2.5G Ethernet PHY (4 port), USXGMII-M
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Information 2.5G Ethernet PHY (4 port), USXGMII-M
Ethernet Bandwidth (Mbps) 10, 100, 1000, 2500
Interfaces SGMII+, USXGMII-M
1588v2 Yes
SyncE No
Thermal Sensor Yes
Min Temp (°C) 0
Max Temp (°C) 70
Package BGA-236
X x Y Package Dimension (mm) 12 x 12
Software Type PHY Driver
Software Location Upstreamed: /drivers/net/phy/mxl-gpy.c
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GPY241 is a quad-port 2.5Gbit/s Ethernet PHY with PTP (IEEE1588v2) support suited for routers, switches, and home gateways.


The device supports the 2.5GBASE-T, 1000BASE-T, 100BASE-TX and 10BASE-Te modes of the IEEE802.3 standard and provides great interoperability for high data rate connections as well as for connections to legacy 1000BASE-T, 100BASE-TX and 10BASE-T devices.


GPY241 can be connected to a switch or gateway MAC interface by either a single four pin 10G USXGMII-4×2.5G interface or four SGMII+ interfaces.

The SGMII+/SGMII and USXGMII interfaces support 10M, 100M, 1G and 2.5Gbit/s rates or a fixed rate of 2.5Gbit/s with IEEE802.3x rate adaptation using pause frames.

GPY241 has a typical power consumption of 1W per port in 2.5GBASE-T mode. For reduced power consumption during periods of low traffic, Energy Efficient Ethernet (EEE) is supported for 2.5GBASE-T, 1000BASE-T and 100BASE-TX. Additional power saving can be achieved by using the Wake-on-LAN (WoL) functionality.


For Industrial, transportation and mobile networking applications requiring time synchronization, GPY241 supports timestamp insertion and retrieval according to the IEEE 1588v2 standard.


GPY241 is packaged in a small 12 x 12mm FC-BGA-256, ideal for 4-layer PCBs. The low EMI line driver with integrated termination simplifies the PCB design. The device requires 2 power supply rails when using SGMII+ as the MAC interface and 3 power supply rails (3.3V, 1.8V and core) when using USXGMII. It is configurable through pin strapping, MDIO interface, or an optional external flash memory.

  • Support of IEEE802.3 2.5GBASE-T and 1000BASE-T full-duplex and 100BASE-TX and 10BASE-Te full and half-duplex modes
  • Commercial temperature range (0°C to 70°C)
  • MAC interface: Four channel SGMII+/SGMII or single channel USXGMII-4×2.5G. SGMII+ is a Serial-GMII (SGMII) interface clocked with 3.125Gbaud/s to support a data rate of 2.5Gbit/s
  • Rate adaptation for SGMII+/SGMII and USXGMII using IEEE802.3x flow control
  • Preamble alignment: Shortened 7 byte preamble received over SGMII+/SGMII is restored to 8 byte
  • Two power rails for use with SGMII+ (3.3V and core) and three power rails for use with USXGMII (3.3V, 1.8V and core)
  • FC-BGA-256 package (12 x 12mm)
  • Typical power consumption of 1W per port in 2.5GBASE-T mode
  • Precise time stamping support according to IEEE1588 Version 2
  • Control of up to 12 LEDs with smart LED brightness control for link status display
  • Smart-AZ feature, which supports Energy Efficient Ethernet (EEE, IEEE802.3az) with MACs that do not support EEE
  • Field firmware upgrade capability with external optional flash memory
  • Programmable temperature sensor to monitor the device temperature for system warning and down speed
  • Support of Jumbo frames of up to 10kB
  • Cable diagnostics
  • Auto down speed for Cat3 (four wires) or bad cable
  • Auto MDI/MDI-X and auto polarity correction
  • Wake-on-LAN

  • Broadband router: xPON, wireless, 4G/5G, G.Fast,, cable, xDSL
  • Home gateway: wireless gateway, home server, home storage (NAS)
  • High port and low port count 2.5GbE switch
  • Dual-band dual-concurrent 802.11ac/ax enterprise access point

Documentation & Design Tools

Type Title Version Date File Size
Product Flyers GPY24x 2.5G Ethernet PHYs Flyer 01 November 2022 927.3 KB
Product Brochures Ethernet Brochure 002 December 2023 4.1 MB
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Parts & Purchasing

Part Number Product ID (MMID) Pkg Code Packaging Type Min Temp Max Temp Notes Status Suggested Replacement Buy Now PDN
GPY241A1BC 999X55 BGA-236 Tape & Reel 0 70 FW0x8959 OBS
GPY241B0BC 999X65 BGA-236 Tape & Reel 0 70 FW0x8B83 Active
GPY245-EVK-1 Board GPY245 – 2.5G PHY SGMII Loopback Reference Board (4-port) Active
GPY245-EVK-2 Board GPY245 – 2.5G PHY USXGMII Loopback Reference Board (4-port) Active
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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.


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Distribution Date Description File
10/01/2022 Product Discontinuation Notice