VSC8479
9.95 Gbps to 11.3 Gbps 16-bit Transceiver
The VSC8479 is a 1:16, 16:1 transceiver with integrated Clock and Data Recovery unit (CDR) and Clock
Multiplier Unit (CMU) that provides the most comprehensive solution available in the industry. Continuous
frequency of operation spans from 9.953 Gbps to 11.3 Gbps over full temperature range.
Targeted for XFP Host ASIC SERDES, 300 pin module and DWDM line card applications, the VSC8479 provides
industry leading optimization of power, performance, programmability, price and feature integration. The
1.15 W total power dissipation enables 300 pin MSA module vendors to provide performance and functionality
advantages while dropping the overall power dissipation of their existing modules. The VSC8479 is a perfect
choice for XFP motherboards with proven inter-operability with all major XFP module vendors.
The receiver path has a high sensitivity receiver with a programmable VGA and input bandwidth equalization
(EQ) to provide stressed input data eye compensation. No external post amplifier is required for most
applications. The high-speed output is swing and pre-emphasis programmable to support a variety laser driver
and XFI host ASIC applications.
The VSC8479 fully supports all features, functions and clock modes required for 300-pin multi-source
agreement (MSA) transponder module full compliance. All loopback modes are supported with multiple line
timing clock modes.
A highly flexible reference clock source selection and reference clock clean-up support scheme is provided to
minimize external circuitry. A selectable two-wire serial or Serial Peripheral Interface (SPI) provides full microcontroller access to all status and control registers, including software read-back capability of all external control
input pins. Any combination of discrete pins and serial register status and control can be employed. A highly
flexible PRBS and user defined pattern checker and error count provides system analysis and built-in selftesting.
Robust cross talk immunity enables the VSC8479 to operate the Tx and Rx paths asynchronously to each
other while exceeding SONET level jitter generation and jitter tolerance performance. A high-speed output clock
can be optionally enabled for higher performance applications. An adjustable loss of signal (LOS) indicator is
integrated into the device enabling optical modulation amplitude monitoring.
The power supply scheme provides a high degree of flexibility. The device can operate on a single +1.8 V supply
with an optional +3.3 V I/O supply for 3.3 V compliant interfacing. The Tx path and Rx path can be powered
down independently. The single chip, small footprint (17 x 17 mm) allows for both cost reduction and board size
reduction for price and size aggressive, small form factor module applications. All VSC8479 devices are tested
at high-speed to insure the highest performance and quality standards you’ve come to expect from Microsemi.
TXPCLK with Phase Adjust
TXMCLK
High-Speed Clock*
High-Speed Data
Tx Ref Clock
Rx Ref Clock
Ex Ref Clock
16:1
MUX
Ref Clk
Distribution and
Clean up
Support
Adjustable LOS
High-Speed Data
Control/Status Signals
Mute Controls
Invert Controls
LOL Alarms
External Pin Read Back
CDR
EQ
VGA
FIFO
16 × 16
FIFO Alarm
SFI-4
TXPICLK
Phase 1/
16Low-Speed Data
XSBI
CMU
Loopback
and BIST
1:16
DEMUX
Line Loopback
Diagnostic Loopback
SFI-4
Phase 1/
XSBI
RXMCLK
RXPOCLK
16Low-Speed Data
I2C / SPI
Interface
*With Enable/Disable
Two-wire Interface / SPI Port
Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability
whatsoever arising out of the application or use of any product or circuit. The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction
with mission-critical equipment or applications. Any performance specifications are believed to be reliable but are not verified, and Buyer must conduct and complete all performance and other testing of the products, alone
and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifications or parameters provided by Microsemi. It is the Buyer’s responsibility to independently determine suitability
of any products and to test and verify the same. The information provided by Microsemi hereunder is provided “as is, where is” and with all faults, and the entire risk associated with such information is entirely with the Buyer.
Microsemi does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other IP rights, whether with regard to such information itself or anything described by such information. Information provided in
this document is proprietary to Microsemi, and Microsemi reserves the right to make any changes to the information in this document or to any products and services at any time without notice.
VSC8479
9.95 Gbps to 11.3 Gbps 16-bit Transceiver
Features
Benefits
• 16:1 Mux/Demux Transceiver With Integrated Clock Multiplier
Unit, and 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 Self-test Generation and Error Detection: Industry
Standard PRBS Generation and Detection, User Defined
Patterns
• Full Support for 300-Pin MSA Transponder Modules: Multiple
Reference Clock Source Inputs and Selectable Frequencies,
Facility and Equipment Loopback Modes, Support for Line
Timing Mode with Clock Clean-up, Loss of Lock (LOL) and
FIFO Alarm Outputs, Adjustable Loss of Signal (LOS) Alarm
• Two-wire or SPI Micro-controller Serial Interface Port
(selectable): Programmable Registers for Access to All Control/
Status Signals
• TxRef Clock, RxRef Clock and ExRef Clock Sources: Flexible
Reference Clock Routing, Reference Clock “Clean-up” Phase
Detector
• Selectable Duobinary Modulation Pre-Coder
• Programmable High-speed Input Voltage Offset Adjust
• High-speed Data Inversion and Low-Speed Bit Order Swap
• High-speed CML Clock Output with Power Down Mode
• Proven XFP/SFP+ Module Inter-operability
• Low Power, Full Featured CMOS Transceiver
• Single Chip Mux/Demux Solution: Provides Complete Set of
300 Pin MSA Transponder Functions Including all Loopback
and Clocking Modes
• Robust Asynchronous Operation and High Immunity to Crosstalk
• Multiple Reference Clock Source and Clean up Schemes
Applications
•
•
•
•
•
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
Key Specifications
• Continuous Frequency of Operation: 9.95 Gbps to 11.3 Gbps
• Exceeds SONET Band Jitter Generation Performance (35 mUI)
• Better than 2x Margin to the OC-192 Jitter Tolerance SONET
Mask
• Excellent Crosstalk Immunity and Asynchronous Tx and Rx
Operation
• 10 mV Input Data Sensitivity (differential)
• OIF 99.102.8 LVDS Compatible Parallel Data Inputs and
Outputs
• 1.8 V Single Power Supply with Optional 3.3 V LVTTL I/O
• 1.15 Watt Typical Power
• -5 ºC Ambient to 90 ºC Case Temperature
• 17 mm x 17 mm, 244-Ball, CBGA Package
• 12 x 12, 195 pin FCBGA Package
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Sales: +1 (949) 380-6136
Fax: +1 (949) 215-4996
email: sales.support@microsemi.com
www.microsemi.com
Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor and system solutions for communications, defense and security, aerospace, and industrial markets. Products include high-performance and radiationhardened analog mixed-signal integrated circuits, FPGAs, SoCs, and ASICs; power management products; timing and
synchronization devices and precise time solutions; voice processing devices; RF solutions; discrete components; enterprise storage and communications solutions, security technologies, and scalable anti-tamper products; Ethernet solutions;
Power-over-Ethernet ICs and midspans; custom design capabilities and services. Microsemi is headquartered in Aliso Viejo,
California, and has approximately 4,800 employees worldwide. Learn more at www.microsemi.com.
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