- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358886 > LMX2312U (NATIONAL SEMICONDUCTOR CORP) PLLatinum⑩ Ultra Low Power Frequency Synthesizer for RF Personal Communications PDF資料下載
參數(shù)資料
| 型號： | LMX2312U |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | PLLatinum⑩ Ultra Low Power Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 1200 MHz, QCC20 |
| 封裝： | THIN, CSP-20 |
| 文件頁數(shù)： | 27/29頁 |
| 文件大?。?/td> | 662K |
| 代理商： | LMX2312U |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁當前第27頁第28頁第29頁
3.0 Programming Description
(Continued)
3.2.5 FoLD2,1,0
The FoLD2, FoLD1 and FoLD0 are used to select which signal is routed to FoLD pin.
FoLD Output Truth Table
T[14],R[21],R[20]
T[14]
FoLD2
0
0
0
0
1
1
1
1
R[21]
FoLD1
0
0
1
1
0
0
1
1
R[20]
FoLD0
0
1
0
1
0
1
0
1
FoLD Output State
Disabled (TRI-STATE FoLD)
Lock Detect—Analog (Push/Pull), Reference to V
μc
Lock Detect—Analog (Open Drain)
Reset R and N Dividers and TRI-STATE Charge Pump
Lock Detect—Digital (Push/Pull), Reference to V
μC
R COUNTER Output (Push/Pull), Reference to V
μC
N Counter Output (Push/Pull), Reference to V
μC
Reserved (Do Not Use)
3.3 N REGISTER
The N register contains the PWDN (Power-Down), P (Prescaler), NA_CNTR, and NB_CNTR control words. The detailed
descriptions and programming information for each control word is discussed in the following sections.
Register
Most Significant Bit
21
20
SHIFT REGISTER BIT LOCATION
14
13
12
Least Significant Bit
3
2
19
18
17
16
15
11
10
9
8
7
6
5
4
1
Address
Field
0
0
Data Field
N
PWDN
P
B_CNTR[12:0]
A_CNTR[4:0]
1
3.3.1 PWDN
The PWDN control bit along with CP
_TRI control bit is used to power-down the PLL. The LMX2310/1/2/3U can be synchronous
or asynchronous powered down by first setting the CP
_TRI bit and then setting the PWDN bit. To power up from the synchronous
Power-Down mode, the CP
o
_TRI bit will have to be reset to 0.
Power-Down
N[21]
N[21]
PWDN
0
1
1
R[19]
CP
O
_TRI
0
0
1
Operating Mode
Normal Operation
Power-down (Synchronous)
Power-down (Asynchronous)
3.3.2 P
The LMX2310/1/2/3U contains two dual modulus prescalers. The P control bit is used to set the prescaler value.
Prescaler
N[20]
N[20]
Prescaler Value
LMX2310/1/2U
16/17
32/33
Prescaler Value
LMX2313U
8/9
16/17
0
1
PLL Input Frequency
F
IN
>
1.2 GHz
F
IN
≤
1.2 GHz
F
IN
≤
600 MHz
Allowable Prescaler Values
32/33
16/17 or 32/33
8/9 or 16/17
L
www.national.com
27
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2314 | 1.2 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2314M | 1.2 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2314MX | 1.2 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2315 | Frequency Synthesizer for RF Personal Communications |
| LMX2315TM | Frequency Synthesizer for RF Personal Communications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2312USLDX | 制造商:MAJOR 功能描述: |
| LMX2312USLDX/NOPB | 功能描述:IC FREQ SYNTH 1.2GHZ 20LAMTCSP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標準包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| LMX2313U | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Ultra Low Power Frequency Synthesizer for RF Personal Communications |
| LMX2313USLDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Ultra Low Power Frequency Synthesizer for RF Personal Communications |
| LMX2313USLDX/NOPB | 功能描述:IC FREQ SYNTH 600MHZ 20LAMTCSP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標準包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。