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參數(shù)資料
| 型號： | LMX2434 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | PLLatinum Dual High Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLLatinum雙高頻率合成射頻個人通信 |
| 文件頁數(shù)： | 45/49頁 |
| 文件大?。?/td> | 943K |
| 代理商： | LMX2434 |
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2.0 Programming Description
(Continued)
2.8.2 IF_B[13:0] - IF Synthesizer Programmable Binary Counter (B Counter) (R4[20:7])
The IF_B control word is used to setup the IF synthesizer’s B counter. The B counter is a 14-bit programmable binary counter
used in the programmable feedback divider. The IF_B control word can be programmed to values ranging from 3 to 16383. Divide
ratios less than 3 are prohibited.
Divide
Ratio
3
4
16383
IF_B[13:0]
7
0
0
1
13
0
0
1
12
0
0
1
11
0
0
1
10
0
0
1
9
0
0
1
8
0
0
1
6
0
0
1
5
0
0
1
4
0
0
1
3
0
0
1
2
0
1
1
1
1
0
1
0
1
0
1
2.8.3 IF_P - IF Synthesizer Prescaler Select (R4[22])
The LMX243x IF synthesizer utilizes a selectable dual modulus prescaler. An 8/9 or a 16/17 prescale ratio can be selected.
Control Bit
Register Location
Description
Function
0
1
IF_P
R4[22]
IF Prescaler Select
8/9 Prescaler
Selected
16/17 Prescaler
Selected
2.8.4 IF_PD - IF Synthesizer Powerdown (R4[23])
The IF_PD bit is used to switch the IF PLL between a powered up and powered down mode.
Furthermore, the IF_PD bit operates in conjuction with the IF_CPT bit to set a synchronous or an asynchronous powerdown
mode. Refer to
Section 2.7.4
for more details on how to program the IF_CPT bit.
Control Bit
Register Location
Description
Function
0
1
IF_PD
R4[23]
IF Powerdown
IF PLL Active
IF PLL Powerdown
L
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2434TM | PLLatinum Dual High Frequency Synthesizer for RF Personal Communications |
| LMX2434TMX | PLLatinum Dual High Frequency Synthesizer for RF Personal Communications |
| LMX2430SLEX | PLLatinum Dual High Frequency Synthesizer for RF Personal Communications |
| LMX2430TM | PLLatinum Dual High Frequency Synthesizer for RF Personal Communications |
| LMX2430TMX | PLLatinum Dual High Frequency Synthesizer for RF Personal Communications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2434EVAL | 功能描述:時鐘和定時器開發(fā)工具 LMX2434 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
| LMX2434EVAL/NOPB | 功能描述:時鐘和定時器開發(fā)工具 LMX2434 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
| LMX2434SLEX | 制造商:Texas Instruments 功能描述:PLL Frequency Synthesizer Dual 500MHz to 5000MHz 20-Pin LAM UCSP T/R |
| LMX2434SLEX/NOPB | 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| LMX2434TM | 制造商:Texas Instruments 功能描述:PLL Frequency Synthesizer Dual 500MHz to 5000MHz 20-Pin TSSOP Rail |
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