1G Switch, 4 port, 2 PHYs, RGMII & SGMII
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Information 4-port 1G Ethernet Switch
Ethernet Bandwidth (Mbps) 10, 100, 1000
Ethernet Ports 2
Interface Ports 2
Interfaces RMII, RGMII, SGMII+
Supply Voltage (V) 3.3
Min Temp (°C) 0
Max Temp (°C) 70
Package MRQFN-105, LGA-105
X x Y Package Dimension (mm) 8 x 8
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The GSW120 is a highly integrated, low-power, non-blocking four-port Gigabit Ethernet QoS Switch with two Ethernet PHY, one 1G/2.5G SGMII+ and one management port. The GSW120 complies with 10BASE-TE, 100BASE-TX and 1000BASE-T standards. Support of Energy-Efficient Ethernet 802.3az reduces power consumption further in idle state. Smart LED brightness control logic is integrated for additional power saving. LED brightness can be adjusted either by an external push button or varies dynamically depending on the intensity of the light with an external light sensor.
The GSW120 devices are configurable via pin-strapping, by means of the MDIO interface, UART interface, SPI interface or optionally by connecting an external EEPROM. Integrated QoS technology prioritizes switch traffic for different classes of applications e.g. VoIP, video, audio and data based on port ID, 802.1p, IP DSCP/ToS and multiple fields of the packet. IEEE 1588v2 support enables highly accurate precision timing protocol applications. The 1M Bits embedded packet storage SRAM is integrated with 9 KB jumbo frame support.
The GSW120 features 4K entry VLAN table for 802.1Q VLAN operation and double VLAN tagging (Q-in-Q) translation. The GSW120 supports
IGMPv1/v2/v3 and MLD v1/v2 snooping for efficient use of network bandwidth.

  • Four integrated PHY
    • 10BASE-TE, 100BASE-TX and 1000BASE-T
    • 802.3az Energy Efficient Ethernet
    • Low EMI line driver with integrated line termination
  • Single RGMII interface with delay compensation
  • QoS support with up to 16 traffic classes based on port, 802.1P, IP DSCP/ToS and multiple fields
  • 4K 802.1Q VLAN and VLAN Q-in-Q insertion, removal and translation
  • Hardware IGMP V1/2/3 and MLD V1/2 snooping
  • Broadcast storm control and ingress bandwidth control
  • Egress rate shaping and WFQ-Strict priority combined scheduling

  • Set-top Box
  • Router
  • Gateway
  • Power line Adapter

Documentation & Design Tools

Type Title Version Date File Size
Data Sheets GSW120 1G Switch, 4 port, 2 PHYs, RGMII & SGMII Data Sheet 1.8 January 2023 11.9 MB
Product Flyers GSW1xx Gigabit Ethernet Switches Flyer 00 November 2020 1.2 MB
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Parts & Purchasing

Part Number Product ID (MMID) Pkg Code Packaging Type Min Temp Max Temp Notes Status Buy Now
GSW120A3LC 910008 LGA-105 Tray 0 70 Active
GSW120A3MC 963962 MRQFN-105 Tray 0 70 Active
GSW145-EVK-1 Kit 6-port 4-PHY 1G Ethernet Switch Evaluation Kit Active

Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.