AT78C5091

www.DataSheet4U.com Features 1.5 Gbps Bi-directional Transceiver – Compliant with Serial ATA Gen1 Revision 1.0a Specification Low Power Operation – 75 mW per Channel Nominal Key Blocks Include – Integrated OOB Processor – K28.5 COMMA Detection – Digital Clock and Data Recovery (CDR) with Digital Equalization – Spread Spectrum Clocking – Optional 8B/10B Encoder and Decoder Parallel I/O – Synchronous 8-bit/10-bit Parallel Interface @ 150 MHz Serial I/0 – Programmable Pre-emphasis – Support for Spread Spectrum Clocking – Integrated 100Ω Matched Differential Termination – AC and DC Coupling Support Test Features – Far-end and Near-end Loopback Support – At Speed BIST 1-channel Serial ATA PHY AT78C5091 Summary Overview The AT78C5091 is a 1-channel SATA PHY supporting Gen 1 speeds of 1.5 Gbps. The IP has been designed based on the requirements stated in the Serial ATA Standard, Rev 1.0a, Jan 2003. On the transmit path, parallel data is registered, passed through a transmit FIFO to compensate for phase differences between the link and PHY clocks, 8B/10B encoded and then passed out via a high speed serializer using a spread spectrum clock. Builtin flexibility permits bypassing the encoding block in addition to optionally disabling the spread spectrum clocking. The user can control the transmit buffer output swing and pre-emphasis levels via direct input signals. On the receive path, the AT78C5091 performs the serial-to-parallel conversion, using a high bandwidth cloc...