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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： | 4/18页 |
| 文件大小： | 377K |
| 代理商： | LMK02000 |
2.2 REGISTER R0 to R7
Registers R0 through R7 control the eight clock output pins. Register R0 controls CLKout0, Register R1 controls CLKout1, and so
on. Aside from this, the functions of these bits are identical. The X in CLKoutX_MUX, CLKoutX_DIV, CLKoutX_DLY, and
CLKoutX_EN denote the actual clock output which may be from 0 to 7.
2.2.1 CLKoutX_MUX[1:0] -- Clock Output Multiplexers
These bits control the Clock Output Multiplexer for each pin. Changing between the different modes changes the blocks in the
signal path and therefore incurs a delay relative to the bypass mode. The different MUX modes and associated delays are listed
below.
CLKoutX_MUX[1:0]
Mode
Added Delay Relative to Bypass Mode
0
Bypassed
0 ps
1
Divided
100 ps
2
Delayed
400 ps
(In addition to the programmed delay)
3
Divided and Delayed
500 ps
(In addition to the programmed delay)
2.2.2 CLKoutX_DIV[7:0] -- Clock Output Dividers
These bits control the clock output divider value. In order for these dividers to be active, the respective CLKoutX_MUX (See 2.2.1)
bit must be set to either "Divided" or "Divided and Delayed" mode. After all the dividers are programed, the SYNC* pin must be
used to ensure that all edges of the clock output pins are aligned (See 1.7). The Clock Output Dividers follow the Input Divider so
the final clock divide for an output is Input Divider x Clock Output Divider. By adding the divider block to the output path a fixed
delay of approximately 100 ps is incurred.
The actual Clock Output Divide value is twice the binary value programmed as listed in the table below.
CLKoutX_DIV[7:0]
Clock Output Divider value
0
Invalid
0
1
2
0
1
0
4
0
1
6
0
1
0
8
0
1
0
1
10
.
...
1
510
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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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