SPNZ801113

Controllers Overview

The SPNZ801113 is a Layer 2 managed switch integrating four 10/100Mbps Ethernet ports with two MAC MII or RMII interfaces. It features a non-blocking shared memory switch fabric with 1.4Gbps bandwidth and 64Kbyte on-chip frame buffer memory. The device supports up to 128 VLAN groups, IEEE 802.1p/q tagging, and IGMP v1/v2 snooping. Configuration is accessible via SPI (up to 25MHz), I2C, or SMI (MDC/MDIO). Operating voltages include 3.3V analog, 1.8V-3.3V I/O, and 1.2V core. It is available in a 64-pin QFN package for commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges.

Controllers Feature Summary

• Integrated Layer 2 switching with dual MII/RMII uplink interfaces
• Supports IEEE 802.1q VLAN, 802.1p/q tagging, and IGMP snooping
• Configurable via high-speed SPI, I2C, or standard SMI management interfaces
• Low-power design with energy-detect mode and dynamic clock shutdown

Controllers Applications

• VoIP Phone systems
• Set-top boxes and Game Boxes
• Industrial Control networks
• IPTV Point of Presence (POF)
• SOHO Residential Gateways

Controllers Procurement Notes

Verify the specific ordering suffix to confirm the operating temperature range. The 'Z' suffix indicates the commercial grade (0°C to +70°C), while the 'Y' suffix denotes the industrial grade (-40°C to +85°C). Ensure the selected variant matches the thermal requirements of the target deployment environment before finalizing procurement.

Controllers Selection Notes

Select this component for cost-sensitive embedded systems requiring integrated PHY and switch functionality. Verify that the host processor can interface with the available MII or RMII ports if used as an uplink. Confirm voltage compatibility for the 3.3V analog supply and the selectable 1.8V to 3.3V I/O domain during system architecture planning.

Controllers Part Context

Originally manufactured by Micrel, Inc., this component was acquired by Microchip Technology. The datasheet retains Micrel branding and part numbering conventions. It belongs to a family of highly integrated Ethernet switches designed to reduce system bill-of-materials by combining PHY, MAC, and switching logic into a single small-footprint package.

Controllers Replacement Considerations

The SPNY801113 serves as the industrial-grade equivalent to the commercial SPNZ801113. Both share identical pinouts and functional specifications but differ in their certified operating temperature ranges. No other cross-model substitutes are documented in the official source material.