MICROCHIP VSC8479YYY

The VSC8479 is a 1:16, 16:1 transceiver integrating CDR and CMU, providing the industry's most comprehensive solution. It operates continuously across the full temperature range at frequencies from 9.953 Gbps to 11.3 Gbps. Targeting XFP host ASIC SERDES, 300-pin module, and DWDM line card applications, this device leads the industry in power, performance, programmability, price, and feature integration. Its total power consumption of 1.15 W enables 300-pin MSA module vendors to reduce overall module power while delivering performance and functional advantages. The VSC8479 is interoperable with all major XFP module vendors, making it the ideal choice for XFP host boards. The receiver path features a high-sensitivity receiver with programmable VGA and input bandwidth equalization (EQ) to compensate for stressed input data eye diagrams, eliminating the need for an external post-amplifier in most applications. High-speed output swing and pre-emphasis are programmable to support a wide range of laser driver and XFI host ASIC applications. The VSC8479 fully supports all functions, features, and clock modes required for full compliance of 300-pin MSA transponder modules, including all loopback modes and multiple line-timing clock modes. It provides highly flexible reference clock source selection and reference clock cleanup support to minimize external circuitry. An optional two-wire serial or SPI interface gives microcontrollers full access to all status and control registers, including software readback of all external control input pins. Any combination of discrete pin and serial register status and control can be used. Highly flexible PRBS and user-defined pattern checker and error counter functions enable system analysis and built-in self-test. Robust crosstalk immunity allows the VSC8479 Tx and Rx paths to operate asynchronously while exceeding SONET-grade jitter generation and jitter tolerance performance. For high-performance applications, a high-speed output clock can optionally be enabled. The device integrates an adjustable loss-of-signal (LOS) indicator for optical modulation amplitude monitoring. The power supply scheme is highly flexible — the device operates from a single +1.8 V supply with an optional +3.3 V I/O supply for 3.3 V compatible interfaces. The Tx and Rx paths can be powered down independently. A single-chip, small form factor (17×17 mm) reduces cost and board space, making it suitable for compact, cost- and size-sensitive module applications. All VSC8479 devices are tested at high speed to ensure the highest levels of performance and quality expected of Microsemi.

• 16:1 MUX/DEMUX transceiver with integrated clock multiplication unit, clock and data recovery unit with limiting amplifier
• 0.13 μm CMOS process technology
• XFI output compliance mode for XFP modules
• Programmable input signal bandwidth equalization (EQ): enhanced optical performance, enhanced XFI stressed eye performance
• Built-in BIST generation and error detection: industry-standard PRBS generation and detection, user-defined patterns
• Full 300-pin MSA transponder module support: multiple reference clock source inputs and selectable frequencies, facility and equipment loopback modes, line timing mode with clock cleanup support, loss-of-lock (LOL) and FIFO alarm outputs, adjustable loss-of-signal (LOS) alarm
• Two-wire or SPI microcontroller serial interface port (optional): programmable registers for access to all control/status signals
• TxRef, RxRef, and ExRef clock sources: flexible reference clock routing, reference clock "cleanup" phase detector
• Optional duobinary modulation precoder
• Programmable high-speed input voltage offset adjustment
• High-speed data inversion and low-speed bit order swap
• High-speed CML clock output with power-down mode

• SFP+ SR/LR module to host SERDES applications
• XFP module XFI to host SERDES applications
• 300-pin MSA transponder modules
• 10GE and Fibre Channel to SFI-4 SERDES applications
• SONET/SDH and DWDM systems