The model "KSZ9031RNXCC" corresponds to a KSZ9031 Ethernet physical layer (PHY) device manufactured by Microchip Technology. This device is part of the KSZ9000 family of PHY chips and supports a variety of Ethernet standards. The "RNXCC" part of the model number typically indicates specific package types and configurations, but this can be confirmed through Microchip's official documentation.
Pin Function Specifications and Circuit Principle
The KSZ9031RNXCC is typically available in a 64-pin QFN package. This chip is designed to support 10/100/1000 Mbps Ethernet, and the pins are utilized for various functions including the Power supply, data communication, Clock , and configuration signals.
Here's a detai LED breakdown of the pin functions based on the typical 64-pin QFN package configuration for the KSZ9031RNXCC:
Pinout and Function Table (For 64-Pin QFN Package) Pin No. Pin Name Function Description 1 VDDIO Power supply to I/O pins 2 VSSIO Ground for I/O pins 3 MDIO Management Data I/O 4 MDC Management Data Clock 5 RESET Reset pin (active low) 6 TXD0 Transmit Data Bit 0 7 TXD1 Transmit Data Bit 1 8 TXD2 Transmit Data Bit 2 9 TXD3 Transmit Data Bit 3 10 TX_EN Transmit Enable 11 RXD0 Receive Data Bit 0 12 RXD1 Receive Data Bit 1 13 RXD2 Receive Data Bit 2 14 RXD3 Receive Data Bit 3 15 RX_DV Receive Data Valid 16 RX_ER Receive Error 17 CRS_DV Carrier Sense / Data Valid 18 COL Collision Detect 19 LED0 LED Indicator 0 20 LED1 LED Indicator 1 21 LED2 LED Indicator 2 22 LED3 LED Indicator 3 23 AVDD Analog Power Supply 24 AVSS Analog Ground 25 VDD_25 2.5V Power Supply 26 VSS_25 Ground for 2.5V system 27 RX_CLK Receive Clock 28 TX_CLK Transmit Clock 29 XTAL_OUT Crystal Oscillator Output 30 XTAL_IN Crystal Oscillator Input 31 MDC/MDIO Management Data Clock/Data I/O 32 SLEEP Sleep Mode Control 33 WAKEUP Wake Up from Sleep 34 PHY_ADDR0 PHY Address Bit 0 35 PHY_ADDR1 PHY Address Bit 1 36 PHY_ADDR2 PHY Address Bit 2 37 PHY_ADDR3 PHY Address Bit 3 38 PHY_ADDR4 PHY Address Bit 4 39 PHY_ADDR5 PHY Address Bit 5 40 MDIO_SEL MDIO Select 41 GND Ground Pin 42 TX_ER Transmit Error 43 TX_CLK Transmit Clock 44 RX_CLK Receive Clock 45 SMI Serial Management interface 46 RX_D0 Receive Data Bit 0 47 RX_D1 Receive Data Bit 1 48 RX_D2 Receive Data Bit 2 49 RX_D3 Receive Data Bit 3 50 TXD0 Transmit Data Bit 0 51 TXD1 Transmit Data Bit 1 52 TXD2 Transmit Data Bit 2 53 TXD3 Transmit Data Bit 3 54 TX_EN Transmit Enable 55 RX_ER Receive Error 56 CRS_DV Carrier Sense / Data Valid 57 COL Collision Detect 58 RXDV Receive Data Valid 59 RX_ER Receive Error 60 NC Not Connected 61 NC Not Connected 62 NC Not Connected 63 NC Not Connected 64 NC Not ConnectedFAQs (20 Common Questions)
Q: What is the power supply voltage for the KSZ9031RNXCC? A: The KSZ9031RNXCC requires a 3.3V power supply for its core and I/O circuits, with some analog pins requiring 2.5V.
Q: How many pins does the KSZ9031RNXCC package have? A: The KSZ9031RNXCC comes in a 64-pin QFN package.
Q: What is the function of the MDIO pin? A: The MDIO pin is used for the Management Data I/O in the MII/RMII interface, enabling communication between the PHY and MAC for configuration and status monitoring.
Q: What is the purpose of the RESET pin? A: The RESET pin is used to reset the device, with a logic low level indicating reset and logic high indicating normal operation.
Q: What is the function of the TXD pins? A: The TXD pins (TXD0 to TXD3) are used to transmit data from the PHY to the MAC layer in Ethernet communication.
Q: How are the RXD pins used in the KSZ9031RNXCC? A: The RXD pins (RXD0 to RXD3) receive data from the MAC layer and transmit it to the PHY.
Q: What does the TXEN pin do? A: The TXEN pin is used to enable the transmission of data by signaling that valid data is present on the TXD pins.
Q: What is the function of the LED pins? A: The LED pins (LED0 to LED3) are used to indicate the status of the Ethernet connection, such as link activity and speed.
Q: How does the PHY address work in the KSZ9031RNXCC? A: The PHY address pins (PHYADDR0 to PHYADDR5) are used to set the physical address of the device for communication on the network.
Q: Can the KSZ9031RNXCC operate in full-duplex mode? A: Yes, the KSZ9031RNXCC supports both full-duplex and half-duplex communication modes.
Q: How does the CRSDV pin work? A: The CRSDV pin indicates whether the Ethernet link is active and if valid data is being received.
Q: What is the function of the COL pin? A: The COL pin is used to detect collision events during Ethernet communication, signaling when two devices are attempting to transmit at the same time.
Q: What is the purpose of the RXER pin? A: The RXER pin indicates when there are errors in the received data, such as framing errors.
Q: What is the sleep mode functionality in the KSZ9031RNXCC? A: The SLEEP pin controls the power-saving mode, allowing the device to enter a low-power state when not in use.
Q: How does the WAKEUP pin work? A: The WAKEUP pin allows the KSZ9031RNXCC to be woken up from sleep mode when necessary.
Q: What type of oscillator does the KSZ9031RNXCC use? A: The KSZ9031RNXCC uses an external crystal oscillator connected to the XTALIN and XTALOUT pins for clock generation.
Q: What is the TXCLK pin used for? A: The TXCLK pin provides the transmit clock, synchronizing the data transmission on the TXD pins.
Q: How does the RXCLK pin function? A: The RXCLK pin provides the clock signal for data reception, synchronizing the data received on the RXD pins.
Q: What type of interface does the KSZ9031RNXCC support for management? A: The KSZ9031RNXCC supports the MII (Media Independent Interface) and RMII (Reduced Media Independent Interface) for Ethernet communication.
Q: What is the AVDD pin for? A: The AVDD pin is used to supply the analog power for the KSZ9031RNXCC.
This detailed explanation covers the pinout and functionality of all 64 pins for the KSZ9031RNXCC as well as answers to 20 common questions about the device's operation.