VSC7170

2:1 Active-Active Multiplexer, Serial ATA 1:2 Port Multiplier, and Serial ATA 2:1 Port Selector

Low-Cost SATA Multiplexer/Buffer

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Part Details

  • Three Independent SATA Channels
  • Auto Negotiation of the Data Transfer Rate of 1.5Gbps or 3.0Gbps for Each Channel
  • Supports Port Multiplier Configuration of One Host to Two Devices, and Port Selector Configuration of Two Hosts to One Drive
  • Conforms to Serial ATA II Port Multiplier Specification Revision 1.1
  • Conforms to Serial ATA II Port Selector Specification Revision 1.0
  • Conforms to Serial ATA II PHY Electrical Specification Revision 1.0 (1i, 1x, 2i, 2x)
  • Supports Both Command and FIS-Based Switching When in Port Multiplier Mode
  • No External Flash Memory Required
  • Four Levels of Output Preemphasis, Input Line Equalization, and Analog LOS Thresholds (Configurable by Pin)
  • Two Levels of Output Swing Amplitude (Configurable by Pin)
  • Supports SATA Asynchronous Signal Recovery
  • Supports Spread-Spectrum Clocking
  • Built-In Self Test (BIST) with Diagnostic Loopback
  • Active-Active Circuitry Allows Multiple Initators in Port Selector Mode
  • Optional Retimer Mode
  • Port Multiplier Control Port State Machine
  • Staggered Drive Spin-Up in Port Multiplier Mode
  • Single 3.3V Power Supply, 1.5W Typical Power
VSC7170
2:1 Active-Active Multiplexer, Serial ATA 1:2 Port Multiplier, and Serial ATA 2:1 Port Selector
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