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參數(shù)資料
| 型號(hào)： | CS2200-CP-CZZR |
| 廠商： | CIRRUS LOGIC INC |
| 元件分類： | XO, clock |
| 英文描述： | PHASE LOCKED LOOP, 75 MHz, PDSO10 |
| 封裝： | 3 MM, LEAD FREE, MO-187, MSOP-10 |
| 文件頁數(shù)： | 4/26頁 |
| 文件大?。?/td> | 307K |
| 代理商： | CS2200-CP-CZZR |
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CS2200-CP
12
DS759PP1
5.1.3
External Reference Clock (REF_CLK)
For operation with an externally generated REF_CLK signal, XTI/REF_CLK should be connected to the
reference clock source and XTO should be left unconnected or pulled low through a 47 k
resistor to
GND.
5.2
Output to Input Frequency Ratio Configuration
5.2.1
User Defined Ratio (RUD)
The User Defined Ratio, RUD, is a 32-bit un-signed fixed-point number, stored in the Ratio register set,
which determines the basis for the desired input to output clock ratio. The 32-bit RUD is represented in a
12.20 format where the 12 MSBs represent the integer binary portion while the remaining 20 LSBs repre-
sent the fractional binary portion. The maximum multiplication factor is approximately 4096 with a resolu-
tion of 0.954 PPM in this configuration. See “Calculating the User Defined Ratio” on page 23 for more
information.
The status of internal dividers, such as the internal timing reference clock divider, are automatically taken
into account. Therefore RUD is simply the desired ratio of the output to input clock frequencies.
5.2.2
Manual Ratio Modifier (R-Mod)
The manual Ratio Modifier is used to internally multiply/divide the RUD (the Ratio stored in the register
The R-Mod value selected by RModSel[2:0] is always used in the calculation for the Effective Ratio
(REFF), see “Effective Ratio (REFF)” on page 13. If R-Mod is not desired, RModSel[2:0] should be left at
its default value of ‘000’, which corresponds to an R-Mod value of 1, thereby effectively disabling the ratio
modifier.
Table 1. Ratio Modifier
Referenced Control
Register Location
Ratio...................................... “Ratio (Address 06h - 09h)” on page 21
RModSel[2:0]
Ratio Modifier
000
1
001
2
010
4
011
8
100
0.5
101
0.25
110
0.125
111
0.0625
Referenced Control
Register Location
Ratio...................................... “Ratio (Address 06h - 09h)” on page 21
RModSel[2:0] ........................ “R-Mod Selection (RModSel[2:0])” section on page 20
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS2200CP-CZZR | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 IC General Purpose PLL Crystal RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| CS2200CP-DZZ | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 IC General Purpose PLL Crystal RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| CS2200CP-DZZR | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 IC General Purpose PLL Crystal RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| CS2200-OTP | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Fractional-N Frequency Synthesizer |
| CS2200-OTP_09 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Fractional-N Frequency Synthesizer |
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