Microchip VSC8574RT

The VSC8574RT is a radiation-tolerant, low-power, quad-port Gigabit Ethernet transceiver. It supports four dual-media copper/fiber ports with SGMII and QSGMII MAC interfaces. Recovered clock outputs and an integrated IEEE 1588 network timing and synchronization timing packet engine enable the VSC8574RT device to meet the demands of applications requiring highly precise timing without adding unnecessary complexity or increased cost to the design.

The VSC8574RT withstands harsh aerospace environments with enhanced radiation performance and high reliability in extreme temperatures and vacuums.

Key Features

• Low Power
  • Low power consumption of approximately 425 mW per port in 1000BASE-T mode, 200 mW per port in 100BASE-TX mode, 225 mW per port in 10BASE-T mode, and less than 115 mW per port in 100BASE-FX and 1000BASE-X modes
  • ActiPHY link down power savings
  • PerfectReach smart cable reach algorithm
  • IEEE 802.3az-2010 Energy Efficient Ethernet idle power savings
• Advanced Carrier Ethernet Support
  • Support for IEEE 1588-2008 timestamping with encapsulation support
  • Recovered clock outputs with programmable clock squelch control and fast link failure indication (< 1 ms; worst-case < 3 ms) for G.8261 Synchronous Ethernet applications
  • Ring resiliency for maintaining linkup integrity when switching between 1000BASE-T master and slave timing
  • Supports IEEE 802.3bf timing and synchronization standard
  • Integrated quad two-wire serial mux to control Small Form-factor Pluggable (SFP) and Power over Ethernet (PoE) modules
  • Support for IEEE 802.3ah unidirectional transport for 100BASE-FX and 1000BASE-X fiber media
• Wide Range of Support
  • Compliant with IEEE 802.3 (10BASE-T, 100BASE-TX, 1000BASE-T, 100BASE-FX, and 1000BASE-X) specifications
  • Support for > 16 kB jumbo frames in all speeds with programmable synchronization FIFOs
  • Supports Cisco® QSGMII v1.3, Cisco SGMII v1.9, 1000BASE-X MACs, IEEE 1149.1 JTAG boundary scan, and IEEE 1149.6 AC-JTAG
• Flexibility
  • VeriPHY™ cable diagnostics suite provides extensive network cable information such as cable length, termination status and open/short fault location
  • Patented, low-EMI line driver with integrated line-side termination resistors
  • Four programmable direct-drive LEDs per port with adjustable brightness levels using register controls; bi-color LED support using two LED pins
  • Serial LED interface option
  • Extensive test features including near-end, far-end, copper media connector, SerDes MAC/media loopback and Ethernet packet generator with CRC error counter to decrease time to market