Gigacom's VSL340A PHY updated version of VSL340 to support SATA3 and backward compatible with SATA 1 and 2. VSL340A is suitable for both Host and Device applications within a Serial ATA system. The VSL340A PHY operates to the Serial ATA specification using either a 10-bit or 20-bit interface to a Serial ATA Link Layer where the 8b10b encoding and decoding of the data is done. Recovered data is provided using SATA compliant D-word alignment. The VSL340A PHY provides a comprehensive feature set, a well-defined architecture that allows designers extensive flexibility for various applications, and a roadmap to future products.
The VSL340A PHY is comprised of a hardened GDSII Physical Medium Attachment (PMA) sublayer containing the SerDes, plus a soft Physical Coding Sublayer (PCS) Verilog module that is connected to the hard macro at the PMA interface. The PCS, when coupled with the hardened PMA SerDes macro, provides a Serial ATA PHY with compliant signals for the end customer. Since the VSL PHY family includes many test features and capabilities that are not part of the Serial ATA specification, additional pins from the PMA layer are also available.