The "W5500" you're referring to is most likely part of the Wiznet W5500 series, which is a popular Ethernet controller IC used in various applications for connecting microcontrollers to Ethernet networks.
The W5500 is manufactured by Wiznet, a company known for its networking solutions and embedded Ethernet components. It provides a hardwired TCP/IP stack, and it’s typically used in network-connected embedded systems.
Key Information for the W5500:
Package Type: The W5500 is commonly available in LQFP-48 (Low-profile Quad Flat Package with 48 pins). However, depending on the specific variant you use, the number of pins may vary. This package allows for easy integration into standard PCB designs.
Pin Function Specifications & Circuit Principle: Since you requested a very detai LED description of all the pin functions, I’ll provide a general overview below.
Pin Function Descriptions for W5500 (LQFP-48 Package):
The W5500 in the LQFP-48 package has 48 pins, and each of these pins plays a specific role in the operation of the Ethernet controller. Here’s the detailed pinout:
Pin No. Pin Name Pin Function Description 1 VCC Power supply (3.3V) for the chip 2 GND Ground 3 /RESET Reset pin (active low, resets the chip) 4 SCS SPI Chip Select (active low, used for SPI communication) 5 SDI SPI Data Input (Master In Slave Out, MISO for SPI) 6 SDO SPI Data Output (Master Out Slave In, MOSI for SPI) 7 SCK SPI Clock (Clock signal for SPI communication) 8 INT Interrupt pin (indicates data ready or events) 9 nINT Active low interrupt pin (alternate name for INT) 10 VCC_IO IO power supply for the SPI and other pins 11 LED0 LED status pin (indicates network status) 12 LED1 LED status pin (indicates network activity) 13 TXD0 Transmit Data (Ethernet TX line) 14 TXD1 Transmit Data (Ethernet TX line) 15 RXD0 Receive Data (Ethernet RX line) 16 RXD1 Receive Data (Ethernet RX line) 17 CRS Carrier Sense (signals whether network is available) 18 COL Collision (signals network collision during data transfer) 19 MII/RMII MII (Media Independent interface ) or RMII (Reduced MII) mode pin 20 TX_CLK Transmit Clock (clock for transmitting Ethernet data) 21 RX_CLK Receive Clock (clock for receiving Ethernet data) 22 MDC Management Data Clock (for PHY management) 23 MDIO Management Data Input/Output (for PHY management) 24 PHY_RST Reset for PHY (Ethernet Physical Layer) 25 REF_CLK Reference clock (used for Ethernet timing) 26 PWDN Power Down (used for low power mode) 27 WAKE Wakeup signal (used for waking up from low-power mode) 28 RMII_MODE RMII Mode selection pin (used for RMII interface) 29 GND Ground 30 VCC Power supply (3.3V) 31 TMR1 Timer 1 (used for internal timing functions) 32 TMR2 Timer 2 (used for internal timing functions) 33 TMR3 Timer 3 (used for internal timing functions) 34 TMR4 Timer 4 (used for internal timing functions) 35 PHY_MDIO PHY Management Data Input/Output pin 36 PHY_MDC PHY Management Data Clock pin 37 PHY_RESET Reset pin for PHY (Ethernet Physical Layer) 38 SFP Small Form-factor Pluggable port (for fiber or optical connections) 39 SFP_TXD Transmit data for SFP 40 SFP_RXD Receive data for SFP 41 SFPRXCLK Receive clock for SFP 42 SFPTXCLK Transmit clock for SFP 43 SFP_RST Reset for SFP 44 MDIO Management Data Input/Output 45 MII_CLK Clock for MII interface 46 PHY_LINK Link status indicator for PHY 47 MII_CRS Carrier sense for MII interface 48 MII_COL Collision detect for MII interfaceFrequently Asked Questions (FAQ) - W5500
Q1: What is the operating voltage range of the W5500? A1: The operating voltage for the W5500 is 3.3V.
Q2: How does the W5500 communicate with a microcontroller? A2: The W5500 communicates via SPI (Serial Peripheral Interface).
Q3: What is the maximum SPI clock frequency for the W5500? A3: The maximum SPI clock frequency is 80 MHz.
Q4: How many Ethernet ports are supported by the W5500? A4: The W5500 supports 1 Ethernet port.
Q5: Does the W5500 have an integrated PHY? A5: Yes, the W5500 has an integrated Ethernet PHY.
Q6: Can the W5500 work in both MII and RMII modes? A6: Yes, the W5500 can operate in either MII or RMII mode depending on the system configuration.
Q7: How is the reset performed for the W5500? A7: Reset is performed by pulling the RESET pin low.
Q8: What type of Ethernet standard does the W5500 support? A8: The W5500 supports 10/100Mbps Ethernet communication.
Q9: Can the W5500 be used in low-power applications? A9: Yes, the W5500 has a power-down mode to reduce power consumption.
Q10: What is the purpose of the LED0 and LED1 pins? A10: LED0 and LED1 indicate the network status and activity, such as link status and data transmission.
Q11: How do I interface the W5500 with a microcontroller? A11: You can interface the W5500 with a microcontroller through the SPI interface (using pins SDI, SDO, SCK, and SCS).
Q12: What does the nINT pin do? A12: The nINT pin is used to signal interrupt events, such as when the W5500 is ready to send or receive data.
Q13: How do I select between MII and RMII modes? A13: You select between MII and RMII by setting the RMII_MODE pin appropriately.
Q14: What is the role of the MDIO and MDC pins? A14: MDIO and MDC are used for management data input/output and clock signals for the Ethernet PHY.
Q15: Can the W5500 support multiple TCP/UDP connections? A15: Yes, the W5500 supports multiple simultaneous TCP/UDP connections.
Q16: How do I configure the W5500 for different network protocols? A16: Configuration is done through the SPI interface by writing to specific control registers in the W5500.
Q17: Can the W5500 be used for high-speed data transfer? A17: Yes, the W5500 supports high-speed data transfer up to 100Mbps.
Q18: What kind of communication does the W5500 support? A18: The W5500 supports Ethernet-based communication such as TCP/IP, UDP, and more.
Q19: How can I implement wake-up functionality in my system using the W5500? A19: You can use the WAKE pin to wake up the system from low-power mode.
Q20: Is the W5500 compatible with IPv6? A20: Yes, the W5500 is compatible with both IPv4 and IPv6.
This detailed pinout and FAQ should give you a clear understanding of the W5500’s functionality, package, and usage.
