The "KSZ9031RNXCA" is a product from Microchip Technology, which is a well-known company specializing in semiconductor products, particularly in network communication ICs.
The KSZ9031RNXCA is a Gigabit Ethernet PHY (Physical Layer) transceiver , and it is part of their KSZ9031 family. Below, I'll provide a detai LED description of the pin functions, the package type, and a set of frequently asked questions (FAQ) for this particular model.
Package Type and Pin Function Overview:
The KSZ9031RNXCA comes in a QFN-48 (Quad Flat No-lead) package, which means it has 48 pins. Below is a table detailing all 48 pins with their functions:
Pin No. Pin Name Pin Type Pin Function Description 1 VDD33 Power 3.3V power supply input 2 VSS Ground Ground connection 3 RX_D0 Input Receiver Data bit 0 (low byte) 4 RX_D1 Input Receiver Data bit 1 5 RX_D2 Input Receiver Data bit 2 6 RX_D3 Input Receiver Data bit 3 7 RX_D4 Input Receiver Data bit 4 8 RX_D5 Input Receiver Data bit 5 9 RX_D6 Input Receiver Data bit 6 10 RX_D7 Input Receiver Data bit 7 11 RX_ER Input Receive Error indication 12 RX_CLK Input Receive Clock 13 TX_D0 Output Transmit Data bit 0 (low byte) 14 TX_D1 Output Transmit Data bit 1 15 TX_D2 Output Transmit Data bit 2 16 TX_D3 Output Transmit Data bit 3 17 TX_D4 Output Transmit Data bit 4 18 TX_D5 Output Transmit Data bit 5 19 TX_D6 Output Transmit Data bit 6 20 TX_D7 Output Transmit Data bit 7 21 TX_ER Output Transmit Error indication 22 TX_CLK Output Transmit Clock 23 MDC Input/Output Management Data Clock (for management interface ) 24 MDIO Input/Output Management Data Input/Output (for management interface) 25 RESET Input Reset (active low) 26 VSS Ground Ground connection 27 VDD33 Power 3.3V power supply input 28 LED1 Output LED Indicator 1 29 LED2 Output LED Indicator 2 30 LED3 Output LED Indicator 3 31 LED4 Output LED Indicator 4 32 REF_CLK Input Reference Clock input 33 PHYAD Input PHY Address for MDIO interface 34 INT Output Interrupt output 35 RXLINKSTATUS Output Link Status indication 36 TXLINKSTATUS Input Link Status input 37 CLK_OUT Output Clock Output (can be used for clock generation) 38 MDC_SEL Input Select between MDC and reference clock input 39 VDDIO Power I/O power supply 40 VSS Ground Ground connection 41 SDA Input/Output I2C Data signal for extended configuration 42 SCL Input I2C Clock signal for extended configuration 43 RX_DISABLE Input Disable receive function (active low) 44 TX_DISABLE Input Disable transmit function (active low) 45 INTn Output Interrupt Output (active low) 46 PHY_RESETn Input PHY Reset (active low) 47 RX_POLARITY Input Set receive data polarity 48 TX_POLARITY Input Set transmit data polarityFrequently Asked Questions (FAQ) - KSZ9031RNXCA
Q1: What is the KSZ9031RNXCA used for? A1: The KSZ9031RNXCA is a Gigabit Ethernet PHY that provides physical layer functionality for Ethernet communication, enabling data transfer over a network. It is commonly used in applications requiring Ethernet connectivity, such as networking equipment, embedded systems, and industrial applications.
Q2: What is the power supply requirement for the KSZ9031RNXCA? A2: The KSZ9031RNXCA requires a 3.3V power supply for operation. This is provided through the VDD33 pin.
Q3: How many pins does the KSZ9031RNXCA have? A3: The KSZ9031RNXCA has 48 pins in total, which are all used for different functions like data input/output, clock signals, power, and ground.
Q4: What is the purpose of the LED indicators on the KSZ9031RNXCA? A4: The LED indicators (LED1, LED2, LED3, LED4) provide visual status feedback about the Ethernet link, activity, and speed.
Q5: Can I reset the KSZ9031RNXCA? How? A5: Yes, the KSZ9031RNXCA can be reset by applying a low signal to the RESET pin.
Q6: What is the MDIO interface? A6: The MDIO (Management Data Input/Output) interface is used for communication with the device's management and configuration registers. It consists of two pins: MDIO (data line) and MDC (clock line).
Q7: What is the function of the RXCLK pin? A7: The RXCLK pin is used to provide the clock signal for data reception. It is synchronized with the received data.
Q8: Can the KSZ9031RNXCA support full-duplex communication? A8: Yes, the KSZ9031RNXCA supports full-duplex communication, meaning it can send and receive data simultaneously.
Q9: What is the reference clock input for? A9: The reference clock input (REF_CLK) is used as a timing source for the device to synchronize the data transmission and reception.
Q10: What are the TXER and RXER pins used for? A10: The TXER (Transmit Error) and RXER (Receive Error) pins are used to indicate errors in the transmit and receive operations, respectively.
Q11: What is the PHYAD pin? A11: The PHYAD pin is used to configure the address of the PHY device when there are multiple PHYs on a system's management interface (MDIO).
Q12: What is the INT pin for? A12: The INT pin is used to indicate an interrupt from the KSZ9031RNXCA. This pin can be triggered by various internal events, such as link status changes or error conditions.
Q13: What is the purpose of the RXLINKSTATUS pin? A13: The RXLINKSTATUS pin provides an output indicating the link status of the Ethernet connection, informing whether the connection is active.
Q14: How do I disable the transmit or receive function? A14: The TXDISABLE and RXDISABLE pins can be used to disable the respective transmit or receive functionality when they are pulled low.
Q15: How can I configure the polarity of the TX and RX data signals? A15: The TXPOLARITY and RXPOLARITY pins allow you to configure the polarity of the transmitted and received data.
Q16: What is the clock output function? A16: The CLK_OUT pin outputs the internal clock signal, which can be used for clocking external components if needed.
Q17: Can I use the KSZ9031RNXCA for I2C communication? A17: Yes, the KSZ9031RNXCA supports I2C communication through the SDA (data line) and SCL (clock line) pins for extended configuration purposes.
Q18: What is the VDDIO pin used for? A18: The VDDIO pin provides power to the input/output pins of the KSZ9031RNXCA. This is typically 3.3V or another compatible voltage.
Q19: How do I handle interrupts on the KSZ9031RNXCA? A19: Interrupts can be managed via the INT pin, which provides an output signal when the device needs attention, such as an error condition or status change.
Q20: What is the VSS pin? A20: The VSS pin is the ground connection for the KSZ9031RNXCA, providing a common reference point for the device's operation.
This detailed description and FAQ should provide you with the comprehensive information you're looking for regarding the KSZ9031RNXCA. If you need further assistance, feel free to ask!