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KSZ8993MI from MICREL

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KSZ8993MI

Manufacturer: MICREL, KENDIN

Integrated 3-Port 10/100 Managed Switch with PHYs

Partnumber Manufacturer Quantity Availability
KSZ8993MI MICREL, KENDIN 224 In Stock

Description and Introduction

Integrated 3-Port 10/100 Managed Switch with PHYs The KSZ8993MI is a highly integrated, low-power, 5-port switch controller manufactured by KENDIN (now part of Microchip Technology). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Ports:** 5-port 10/100 Fast Ethernet switch  
- **Interface:** MII (Media Independent Interface) for uplink port  
- **MAC Addresses:** Supports 1K MAC addresses  
- **Packet Buffer:** 64 KB shared packet buffer  
- **Power Supply:** 3.3V operation  
- **Power Consumption:** Low power consumption (typically 400 mW)  
- **Operating Temperature:** Commercial (0°C to 70°C) and Industrial (-40°C to 85°C) options  
- **Package:** 128-pin PQFP (Plastic Quad Flat Pack)  

### **Descriptions:**
- The KSZ8993MI is a non-blocking, store-and-forward switch with auto-negotiation support for each port.  
- It includes an integrated PHY for four 10/100BASE-TX ports and an MII interface for an external PHY or uplink connection.  
- Supports IEEE 802.3x full-duplex flow control and backpressure half-duplex flow control.  
- Features auto-MDIX (Medium Dependent Interface Crossover) for simplified cabling.  

### **Features:**
- **Auto-Negotiation:** Per-port auto-negotiation for speed (10/100 Mbps) and duplex mode.  
- **VLAN Support:** Basic VLAN tagging and filtering.  
- **QoS (Quality of Service):** Supports 802.1p priority queuing with two priority levels.  
- **Loop Detection:** Automatic loop detection and prevention.  
- **LED Indicators:** Supports per-port link/activity and speed status LEDs.  
- **Jumbo Frame Support:** Handles frames up to 2 KB in size.  
- **Management:** Optional MII management interface for external control.  

This device is commonly used in embedded networking applications, including industrial control, VoIP, and small office/home office (SOHO) networking equipment.

Application Scenarios & Design Considerations

Integrated 3-Port 10/100 Managed Switch with PHYs

Alternative Part Number

  • KSZ8895MQX --: Microchip (which acquired Micrel) 5-port managed switch in the same KSZ series family, similar integrated Ethernet switch functionality and pin-compatible package options, making it a strong drop-in candidate.
  • KSZ8863MLL --: 3-port managed Ethernet switch from the same Micrel/Microchip KSZ switch family with comparable MAC/PHY integration and register-level compatibility for many designs.
  • RTL8305SB --: 5-port 10/100 Ethernet switch IC from a different vendor and naming series, offering similar unmanaged/managed switch functionality as a cross-vendor alternative.
  • KSZ8993M --: Same KSZ8993 family Ethernet switch in a different package variant, widely available and functionally equivalent for most designs.
  • KSZ8995MA --: Closely related Micron/Microchip 5-port managed switch with similar feature set and interface, suitable as a functional substitute.
  • RTL8309N --: Comparable 8-port 10/100 Ethernet switch controller offering similar integration and connectivity for board-level replacement.

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