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参数资料
| 型号： | LMK02000 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 时钟及定时 |
| 英文描述： | Precision Clock Conditioner with Integrated PLL |
| 中文描述： | 2000 SERIES, PLL BASED CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), QCC48 |
| 封装： | 7 X 7 MM, 0.80 MM HEIGHT, LLP-48 |
| 文件页数： | 7/18页 |
| 文件大小： | 377K |
| 代理商： | LMK02000 |
2.4 Register R15
2.4.1 PLL_N[17:0] -- PLL N Divider
These bits program the divide value for the PLL N Divider. The PLL N Divider follows the Input Divider and precedes the PLL phase
detector. Since the Input Divider is also in the feedback path from the VCO to the PLL Phase Detector, the total N divide value,
N
Total, is also influenced by the Input Divider value. NTotal = PLL N Divider * Input Divider. The VCO frequency is calculated as,
f
VCO = fOSCin * PLL N Divider * Input Divider / R. Since the PLL N divider is a pure binary counter, there are no illegal divide values
for PLL_N[17:0].
PLL_N[17:0]
PLL N Divider Value
0
Invalid
0
1
.
...
1
262143
2.4.2 INPUT_DIV[3:0] -- Input Divider
These bits program the divide value for the Input Divider. The Input Divider follows the VCO output and precedes the clock distri-
bution blocks. Since the Input Divider is in the feedback path from the VCO to the PLL phase detector the Input Divider contributes
to the total N divide value, N
Total. NTotal = PLL N Divider * Input Divider. The Input Divider can not be bypassed. See 2.4.1 (PLL N
Divider) for more information on setting the VCO frequency.
INPUT_DIV[3:0]
Input Divider Value
0
Invalid
0
1
Invalid
0
1
0
2
0
1
3
0
1
0
4
0
1
0
1
5
0
1
0
6
0
1
7
1
0
8
1
0
1
Invalid
.
...
1
Invalid
2.4.3 PLL_CP_GAIN[1:0] -- PLL Charge Pump Gain
These bits set the charge pump gain of the PLL.
PLL_CP_GAIN[1:0]
Charge Pump Gain
0
1x
1
4x
2
16x
3
32x
15
www.national.com
LMK02000
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LMK02000EVAL-1 | 功能描述:时钟和定时器开发工具 LMK02000EVAL BOARD(WITH VCXO) RoHS:否 制造商:Texas Instruments 产品:Evaluation Modules 类型:Clock Conditioners 工具用于评估:LMK04100B 频率:122.8 MHz 工作电源电压:3.3 V |
| LMK02000EVAL2 | 功能描述:BOARD EVALUATION FOR LMK02000 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:PowerWise® 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| LMK02000EVAL-2 | 功能描述:时钟和定时器开发工具 LMK02000 EVAL BOARD W/O VCXO RoHS:否 制造商:Texas Instruments 产品:Evaluation Modules 类型:Clock Conditioners 工具用于评估:LMK04100B 频率:122.8 MHz 工作电源电压:3.3 V |
| LMK02000ISQ | 制造商:Texas Instruments 功能描述:Clock Conditioner 48-Pin LLP EP T/R |
| LMK02000ISQ/NOPB | 功能描述:时钟合成器/抖动清除器 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 |
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