1G Ethernet PHY, SGMII, MACSEC, Industrial Temp


Information 1G Ethernet PHY, SGMII, MACSEC, Industrial Temp
Package QFN-56
X x Y Package Dimension (mm) 7 x 7
Interfaces SGMII
Min Temp -40
Max Temp 85
Supply Voltage (V)
Ethernet Bandwidth (Mbps) 10, 100, 1000
Interface Ports
Power Source Single 3.3V; DCDC 3.3V => 1V
1588v2 Yes
Syn-E Yes
IEEE802.3az, EEE Yes
Thermal Sensor Yes
Ethernet Ports
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GPY115 is a single port 1Gbit/s Ethernet PHY for the industrial temperature range with PTP (IEEE1588v2), MACsec and Synchronous Ethernet (SyncE) support.


The device supports the 1000BASE-T, 100BASE-TX and 10BASE-Te modes of the IEEE802.3 standard.


GPY115 is connected to the MAC of an SoC or switch with a low pin-count SGMII interface. The SGMII interface supports 10M, 100M and 1Gbit/s rates or IEEE802.3x rate adaptation using pause frames.


GPY115 supports Energy-Efficient Ethernet (EEE) in the 1000BASE-T and 100BASE-TX modes to reduce power consumption during periods of low traffic. Additional power saving can be achieved by using the Wake-on-LAN (WoL) functionality and the ultra-low power mode.


GPY115 supports MACsec (IEEE 802.1AE) point-to-point wire speed encryption and decryption for MAC layer data security, Synchronous Ethernet (SyncE) and the Precision Time Protocol (PTP, 1588v2). 


The device is packaged in a small 7 x 7mm single-row VQFN-56 package, ideal for 2 or 4-layer PCBs. A low EMI line driver with integrated termination simplifies the PCB design. GPY115 can be operated from a single 3.3V power supply using the integrated DC/DC switching regulator. It is configurable through pin strapping, MDIO interface, or an optional external flash memory.


GPY115 is pin compatible with MaxLinear’s GPY211, GPY212 and GPY215 2.5G Ethernet PHYs.

  • Support of IEEE802.3 1000BASE-T full-duplex and 100BASE-TX and 10BASE-Te full and half-duplex modes
  • Industrial temperature range (-40°C to +85°C)
  • SGMII interface for MAC connection
  • Rate adaptation over SGMII using IEEE802.3x flow control
  • Single power supply of 3.3V using the integrated DC/DC switching regulator or 2 voltage rails without using the internal DC/DC
  • Single-row VQFN-56 package (7 x 7mm)
  • Control of up to 4 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 wire) cables or bad cables
  • Auto MDI/MDI-X and auto polarity correction
  • Wake-on-LAN
  • Ultra-low power mode with automatic wake-up and power consumption below 10mW, when the cable is unplugged (supported with internal DCDC only)
  • Precise time stamping support according to IEEE 1588 Version 2
  • MACsec wire-speed data encryption and decryption with 16 security channels and 32 MACsec associations
  • Synchronous Ethernet (SyncE) support according to ITU-T G.8262

  • 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 1GbE switch
  • Dual-band dual-concurrent 802.11ac/ax enterprise access point

Documentation & Design Tools

Type Title Version Date File Size
Product Flyers GPY21x and GPY115 Ethernet PHYs Flyer 00 October 2020 983.3 KB
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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
GPY115B1VI 999N9H VQFN-56 Tray -40 85 FW0x8747 NRND
GPY115C0VI 99AFCA VQFN-56 Tray -40 85 FW0x886F 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.


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