seekconnector.com

RTL8111H-CG Detai LED explanation of pin function specifications and circuit principle instructions

The RTL8111H-CG is a network interface card (NIC) chip made by Realtek Semiconductor. It is commonly used for Ethernet connectivity and supports Gigabit speeds. The chip is designed for use in various applications, including personal computers, motherboards, servers, and embedded systems.

Here is a detai LED explanation of the requested specifications:

1. Brand and Model:

Brand: Realtek Semiconductor Model: RTL8111H-CG

2. Package Type:

The RTL8111H-CG is typically offered in a LQFP (Low-Profile Quad Flat Package) form factor. The LQFP package is available with 48 pins in this case. It is widely used for integrated circuits requiring a medium-to-large number of connections while maintaining a compact size.

3. Pin Function Specifications:

Below is the detailed pinout of the RTL8111H-CG chip. It includes the functions of all the pins in a tabular format. Since the RTL8111H-CG has 48 pins, all 48 pins will be described. I will break them down into categories for clarity.

Pin Function Table:

Pin Number Pin Name Pin Function Description 1 VDD33 3.3V Power Supply 2 VSS Ground 3 TXD0 Transmit Data (Channel 0) 4 TXD1 Transmit Data (Channel 1) 5 TX_EN Transmit Enable 6 RXD0 Receive Data (Channel 0) 7 RXD1 Receive Data (Channel 1) 8 RX_ER Receive Error 9 CRSDV Carrier Sense / Data Valid 10 MDC Management Data Clock 11 MDIO Management Data Input/Output 12 RESET Reset Pin 13 GND Ground 14 TX_CLK Transmit Clock 15 RX_CLK Receive Clock 16 LINK Link Status 17 INT# Interrupt Pin 18 RST Reset Pin 19 WOL Wake On LAN 20 MII_MODE MII Interface Mode 21 SMI Serial Management Interface 22 VDD Power Supply 23 GND Ground 24 VSS Ground 25 VDDA Analog Power Supply 26 VDDIO Digital I/O Power Supply 27 CLKREQ# Clock Request 28 RXD3 Receive Data (Channel 3) 29 RXD2 Receive Data (Channel 2) 30 TXD3 Transmit Data (Channel 3) 31 TXD2 Transmit Data (Channel 2) 32 CBLID Cable ID Pin 33 DSEL Data Select 34 TX_ER Transmit Error 35 LED1 LED Indicator 1 36 LED2 LED Indicator 2 37 PHY_PWR PHY Power Control 38 TEST_MODE Test Mode 39 PWRDN# Power Down 40 RXT_ERR Receiver Error 41 GP1 General Purpose I/O Pin 1 42 GP2 General Purpose I/O Pin 2 43 GP3 General Purpose I/O Pin 3 44 GP4 General Purpose I/O Pin 4 45 GP5 General Purpose I/O Pin 5 46 GP6 General Purpose I/O Pin 6 47 GP7 General Purpose I/O Pin 7 48 VSS Ground

Circuit Principle and Usage:

Power Supply: The chip requires 3.3V (VDD33) power supply on pins 1, 22, and VDDA (pin 25) for the analog section. The GND pins (2, 13, 23, 24, and 38) are connected to the ground. Data Transmission and Reception: Pins TXD0, TXD1, RXD0, RXD1, TXEN, RXER, and CRSDV are essential for the transmission and reception of data. The TXD and RXD pins are responsible for sending and receiving Ethernet frames, while TXEN and RXER are used to enable transmission and handle reception errors. Clocking: The CLKREQ# and clock pins (TXCLK, RXCLK) are used for the synchronization of the data transfer process. Interrupt and Status: The INT# pin generates interrupt signals for notifying the system of important events like a packet arrival. Management Interface: The MDC and MDIO pins are used for communication with external management components, such as the PHY controller, for network management tasks.

Common FAQ for RTL8111H-CG:

Q1: What is the function of the TXD0 and TXD1 pins on the RTL8111H-CG? A1: The TXD0 and TXD1 pins are responsible for transmitting data on the network. TXD0 is the primary data channel, and TXD1 is used for additional data transmission. Q2: What does the RESET pin do on the RTL8111H-CG? A2: The RESET pin is used to reset the entire chip, clearing any errors and returning it to a known state. Q3: What is the role of the RXD0 and RXD1 pins? A3: RXD0 and RXD1 are responsible for receiving data from the network. RXD0 is the primary data channel, and RXD1 is used for additional data reception. Q4: Can the RTL8111H-CG work without the MII interface? A4: Yes, the RTL8111H-CG can work in RGMII or SGMII modes as well, which are other Ethernet interface types, apart from MII. Q5: How does the WOL (Wake On LAN) function work on the RTL8111H-CG? A5: The WOL feature allows the system to wake up from a low-power state when a network packet is received, typically a magic packet. Q6: What is the purpose of the MDIO pin on the RTL8111H-CG? A6: The MDIO pin is used for managing and controlling the physical layer (PHY) chip using the Management Data Input/Output interface. Q7: What type of power supply is required for the RTL8111H-CG? A7: The chip requires a 3.3V power supply for operation, and it also needs an analog power supply (VDDA) for the PHY layer. Q8: What is the function of the CBLID pin? A8: The CBLID pin identifies the type of Ethernet cable connected (e.g., straight-through or crossover). Q9: What is the TX_ER pin used for on the RTL8111H-CG? A9: TX_ER is used to indicate an error in the transmission of data, often used for debugging or error detection. Q10: Can I use the RTL8111H-CG for Gigabit Ethernet connections? A10: Yes, the RTL8111H-CG supports Gigabit Ethernet, with speeds up to 1000 Mbps.

This concludes the detailed description and pin function table for the RTL8111H-CG model. Should you need further clarification on any pin or have additional questions, feel free to ask!