The (Vita57.1) compliant HTG-4RJ45 FMC module provides access to four RJ45 connectors through Marvel Alaska® Quad family of single-chip device (88E1240-A0-BAM1C000) with four independent Gigabit Ethernet transceivers. Each transceiver performs all the physical layer functions for 100BASE-TX and 1000BASE-T full or half-duplex Ethernet on CAT 5 twisted pair cable, and 10BASET full or half-duplex Ethernet on CAT 3, 4, and 5 cable.
The Alaska 88E1240 device supports the Serial Gigabit Media Independent Interface (SGMII) for direct connection to a MAC/Switch port. The 88E1240 device is fully compliant with the IEEE 802.3 standard. The 88E1240 device includes the PMD, PMA, and PCS sub layers. The 88E1240 device performs PAM5, 8B/10B, 4B/5B, MLT-3, NRZI, and Manchester encoding/decoding, digital clock/data recovery, stream cipher scrambling/ descrambling, digital adaptive equalization for the receiver data path as well as digital filtering for pulse-shaping for the line transmitter, and Auto-Negotiation and management functions. The 88E1240 device supports Auto-MDI/MDIX at all three speeds to enable easier installation.
The 88E1240 device uses advanced mixed-signal processing to perform equalization, echo and crosstalk cancellation, data recovery, and error correction at a gigabit per second data rate. The 88E1240 device is supported with an integrated Advanced Virtual Cable Tester® (VCT™) enabling fault detection and advanced cable performance monitoring.