VSC7127 Vitesse Semiconductor Corp., VSC7127 Datasheet
VSC7127
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VSC7127 Summary of contents
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... Fibre Channel signals to an array of disk drives in an FC-AL loop as illustrated in Figure 1. The first VSC7127’s CRU is configured as a Repeater to attenuate jitter, the second VSC7127’s CRU is bypassed to reduce power and the third VSC7127’s CRU is configured as a retimer so that the output of the device is a jitter- compliance point. ...
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... Bypass Circuits for Fibre Channel Application: Fibre Channel Disk Arrays A 12-port JBOD is shown in Figure 1. This dual loop application uses 3 VSC7127Xs on each loop in order to configure the FC-AL disk array. Functional drives are included in the FC-AL loop while non-functional or missing drives (numbers are excluded. ...
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... Device Configurations Four devices are specified in this datasheet: VSC7127R, VSC7127T, VSC7129R and VSC7129T. The VSC7127 is pin-compatible to the HDMP-0451. The VSC7129 is pin compatible with the HDMP-0452. The VSC712xR is configured as a Repeater when pin 12, MODE, is LOW Retimer when HIGH. The VSC712xT is configured as a Retimer when pin 12, MODE, is LOW Repeater when HIGH. ...
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... Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com VITESSE SEMICONDUCTOR CORPORATION Figure 2: 8-Drive JBOD Drive 3 Drive SEL3 SEL1 SEL4 MODE 1 RTMR SEL0 O0 I0 Connector Internet: www.vitesse.com Data Sheet VSC7127/VSC7129 Drive 6 I2 SEL2 SEL3 O4 MODE=1 I4 SEL1=1 SEL4 O0 Drive 8 G52298-0, Rev 4.3 05/01/01 ...
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... Data Sheet VSC7127/VSC7129 AC Characteristics (Over Recommended Operating Conditions) Ix+/- Ox+/- Table 1: AC Characteristics Parameters Description T Propagation delay (Repeater mode Propagation delay (Retimer mode Serial data rise and fall time R F Data jitter accumulation T j(PBC) (PBC only) Total data output jitter ...
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... Internet: www.vitesse.com Data Sheet VSC7127/VSC7129 V IH(MIN) V IL(MAX) Units Conditions MHz Maximum frequency offset ppm between transmit and receive reference clocks on one link % Measured at 1.5V ns Between V and V IL(MAX) IH(MIN) ...
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... Data Sheet VSC7127/VSC7129 Absolute Maximum Ratings TTL Power Supply Voltage (V DD PECL DC Input Voltage (V ) ............................................................................................. -0. INP TTL DC Input Voltage (V )........................................................................................................... -0.5V to 5.5V INT DC Voltage Applied to Outputs for High Output State (V TTL Output Current (I ), (DC, output high) .......................................................................................... +50mA OUT PECL Output Current (DC, output high)........................................................................................ -50mA ...
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... VSC7129 MODE REFCLK VDDA NOTE: (1) The VSC7124 PBC device similar to the VSC7127/VSC7129 without the FibreTimer™ Repeater/Retimer functionality. Page 8 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com ...
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... INPUT - TTL (NOTE: Different for VSC7127T or VSC7127R) In the VSC7127T, MODE configures the part as a Retimer if LOW or a Repeater if HIGH. In the VSC7127R, MODE configures the parts as a Repeater if LOW or a Retimer if HIGH. If unused, tie HIGH or LOW. ...
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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 0.17 MAX 0. Internet: www.vitesse.com Data Sheet VSC7127/VSC7129 Item mm Tol. A 2.45 MAX D 2.00 +0.10 E 0.35 +.05 F 13.20 +.25 G 10.00 +.10 H 13.20 +.25 I 10.00 +.10 J 0.88 + ...
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... VSC7127/VSC7129 Package Thermal Characteristics The VSC7127/VSC7129 is packaged in a standard plastic quad flatpack, PQFP, with an embedded, but unexposed thermal heatslug. This package adheres to industry-standard EIAJ footprints for body, 44 lead PQFP. The package construction is as shown in Figure 6. The 44 PQFP with embedded slug has the thermal properties shown in Figure 6. Figure 6: Package Cross Section— ...
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... VSC7129T Configured as a Retimer when MODE is HIGH. HDMP-0452 compatible VSC7129R Configured as a Repeater when MODE is LOW. HDMP-0452 compatible Package Type QM: 44-pin PQFP, 10mm Body Marking Information The package is marked with three lines of text as shown in Figure 7 (VSC7127TQM shown). Pin 1 Identifier Part Number DateCode Notice Vitesse Semiconductor Corporation (“ ...