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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： | 16/26页 |
| 文件大小： | 307K |
| 代理商： | CS2200-CP-CZZR |
CS2200-CP
DS759PP1
23
9. CALCULATING THE USER DEFINED RATIO
Note:
The software for use with the evaluation kit has built in tools to aid in calculating and converting the User
Defined Ratio. This section is for those who are not interested in the software or who are developing their
systems without the aid of the evaluation kit.
Most calculators do not interpret the fixed point binary representation which the CS2200 uses to define the output
to input clock ratio (see Section 5.2.1 on page 12); However, with a simple conversion we can use these tools to
generate a binary or hex value which can be written to the Ratio register.
9.1
12.20 Format
To calculate the User Defined Ratio (RUD) to store in the register(s), divide the desired output clock frequen-
cy by the given input clock (RefClk). Then multiply the desired ratio by the scaling factor of 220 to get the
scaled decimal representation; then use the decimal to binary/hex conversion function on a calculator and
write to the register. A few examples have been provided in Table 2.
Table 2. Example 12.20 R-Values
Desired Output to Input Clock Ratio
(output clock/input clock)
Scaled Decimal
Representation =
(output clock/input clock)
220
Hex Representation of
Binary RUD
12.288 MHz/10 MHz=1.2288
1288490
00 13 A9 2A
11.2896 MHz/44.1 kHz=256
268435456
10 00 00 00
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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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