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VSC7125

ETC
Part Number VSC7125
Manufacturer ETC
Description 1.0625 Gbits/sec Fibre Channel Transceiver
Published Apr 16, 2005
Detailed Description VITESSE SEMICONDUCTOR CORPORATION Data Sheet VSC7125 Features • ANSI X3T11 Fibre Channel Compatible 1.0625 Gbps Full-d...
Datasheet PDF File VSC7125 PDF File

VSC7125
VSC7125

Overview
VITESSE SEMICONDUCTOR CORPORATION Data Sheet VSC7125 Features • ANSI X3T11 Fibre Channel Compatible 1.
0625 Gbps Full-duplex Transceiver • 10 Bit TTL Interface for Transmit and Receive Data • Monolithic Clock Synthesis and Clock Recovery - No External Components 1.
0625 Gbits/sec Fibre Channel Transceiver • 106.
25 MHz TTL Reference Clock • Low Power Operation - 650 mW • Suitable for Both Coaxial and Optical Link Applications • 64 Pin, 10mm or 14mm PQFP • Single +3.
3V Power Supply General Description The VSC7125 is a full-speed Fibre Channel Transceiver optimized for Disk Drive and other space constrained applications.
It accepts 10-bit 8B/10B encoded transmit data, latches it on the rising edge of REFCLK and serializes it onto the TX PECL differential outputs at a baud rate which is ten times the REFCLK frequency.
The VSC7125 also samples serial receive data on the RX PECL differential inputs, recovers the clock and data, deserializes it onto the 10-bit receive data bus, outputs two recovered clocks at one twentieth of the incoming baud rate and detects Fibre Channel “Comma” characters.
The VSC7125 contains on-chip PLL circuitry for synthesis of the baud-rate transmit clock, and extraction of the clock from the received serial stream.
These circuits are fully monolithic and require no external components.
VSC7125 Block Diagram EWRAP R0:9 10 QD Serial to Parallel ÷ 10 Retimed Data Recovered Clock QD Clock Recovery 2:1 RX+ RX- RCLK RCLKN Frame Logic ÷ 20 Comma Detect Resync COM_DET EN_CDET 10 T0:9 DQ Parallel to Serial Serial Data Synthesized Clock DQ TX+ TX- REFCLK PLL Clock Multiply G52121-0, Rev.
4.
1 4/23/98 © VITESSE SEMICONDUCTOR CORPORATION 741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896 Page 1 VITESSE SEMICONDUCTOR CORPORATION 1.
0625 Gbits/sec Fibre Channel Transceiver Data Sheet VSC7125 Functional Description Clock Synthesizer The VSC7125 clock synthesizer multiplies the reference frequency provided on the ...


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