VSC7123QN Vitesse Semiconductor Corp., VSC7123QN Datasheet

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Data Sheet VSC7123 Features • 802.3z Gigabit Ethernet-Compliant 1.25 Gb/s Transceiver • ANSI X3T11 Fibre Channel-Compliant 1.0625 Gb/s Transceiver • 0.98 to 1.36 Gb/s Full-Duplex Operation • 10-Bit TTL Interface for Transmit and Receive Data General Description The VSC7123 is ...

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Transceiver for Fibre Channel and Gigabit Ethernet Functional Description Clock Synthesizer The VSC7123 clock synthesizer multiplies the reference frequency provided on the REFCLK pin achieve a baud rate clock between 0.98GHz and 1.36GHz. The on-chip Phase ...

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Data Sheet VSC7123 serial data is retimed, deserialized and output on R(0:9). The parallel data will be captured by the adjoining protocol logic on the rising edges of RCLK and RCLKN. If serial input data is not present or does ...

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Transceiver for Fibre Channel and Gigabit Ethernet Figure 2: Detection of a Properly Aligned Comma Character RCLK RCLKN COMDET R(0:9) RCLK RCLKN COMDET R(0:9) Potentially Corrupted Page 4 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA ...

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Data Sheet VSC7123 Signal Detection The receiver has an output, SIGDET, indicating, when HIGH, that the RX input contains a valid Fibre Channel or Gigabit Ethernet signal. A combination of one analog and three digital checks are used to determine ...

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Transceiver for Fibre Channel and Gigabit Ethernet REFCLK T(0:9) Data Valid Table 2: Transmit AC Characteristics Parameters Description T(0:9) Setup time to the rising T 1 edge of REFCLK T(0:9) hold time after the rising T 2 edge of ...

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Data Sheet VSC7123 RCLK RCLKN Data Valid R(0:9) Table 3: Receive AC Characteristics Parameters Description TTL Outputs Valid prior RCLK/RCLKN rise TTL Outputs Valid after T 2 RCLK or RCLKN rise Delay between rising edge of T ...

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Transceiver for Fibre Channel and Gigabit Ethernet REFCLK Table 4: Reference Clock Requirements Parameter Description FR Frequency Range FO Frequency Offset DC REFCLK duty cycle T ,T REFCLK rise and fall time R F Page 8 © VITESSE SEMICONDUCTOR ...

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Data Sheet VSC7123 Figure 7: Parametric Measurement Information Serial Input Rise and Fall Time T R Receiver Input Eye Diagram Jitter Tolerance Mask Serial Output Load Z = 75W 0 G52212-0, Rev 4.3 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle ...

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Transceiver for Fibre Channel and Gigabit Ethernet V DDD INPUT GND TTL Inputs (not REFCLK +3.3 V 12.6K REFCLK 9.3K 12.6K GND REFCLK TTL Input V DDT V V SST SSD TTL Outputs Page 10 © VITESSE ...

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Data Sheet VSC7123 DC Characteristics (over recommended operating conditions) Parameters Description V Output HIGH voltage (TTL Output LOW voltage (TTL Input HIGH voltage (TTL Input LOW voltage (TTL Input HIGH current (TTL) ...

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Transceiver for Fibre Channel and Gigabit Ethernet Absolute Maximum Ratings Power Supply Voltage ................................................................................................................ – 0. Input Voltage (PECL inputs) ................................................................................................ – 0. Input Voltage (TTL inputs) ........................................................................................................... – 0.5V ...

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Data Sheet VSC7123 Package Pin Descriptions 1 V SSD DDD DDD SSD 15 V SSA CAP0 17 Table 5: Pin Identifications ...

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Transceiver for Fibre Channel and Gigabit Ethernet Pin # Name OUTPUTS - Differential PECL (AC-coupling recommended): 62, 61 TX+, TX- These pins output the serialized transmit data when EWRAP is LOW. When EWRAP is HIGH, TX+ is HIGH and ...

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Data Sheet VSC7123 Package Information: 64-pin PQFP TYP 0.30 RAD. TYP. 0.20 RAD. TYP. G52212-0, Rev 4.3 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 ...

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Transceiver for Fibre Channel and Gigabit Ethernet Package Information: 64-pin TQFP 11/13 8 PLACES A 0.08/0.20 R 0.08 R MIN Page 16 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • ...

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Data Sheet VSC7123 Package Thermal Considerations The VSC7123 is packaged in a 14mm, thermally-enhanced PQFP with an internal heat spreader a 10 mm, thermally enhanced PQFP and a 10mm cavity-down, exposed pad TQFP. These packages use industry-standard EIAJ footprints, but ...

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Transceiver for Fibre Channel and Gigabit Ethernet Ordering Information The part number for this product is formed by a combination of the device number and the package style. Device Type 10-Bit Transceiver Marking Information The package is marked with ...