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| 型号： | CS2000P-DZZR |
| 厂商： | CIRRUS LOGIC INC |
| 元件分类： | PLL合成/DDS/VCOs |
| 中文描述： | PHASE LOCKED LOOP, 30 MHz, PDSO10 |
| 封装： | 3 MM, LEAD FREE, MO-187, MSOP-10 |
| 文件页数： | 16/26页 |
| 文件大小： | 251K |
| 代理商： | CS2000P-DZZR |
CS2200-CP
DS759F2
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 |
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| CS2001YDWFR20 | 功能描述:IC REG BST FLYBK ADJ 1.2A 20SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:3.3V 输入电压:4.5 V ~ 24 V PWM 型:- 频率 - 开关:- 电流 - 输出:125mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 包装:Digi-Reel® 供应商设备封装:SOT-6 其它名称:MAX1836EUT33#TG16DKR |
| CS2002-8 | 制造商:Edwards Signaling & Security Systems 功能描述:FIRE ALARM STATION, 270-DOC |
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