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