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參數(shù)資料
| 型號(hào)： | VSC8121 |
| 廠商： | Vitesse Semiconductor Corporation. |
| 英文描述： | 2.488GHz SONET/SDH Clock Generator |
| 中文描述： | 2.488GHz的SONET / SDH時(shí)鐘發(fā)生器 |
| 文件頁(yè)數(shù)： | 2/18頁(yè) |
| 文件大?。?/td> | 176K |
| 代理商： | VSC8121 |
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VITESSE
Data Sheet
VSC8121
2.488GHz SONET/SDH
Clock Generator
Page 2
G52163-0, Rev 4.2
04/16/01
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano
Camarillo, CA 93012
Tel: (800) VITESSE
FAX: (805) 987-5896
Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Applications Information
High-Speed Clock Output
The differential clock output waveforms produced by the VSC8121 are sinusoidal in nature, by design. This
typically results in less noise generation than square pulses in most customer applications. Figure 1 shows a typ-
ical, single-ended clock output waveform produced by the device.
Figure 1: Typical Clock Output (CO) Waveform
CO and CON are high-speed CML outputs. As shown in Figure 2, the output driver consists of a differential
pair designed to drive a 50
transmission line environment. Note that the output driver is back terminated to
50
on-chip to prevent reflections.
Careful layout of these signals is required for optimal performance. Figure 3 demonstrates various termina-
tion methods that may be employed, depending on the particular application. Either DC-coupling (termination
#1 in Figure 3) or one of two AC coupling methods (terminations #2 and #3) may be used. As indicated, Vitesse
recommends termination #2 for AC-coupling.
100ps/div
75mV/div
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VSC8122 | Multi-Rate SONET/SDH Clock and Data Recovery IC |
| VSC8122QP | Multi-Rate SONET/SDH Clock and Data Recovery IC |
| VSC8123 | 10Mb/s to 2.7Gb/s Rate Agile, Adaptive Clock and Data Recovery |
| VSC8124 | Target Specification |
| VSC8131 | 2.488 Gbit/sec 32:1 SONET/SDH Mux with Clock Generator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| VSC8121QI | 制造商:Vitesse Semiconductor Corporation 功能描述: |
| VSC8122 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:Multi-Rate SONET/SDH Clock and Data Recovery IC |
| VSC8122QP | 制造商:Vitesse Semiconductor Corporation 功能描述: |
| VSC8123 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:10Mb/s to 2.7Gb/s Rate Agile, Adaptive Clock and Data Recovery |
| VSC8123RB | 制造商:Vitesse Semiconductor Corporation 功能描述: |
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