High Performance Serial Backplane Transceiver The VSC870TX is a high-performance Ethernet switch chip manufactured by Vitesse Semiconductor. Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Vitesse Semiconductor
- **Model:** VSC870TX
- **Type:** Ethernet Switch Chip
- **Port Configuration:** 8-port 10/100 Mbps Fast Ethernet switch
- **Data Rate:** 10 Mbps (Ethernet) / 100 Mbps (Fast Ethernet)
- **Interface:** MII (Media Independent Interface)
- **MAC Address Table Size:** Up to 1K entries
- **Packet Buffer Memory:** Integrated on-chip buffer
- **VLAN Support:** Yes (IEEE 802.1Q)
- **QoS Support:** Yes (IEEE 802.1p priority tagging)
- **Flow Control:** IEEE 802.3x flow control (full-duplex), backpressure (half-duplex)
- **Jumbo Frame Support:** No
- **Power Supply:** 3.3V operation
- **Package Type:** 128-pin PQFP (Plastic Quad Flat Package)
### **Descriptions:**
The VSC870TX is an 8-port Fast Ethernet switch chip designed for embedded networking applications. It provides non-blocking wire-speed switching for 10/100 Mbps Ethernet networks. The chip integrates MAC (Media Access Control) functions, address lookup, and packet buffering, reducing the need for external components. It supports VLAN tagging and QoS prioritization, making it suitable for managed switch applications.
### **Features:**
- **8-Port Fast Ethernet Switch:** Supports 10BASE-T and 100BASE-TX operation.
- **Auto-Negotiation:** Per-port auto-negotiation for speed and duplex mode.
- **Auto-MDIX:** Automatic crossover detection (eliminates need for crossover cables).
- **Store-and-Forward Switching:** Ensures error-free packet forwarding.
- **Full/Half-Duplex Operation:** Supports both modes per port.
- **Spanning Tree Protocol (STP):** Optional support for loop prevention.
- **LED Indicators:** Supports link/activity and speed status LEDs.
- **Low Power Consumption:** Optimized for energy efficiency.
- **Industrial Temperature Range:** Available in extended temperature variants.
This information is strictly based on the technical specifications and features of the VSC870TX as provided in Ic-phoenix technical data files.
