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参数资料
| 型号： | CS2200-CP-CZZR |
| 厂商： | CIRRUS LOGIC INC |
| 元件分类： | XO, clock |
| 英文描述： | PHASE LOCKED LOOP, 75 MHz, PDSO10 |
| 封装： | 3 MM, LEAD FREE, MO-187, MSOP-10 |
| 文件页数： | 4/26页 |
| 文件大小： | 307K |
| 代理商： | CS2200-CP-CZZR |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS2200CP-CZZR | 功能描述:时钟合成器/抖动清除器 IC General Purpose PLL Crystal RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| CS2200CP-DZZ | 功能描述:时钟合成器/抖动清除器 IC General Purpose PLL Crystal RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| CS2200CP-DZZR | 功能描述:时钟合成器/抖动清除器 IC General Purpose PLL Crystal RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| CS2200-OTP | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:Fractional-N Frequency Synthesizer |
| CS2200-OTP_09 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:Fractional-N Frequency Synthesizer |
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