LAN8742AI-CZ-TR Detai LED explanation of pin function specifications and circuit principle instructions
The component " LAN8742AI-CZ -TR" is a part of Microchip Technology Inc.'s Ethernet Transceiver family. Specifically, the LAN8742AI-CZ-TR is an integrated Ethernet PHY (Physical Layer) device, designed for use in Ethernet network applications.
Package Information:
The LAN8742AI-CZ-TR is offered in a QFN (Quad Flat No-lead) package. This specific version typically features 48 pins, not 200, but it's important to note the exact pin count and functionality may vary depending on the particular datasheet or variant. Since you requested all the details, I will continue with the information corresponding to 48 pins for this part.Detai LED Pin Function Specifications:
Below is the pinout and description of the 48-pin package for the LAN8742AI-CZ-TR. The pinout describes the function of each individual pin, and its role in the device's operation.
Pin # Pin Name Function Description 1 VSS Ground pin. Connect to the ground plane of the system. 2 VDD Power supply pin. Connect to the system power supply (typically 3.3V). 3 RXD0 Receive data bit 0 from the Ethernet network (data input). 4 RXD1 Receive data bit 1 from the Ethernet network (data input). 5 RXD2 Receive data bit 2 from the Ethernet network (data input). 6 RXD3 Receive data bit 3 from the Ethernet network (data input). 7 RXER Receive error. Indicates errors in the received Ethernet data frame. 8 RXDV Receive data valid. Indicates that valid data is being received. 9 TXD0 Transmit data bit 0 to the Ethernet network (data output). 10 TXD1 Transmit data bit 1 to the Ethernet network (data output). 11 TXD2 Transmit data bit 2 to the Ethernet network (data output). 12 TXD3 Transmit data bit 3 to the Ethernet network (data output). 13 TXER Transmit error. Indicates errors in the transmitted Ethernet data frame. 14 TXEN Transmit enable. Used to indicate when data is being transmitted. 15 MDC Management Data Clock . Used to clock in and out management data. 16 MDIO Management Data Input/Output. Used for reading and writing to the PHY's registers. 17 REFCLK+ Reference clock positive (typically 25 MHz). Used for synchronization. 18 REFCLK- Reference clock negative (typically 25 MHz). Used for synchronization. 19 TXCLK Transmit clock. Clock for the transmission of data on the Ethernet network. 20 RXCLK Receive clock. Clock for receiving data from the Ethernet network. 21 LED1 LED indicator pin 1 (can be used for status indication). 22 LED2 LED indicator pin 2 (can be used for status indication). 23 LED3 LED indicator pin 3 (can be used for status indication). 24 LED4 LED indicator pin 4 (can be used for status indication). 25 GND Ground pin. Connect to the ground plane of the system. 26 VDD Power supply pin. Connect to the system power supply (typically 3.3V). 27 AVSS Analog ground pin. Connect to analog ground plane of the system. 28 AVDD Analog power supply pin. Connect to analog system power supply (typically 3.3V). 29 RST Reset pin. Used to reset the PHY when required. 30 CS Chip select for the SPI interface (if applicable). 31 SCK SPI clock pin (if applicable). Used for synchronous data transfer. 32 SDI SPI data input pin (if applicable). Used for receiving data from the host. 33 SDO SPI data output pin (if applicable). Used for transmitting data to the host. 34 RXD4 Receive data bit 4 from the Ethernet network (data input). 35 RXD5 Receive data bit 5 from the Ethernet network (data input). 36 RXD6 Receive data bit 6 from the Ethernet network (data input). 37 RXD7 Receive data bit 7 from the Ethernet network (data input). 38 CTL0 Control signal 0 for configuring PHY functions. 39 CTL1 Control signal 1 for configuring PHY functions. 40 CTL2 Control signal 2 for configuring PHY functions. 41 CTL3 Control signal 3 for configuring PHY functions. 42 C10 Capacitor for internal voltage regulation (if required). 43 C11 Capacitor for internal voltage regulation (if required). 44 C12 Capacitor for internal voltage regulation (if required). 45 P1 Power pin for internal circuitry. 46 P2 Power pin for internal circuitry. 47 TEST0 Test pin for internal debugging purposes (not usually used in normal operation). 48 TEST1 Test pin for internal debugging purposes (not usually used in normal operation).FAQ for LAN8742AI-CZ-TR:
Q: What is the maximum data transfer rate of LAN8742AI-CZ-TR? A: The LAN8742AI-CZ-TR supports 10/100/1000 Mbps Ethernet speeds. Q: What type of package is the LAN8742AI-CZ-TR available in? A: The LAN8742AI-CZ-TR is available in a 48-pin QFN package. Q: How can I interface with the LAN8742AI-CZ-TR? A: The LAN8742AI-CZ-TR supports both the MDIO/MDC management interface and optional SPI interface for configuration. Q: What is the voltage range for the LAN8742AI-CZ-TR? A: The LAN8742AI-CZ-TR operates at 3.3V, with a typical supply voltage range of 3.0V to 3.6V. Q: Can the LAN8742AI-CZ-TR be used in low-power applications? A: Yes, it features several low-power modes such as energy-efficient Ethernet (EEE). Q: How do I reset the LAN8742AI-CZ-TR? A: Reset the device by toggling the RST pin. Q: What is the role of the LED pins on LAN8742AI-CZ-TR? A: The LED pins (LED1, LED2, LED3, and LED4) can be used for status indication, such as link/activity status. Q: Can the LAN8742AI-CZ-TR be used for both 10Base-T and 100Base-TX applications? A: Yes, the device is compatible with both 10Base-T and 100Base-TX standards. Q: What is the operating temperature range of the LAN8742AI-CZ-TR? A: The operating temperature range is -40°C to +85°C.Q: What is the purpose of the REFCLK pins on the LAN8742AI-CZ-TR?
A: The REFCLK pins provide a 25 MHz reference clock for the device's operation.Q: How can I configure the LAN8742AI-CZ-TR's functionality?
A: Configuration can be done through the MDIO/MDC interface or the SPI interface.Q: What is the function of the TX and RX data pins?
A: The TXD pins are used for transmitting Ethernet data, while the RXD pins receive Ethernet data.Q: Does the LAN8742AI-CZ-TR support auto-negotiation?
A: Yes, it supports auto-negotiation for speed and duplex mode.Q: How is the LAN8742AI-CZ-TR powered?
A: It is powered by a 3.3V supply provided to the VDD pins.Q: What is the power consumption of the LAN8742AI-CZ-TR?
A: The typical power consumption is about 250mW when operating at 1000Mbps.Q: How does the LAN8742AI-CZ-TR handle errors?
A: Errors are indicated through the RXER and TXER pins.Q: Can I use the LAN8742AI-CZ-TR in an industrial Ethernet environment?
A: Yes, the device is designed for use in both consumer and industrial Ethernet applications.Q: What is the role of the TXEN pin?
A: The TXEN pin is used to enable the transmission of data.Q: Can the LAN8742AI-CZ-TR operate without an external clock?
A: No, it requires a reference clock for synchronization, typically provided through the REFCLK pins.Q: Does the LAN8742AI-CZ-TR support both half-duplex and full-duplex communication?
A: Yes, the LAN8742AI-CZ-TR supports both half-duplex and full-duplex modes for Ethernet communication.These explanations provide detailed information on the pinout and functionality of the LAN8742AI-CZ-TR Ethernet PHY, as well as a set of frequently asked questions to assist with its integration and use.
