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參數(shù)資料
| 型號： | VSC8114QB1 |
| 廠商： | VITESSE SEMICONDUCTOR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | VGA TO HDTV CONVERTER PLUS |
| 中文描述： | MUX/DEMUX, PQFP100 |
| 封裝： | HEAT SINK, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 22/24頁 |
| 文件大?。?/td> | 434K |
| 代理商： | VSC8114QB1 |
VITESSE
Data Sheet
VSC8114
ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux
with Integrated Clock Generation and Clock Recovery
Page 22
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 805/388-3700 FAX: 805/987-5896
G52185-0, Rev 4.0
11/1/99
Layout of the High Speed Signals
The routing of the High Speed signals should be done using good high speed design practices. This would
include using controlled impedance lines and keeping the distance between components to an absolute mini-
mum. In addition, stubs should be kept at a minimum as well as any routing discontinuities. This will help min-
imize reflections and ringing on the high speed lines and insure the maximum eye opening. In addition the
output pull down resistor should be placed as close to the VSC8114 pin as possible while the AC-coupling
capacitor and the biasing resistors should be placed as close as possible to the optics input pin. The same is true
on the receive circuit side. Using small outline components and minimum pad sizes also helps in reducing dis-
continuities.
Ground Planes
The ground plane for the components used in the High Speed interface should be continuous and not sec-
tioned in an attempt to provide isolation to various components. Sectioning of the ground planes tends to inter-
fere with the ground return currents on the signal lines. In addition, the smaller the ground planes the less
effective they are in reducing ground bounce noise and the more difficult to decouple. Sectioning of the positive
supplies can provide some isolation benefits.
Figure 13: AC Coupled High Speed I/O
Table 15: AC Coupling Component Values
Component
Value
Tolerance
R1
R2
R3
R4
270 ohms
75 ohms
68 ohms
190 ohms
5%
5%
1%
1%
C1, C2, C3, C4
.01uf High Frequency
PC Board Trace
PC Board Trace
DRIVER
(Optics Module)
RECEIVER
(Optics Module)
VSC8113
PECL I/O
R2
R4
C2
C1
R3
Note: Only one side of a differential signal is shown.
R1
GND
+3.3V
+5.0V
GND
GND
GND
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相關代理商/技術參數(shù) |
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| VSC8114QB2 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux with Integrated Clock Generation and Clock Recovery |
| VSC8115 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:STS-12/STS-3 Multi Rate Clock and Data Recovery Unit |
| VSC8115XYA-05-T | 功能描述:IC CLOCK/DATA RECOVERY 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1 系列:- 類型:時鐘/頻率發(fā)生器，多路復用器 PLL:是 主要目的:存儲器，RDRAM 輸入:晶體 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:1:2 差分 - 輸入:輸出:無/是 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:Digi-Reel® 其它名稱:296-6719-6 |
| VSC8115XYA-06-T | 功能描述:IC CLOCK/DATA RECOVERY 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅(qū)動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| VSC8115YA | 制造商:Vitesse Semiconductor Corporation 功能描述: |
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