VSC7140 Vitesse Semiconductor Corp., VSC7140 Datasheet
VSC7140
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VSC7140 Summary of contents
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... MHz Reference Clock General Description The VSC7140 is a dual Fibre Channel repeater which can be used in Hubs, JBODs or any Fibre Channel Subsystem requiring clean incoming and outgoing signals at a bulkhead connector. The digital Clock Recovery Unit (CRU) recovers incoming data from an external device, amplifies it and attenuates jitter. A digital Signal Detect Unit (SDU) determines whether the incoming signal contains invalid Fibre Channel data ...
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... Dual Repeater / Hub Node Functional Description The VSC7140 contains two fully integrated repeaters to improve signal quality and determine whether the input to the repeater contains invalid Fibre Channel data. Each repeater consists of a Clock Recovery Unit (CRU) and a digital Signal Detect Unit (SDU). The CRU locks onto the incoming signal, generates a recovered clock (nominally 1 ...
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... Hub mode (HUB is HIGH) to fully handle the functions of two Hub Nodes. Dual Repeater Mode In this example, the VSC7140 forms a dual repeater in a complex Fibre Channel system, such as a JBOD (Just a Bunch Of Disks) RAID (Redundant Array of Independent Disks) subsystem, which requires the incom- ing Fibre Channel signal to be retimed to ensure adequate signal quality to the input of the subsystem ...
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... RX1 connects to the external output from Device #1. TX1 connects to the external input to Device #1. RX2 connects to the external output from Device #2. TX2 connects to the external input to Device #2. SI1 is connected to the SO2 output of the previous VSC7140. SI2 is pulled up SI2+ with 22k Ohms. SO2 is connected to the SI1 input of the next VSC7140. SO1 is left unconnected. ...
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... Data Sheet VSC7140 AC Characteristics RXn, SIn SOn, TXn REFCLK T T Table 1: AC Characteristics Parameters Description Differential Inputs/Outputs Latency from Serial Input (RXn SIn) to Serial Output (TXn/SOn) T Differential Output Rise/Fall time S Reference Clock Requirements T REFCLK input rise/fall times T F REFCLK Frequency ...
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... Internet: www.vitesse.com Data Sheet VSC7140 Units Conditions V V — 2 0 -1.0mA +1.0mA 3. Outputs open, V ...
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... Data Sheet VSC7140 Input Structures Two input structures exists in this part; TTL and High Speed, Differential Inputs. The TTL Inputs will inter- face with any TTL or 3. CMOS outputs. The High Speed, Differential Inputs are intended Coupled per the FC-PH specification. Being AC Coupled, the High Speed, Differential Input buffers are biased ...
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... VITESSE VSC7140QJ NOTE: Heat spreader is not internally connected electrically. It should not be connected electrically by the user. Internet: www.vitesse.com Data Sheet VSC7140 41 39 TX1+ TX1- 37 VDDP SO1+ SO1- 35 INC_VSS 33 VSS INC_VSS SO2+ 31 SO2- VDDP 29 TX2+ TX2- ...
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... Analog Power Supply. 3.3V for Clock Multiplier PLL. Bypass to pin 7. Ground. Internally Not Connected. Connect these pins to VDD for compatibility with future versions of the VSC7140. Internally Not Connected. Connect these pins to VSS for compatibility with future versions of the VSC7140. Internet: www.vitesse.com 1.0625 Gb/s Fibre Channel Dual Repeater / Hub Node Page 9 ...
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... VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com VITESSE SEMICONDUCTOR CORPORATION 52 (QJ) PQFP Package Drawing STANDOFF 0.25 MAX 0. Internet: www.vitesse.com Data Sheet VSC7140 Item mm Tolerance A 2.45 MAX D 2.00 +0.15/-0.10 E 0.30 ±0.05 F 13.20 ±0.25 G 10.00 ±0.10 H 13.20 ±0.25 I 10.00 ± ...
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... Thermal resistance from case to ambient in 600 LFPM air. ca-600 The user must ensure that the maximum case temperature specification (95 thermal resistance of the package in still air, the user may operate the VSC7140 in still air if the ambient tem- o perature does not exceed 32 C (95 is required, an appropriate heatsink must be used with the part or adequate airflow must be provided ...
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... Dual Repeater / Hub Node Ordering Information The order number for this product is formed by a combination of the device number and package type. Device Type VSC7140 - Dual Repeater / Hub Node Package Type QJ: 52 Pin Thermally Enhanced PQFP, 10x10 mm Body Marking Information The package is marked with three lines of text as shown below (QJ Package): ...