參數(shù)資料
型號： LMX2372SLBX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： XO, clock
英文描述： PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications
中文描述： PLL FREQUENCY SYNTHESIZER, 1200 MHz, CQCC24
封裝： 3.50 X 4.50 MM, 1 MM HEIGHT, CSP-24
文件頁數(shù)： 10/16頁
文件大?。?/td> 217K
代理商： LMX2372SLBX
2.0 Programming Description
(Continued)
Most Significant Bit
21
20
SHIFT REGISTER BIT LOCATION
13
12
11
10
Data Field
Least Significant Bit
2
1
Address Field
19
18
17
16
15
14
9
8
7
6
5
4
3
0
Aux_N
A
P
Aux_B_CNTR[12:0]
Aux_A_CNTR[4:0]
0
1
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
2.3.2 Main_N Register
If the ADDRESS[1:0] field is set to 1 1, data is transferred from the 22-bit shift register into the Main_N register which sets the
Main PLL’s 18-bit N-counter, prescaler value and power-down bit. The 18-bit N-counter consists of a 5-bit swallow counter,
Main_A_CNTR[4:0], and a 13-bit programmable counter, Main_B_CNTR[12:0]. Serial data format is shown below.
Most Significant Bit
21
20
19
SHIFT REGISTER BIT LOCATION
13
12
11
10
Data Field
Least Significant Bit
2
1
Address Field
18
17
16
15
14
9
8
7
6
5
4
3
0
Main_N
M
P
Main_B_CNTR[12:0]
Main_A_CNTR[4:0]
1
1
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
2.3.3 Feedback Divide Ratio (Main B Counter, Auxiliary B Counter)
Main_B_CNTR[12:0] or Aux_B_CNTR[12:0]
N13
N12
0
0
0
0
1
1
Divide Ratio
3
4
8,191
N17
0
0
1
N16
0
0
1
N15
0
0
1
N14
0
0
1
N11
0
0
1
N10
0
0
1
N9
0
0
1
N8
0
0
1
N7
0
1
1
N6
1
0
1
N5
1
1
1
Note:
B-counter divide ratio must be
≥
3.
2.3.4 Swallow Counter Divide Ratio (Main A Counter, Auxiliary A Counter)
Main_A_CNTR[4:0] or Aux_A_CNTR[4:0]
Main_N3
Main_N2
0
0
1
Divide Ratio
0
1
31
Main_N4
0
0
1
Main_N1
0
0
1
Main_N0
0
1
1
0
0
1
Notes:
A
<
P,
B
>
A.
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相關(guān)PDF資料
PDF描述
LMX2372TMX PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications
LMX2372TM PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications
LMX2377UTMX PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications
LMX2377UTM Enclosed Switches Series LS: Side Rotary with 1.5" to 3.5" Adjustable Length Lever; Nylon Roller; 1NC 1NO SPDT Snap Action, Double Break; 0.5 in - 14NPT conduit; Plug-in
LMX2377USLBX PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LMX2372TM 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications
LMX2372TMX 功能描述:IC FREQ SYNTH DUAL 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)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:*
LMX2377U 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications
LMX2377U WAF 制造商:Texas Instruments 功能描述:
LMX2377USLBX 功能描述:IC FREQ SYNTH DUAL 24LAMINATECSP RoHS:否 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)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:*
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