The KSZ8862M is 2-port switch with fiber support, available in 8-/16-bit and 32-bit bus designs.

The KSZ8862M is an industry first, fully managed, 2-port switch. It is based on a proven, 4th generation, integrated Layer-2 switch, compliant with IEEE 802.3u standards.For industrial applications, the KSZ8862M can run in half-duplex mode regardless of the application. In fiber mode, port 1 can be configurable to either 100BASE-FX or 100BASE-SX/10BASE-FL. The LED driver and post amplifier are also included for 10Base-FL and 100Base-SX applications.In copper mode, port 2 supports 10/100BASE-T/TX with HP Auto MDI/MDI-X for reliable detection of and correction for straight-through and crossover cables.

Microchip's proprietary LinkMD® Time Domain Reflectometry (TDR) based function is also available for determining the cable length, as well as cable diagnostics for identifying faulty cabling.The KSZ8862M offers an extensive feature set that includes tag/port-based VLAN, quality of service (QoS) priority management, management information base (MIB) counters, and CPU control/data interfaces to effectively address Fast Ethernet applications.

The KSZ8862M contains:
- Two 10/100 transceivers with patented, mixed-signal, low-power technology
- Two media access control (MAC) units
- Direct memory access (DMA) channel
- High-speed, non-blocking, switch fabric
- Dedicated 1K entry forwarding table
- On-chip frame buffer memory

When using the provided KSZ8462 software driver, please exclude the 1588 PTP code at compile time.

Microchip's complimentary and confidential LANCheck® online design review service is available for customers who have selected our products for their application design-in. The  is subject to Microchip's  and requires a myMicrochip account.

Switch Management

  Non-blocking switch fabric assures fast packet delivery by utilizing a 1K entry forwarding table and a store-and-forward architecture

  Fully compliant with IEEE 802.3u standards

  Full-duplex IEEE 802.3x flow control (Pause) with force mode option

  Half-duplex back pressure flow control

Advanced Switch Management

  IEEE 802.1Q VLAN support for up to 16 groups (full range of VLAN IDs)

  VLAN ID tag/untag options, on a per port basis

  IEEE 802.1p/Q tag insertion or removal on a per port basis (egress)

  Programmable rate limiting at the ingress and egress ports

  Broadcast storm protection

  IEEE 802.1d spanning tree protocol support

  MAC filtering function to filter or forward unknown unicast packets

  Direct forwarding mode enabling the processor to identify the ingress port and to specify the egress port

  Internet Group Management Protocol (IGMP) v1/v2 snooping support for multicast packet filtering

  IPV6 Multicast Listener Discovery (MLD) snooping support

Fiber Support

  Integrated LED driver and post amplifier for 10BASE-FL and 100BASE-SX optical modules

  100BASE-FX/SX and 10BASE-FL fiber support on port 1

Monitoring

  Port mirroring/monitoring/sniffing: ingress and/or egress traffic to any port

  MIB counters for fully compliant statistics gathering - 34 MIB counters per port

  Loopback modes for remote failure diagnostics

Comprehensive Register Access

  Control registers configurable on-the-fly (port-priority, 802.1p/d/Q)

QoS/CoS Packets Prioritization Support

  Per port, 802.1p and DiffServ-based

  Remapping of 802.1p priority field on a per port basis

Power Modes, Packaging, and Power Supplies

  Full-chip hardware power-down (register configuration not saved) allows low power dissipation

  Per port-based, software power-save on PHY (idle link detection, register configuration preserved)

  Single power supply: 3.3V

  Commercial Temperature Range: 0°C to +70°C

  Industrial Temperature Range: –40°C to +85°C

  (see Ordering Information).

  Available in 128-pin PQFP

  Available in -16 version for 8/16-bit bus support and -32 version for 32-bit bus support (see Ordering Information).