100/10Mbps Ethernet Controller The W89C840AF is a network interface controller (NIC) manufactured by Winbond. Below are the key specifications, descriptions, and features based on the available knowledge:
### **Specifications:**
1. **Manufacturer:** Winbond
2. **Part Number:** W89C840AF
3. **Type:** Fast Ethernet Controller
4. **Interface:** PCI (Peripheral Component Interconnect)
5. **Data Rate:** Supports 10/100 Mbps auto-negotiation
6. **Compliance:** IEEE 802.3u (Fast Ethernet)
7. **Bus Type:** 32-bit PCI v2.2 compliant
8. **MAC (Media Access Control):** Integrated
9. **PHY (Physical Layer):** Integrated
10. **Operating Voltage:** 3.3V with 5V tolerance
### **Descriptions:**
- The W89C840AF is a single-chip Fast Ethernet controller designed for PCI-based systems.
- It integrates both MAC and PHY functions, reducing the need for external components.
- Supports full-duplex and half-duplex operations with auto-negotiation for speed and duplex mode.
- Suitable for desktop, workstation, and embedded networking applications.
### **Features:**
1. **Auto-Negotiation:** Automatically detects and selects the best speed (10/100 Mbps) and duplex mode.
2. **Wake-on-LAN (WoL):** Supports remote wake-up functionality.
3. **Advanced Power Management:** Supports ACPI (Advanced Configuration and Power Interface) for energy efficiency.
4. **PCI Bus Master DMA:** Enhances data transfer efficiency.
5. **EEPROM Support:** Allows configuration settings to be stored externally.
6. **LED Indicators:** Provides link/activity and speed status via LED outputs.
7. **Driver Support:** Compatible with major operating systems (Windows, Linux, etc.).
This information is strictly based on the manufacturer's specifications and technical documentation.
