General Description

The VSC7186 is a Quad Gigabit Ethernet Transceiver IC. Each of the four transmitters has a 10-bit wide bus, running at 125 MHz, which accepts 8b/10b encoded transmit characters and serializes the data onto high speed differential outputs at rates between 1.05 and 1.36 Gb/s. The transmit data must be synchronous to the reference clock. Each receiver samples serial receive data, recovers the clock and data, deserializes it into 10-bit receive characters, outputs a recovered clock and detects “Comma” characters. The VSC7186 contains on-chip PLL circuitry for synthesis of the baud-rate transmit clock and extraction of the clocks from the received serial streams.

Features

? Four Complete Transceiver Functions in One IC

? Full Gigabit Ethernet (IEEE 802.3z) Compliance

? Pin-Compatible With Agilent HDMP-1686A

? 5-Volt Tolerant TTL Inputs

? Uses Reference Clock to Latch Tx Data

? 1/10th or 1/20th Baud Rate Recovered Clocks

? Common Local Loopback Control

? Single Comma Detect Enable

? Cable Equalization in Receivers

? Automatic Lock-to-Reference

? JTAG Access Port

? 2kV ESD Protection on All Pins

? 3.3V Power Supply, 2.67 W Max Dissipation

? 208 pin, 23 mm BGA Packaging