參數(shù)資料
型號： ICS8430S10BYI-02LF
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 11/31頁
文件大?。?/td> 0K
描述： IC CLK GENERATOR PLL 48TQFP
標(biāo)準(zhǔn)包裝： 250
類型： 時鐘/頻率發(fā)生器，扇出緩沖器（分配），多路復(fù)用器
PLL： 是
主要目的： Cavium 處理器
輸入： LVCMOS，LVDS，LVPECL，LVTTL，SSTL，晶體
輸出： LVCMOS，LVDS，LVPECL，LVTTL
電路數(shù)： 1
比率 - 輸入:輸出： 2:10
差分 - 輸入:輸出： 是/是
頻率 - 最大： 133.33MHz
電源電壓： 3.135 V ~ 3.465 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 48-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝： 48-PTQFP-EP（7x7）
包裝： 托盤
ICS8430S10BYI-02 REVISION C JANUARY 17, 2011
19
2011 Integrated Device Technology, Inc.
ICS8430S10I-02 Data Sheet
CLOCK GENERATOR FOR CAVIUM PROCESSORS
Termination for 3.3V LVPECL Outputs
The clock layout topology shown below is a typical termination for
LVPECL outputs. The two different layouts mentioned are
recommended only as guidelines.
The differential output pair is low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, terminating
resistors (DC current path to ground) or current sources must be
used for functionality. These outputs are designed to drive 50
transmission lines. Matched impedance techniques should be used
to maximize operating frequency and minimize signal distortion.
Figures 4A and 4B show two different layouts which are
recommended only as guidelines. Other suitable clock layouts may
exist and it would be recommended that the board designers
simulate to guarantee compatibility across all printed circuit and clock
component process variations.
Figure 4A. 3.3V LVPECL Output Termination
Figure 4B. 3.3V LVPECL Output Termination
LVDS Driver Termination
A general LVDS interface is shown in Figure 5. Standard termination
for LVDS type output structure requires both a 100
parallel resistor
at the receiver and a 100
differential transmission line environment.
In order to avoid any transmission line reflection issues, the 100
resistor must be placed as close to the receiver as possible. IDT
offers a full line of LVDS compliant devices with two types of output
structures: current source and voltage source. The standard
termination schematic as shown in Figure 5 can be used with either
type of output structure. If using a non-standard termination, it is
recommended to contact IDT and confirm if the output is a current
source or a voltage source type structure. In addition, since these
outputs are LVDS compatible, the amplitude and common mode
input range of the input receivers should be verified for compatibility
with the output.
Figure 5. Typical LVDS Driver Termination
3.3V
V
CC - 2V
R1
50
R2
50
RTT
Z
o = 50
Z
o = 50
+
_
RTT =
* Z
o
1
((V
OH + VOL) / (VCC – 2)) – 2
3.3V
LVPECL
Input
R1
84
R2
84
3.3V
R3
125
R4
125
Z
o = 50
Z
o = 50
LVPECL
Input
3.3V
+
_
100
–
+
100
Differential Transmission Line
LVDS Driver
LVDS
Receiver
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ICS8430S10BYI-02LFT 功能描述:IC CLK GENERATOR PLL 48TQFP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標(biāo)準(zhǔn)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(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT
ICS8430S10I-03 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Clock Generator for Cavium Processors
ICS8431-01 制造商:ICS 制造商全稱:ICS 功能描述:200MHZ, LOW JITTER, LVPECL FREQUENCY SYNTHESIZER
ICS843101-312 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 312.5MHZ FREQUENCY MARGINING SYNTHESIZER
ICS843101AG-312 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 312.5MHZ FREQUENCY MARGINING SYNTHESIZER
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