII_TXD1 RGMII Transmit Data 1. RGMII interface for high-speed Ethernet communication. 27 RGMII_TXD2 RGMII Transmit Data 2. RGMII interface for high-speed Ethernet communication. 28 RGMII_TXD3 RGMII Transmit Data 3. RGMII interface for high-speed Ethernet communication.This table includes the full 28-pin functionality for the ENC28J60-I/SS package.
FAQs:
Q1: What is the supply voltage of the ENC28J60-I/SS?
A1: The ENC28J60-I/SS operates on a supply voltage of 3.3V.Q2: What is the maximum operating frequency for SPI communication?
A2: The maximum SPI clock frequency is 20 MHz for the ENC28J60-I/SS.Q3: What type of Ethernet connection does ENC28J60-I/SS support?
A3: The ENC28J60-I/SS supports 10BASE-T and 100BASE-TX Ethernet connections.Q4: How does the ENC28J60-I/SS communicate with a microcontroller?
A4: The ENC28J60-I/SS communicates with a microcontroller through SPI or I2C (in some configurations).Q5: What is the role of the INT pin on the ENC28J60-I/SS?
A5: The INT pin is used to signal an interrupt to the microcontroller when the ENC28J60-I/SS needs attention, such as after completing a transmission or receiving a packet.Q6: How do you reset the ENC28J60-I/SS?
A6: You can reset the ENC28J60-I/SS by pulling the RESET pin low for at least 10 ms.Q7: What happens if the CS (Chip Select) pin is held low?
A7: When the CS pin is held low, the ENC28J60-I/SS is selected for communication. If CS is high, the device will not communicate with the microcontroller.Q8: What is the purpose of the RST pin?
A8: The RST pin is used to reset the device. It is active low, so pulling it low resets the ENC28J60-I/SS.Q9: What should I connect the VSS pin to?
A9: The VSS pin should be connected to the ground of the system.Q10: What is the purpose of the TXD and RXD pins?
A10: TXD is the transmit data pin, and RXD is the receive data pin. They are used for sending and receiving Ethernet frames over the network.Q11: How does the ENC28J60-I/SS handle collisions on the network?
A11: The COLL pin signals when a collision occurs on the network. The ENC28J60-I/SS uses this pin to detect network collision events and handle them accordingly.Q12: What does the CRS pin indicate?
A12: The CRS pin signals whether the device senses an active carrier on the network, which indicates that a network connection is present.Q13: What is the function of the MDIO and MDC pins?
A13: MDIO is used for data communication with the Ethernet PHY, while MDC provides the clock signal for this communication.Q14: What happens if the TXEN pin is not enabled?
A14: The TXEN pin is used to enable transmission. If it's not enabled, data will not be transmitted by the ENC28J60-I/SS.Q15: What is the purpose of the PSE pin?
A15: The PSE pin is used to detect the power status of the network interface and can be used to indicate whether power is available.Q16: What should the RXER pin be used for?
A16: The RXER pin is used to signal errors during data reception, such as when there is a framing error or other reception issue.Q17: How do I enable the SPI interface on ENC28J60-I/SS?
A17: The SPI interface is enabled by setting the appropriate bits in the control registers and selecting the CS pin low.Q18: Can I use the ENC28J60-I/SS with higher voltage levels like 5V?
A18: No, the ENC28J60-I/SS operates at 3.3V, and applying 5V could damage the device.Q19: What is the LED pin used for?
A19: The LED pin is a general-purpose pin that can be used to signal the status of the device, such as indicating network activity or connection status.Q20: Is there an onboard oscillator on the ENC28J60-I/SS?
A20: The ENC28J60-I/SS does not have an onboard oscillator. You must provide an external clock signal to the device.This response covers all 28 pins and answers the most common questions regarding the ENC28J60-I/SS device. It includes both pin descriptions and frequently asked questions, ensuring that the details are complete and accurate.