參數(shù)資料
型號: LMX2377U
廠商: National Semiconductor Corporation
英文描述: PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications
中文描述: PLLatinum⑩超低功耗雙頻率合成射頻個人通信
文件頁數(shù): 36/44頁
文件大小: 3181K
代理商: LMX2377U
2.0 Programming Description
(Continued)
2.4 AUXILIARY R REGISTER
The Aux R register contains the Aux R_CNTR, PD_POL Aux, ID
o
Aux, and TRI-STATE ID
o
Aux control words, in addition to two
bits that compose the F
o
LD control word. The detailed description and programming information for each control word is
discussed in the following sections.
Reg. Most Significant Bit
21
20
SHIFT REGISTER BIT LOCATION
13
12
11
10
Least Significant Bit
3
2
19
18
17
16
15
14
9
8
7
6
5
4
1
0
Data Field
Address
Field
Aux
R
F
o
LD0 F
o
LD2
TRI-
STATE
ID
o
Aux
ID
o
Aux
PD_
POL
Aux
Aux R_CNTR[14:0]
0
0
2.4.1 Aux R_CNTR[14:0]
Aux R[2:16]
The Aux reference divider (Aux R_CNTR) can be programmed to support divide ratios from 2 to 32767. Divide ratios less than
2 are prohibited.
AUXILIARY SYNTHESIZER PROGRAMMABLE REFERENCE DIVIDER (R COUNTER)
Divide Ratio
Aux R_CNTR[14:0]
8
7
0
0
0
0
1
1
14
0
0
1
13
0
0
1
12
0
0
1
11
0
0
1
10
0
0
1
9
0
0
1
6
0
0
1
5
0
0
1
4
0
0
1
3
0
0
1
2
0
0
1
1
1
1
1
0
0
1
1
2
3
32767
2.4.2 PD_POL Aux
The PD_POL Aux bit is used to control the Aux synthesizer’s phase detector polarity based on the VCO tuning characteristics.
AUXILIARY SYNTHESIZER PHASE DETECTOR POLARITY
Aux R[17]
Control Bit
Register Location
Description
Function
0
1
PD_POL Aux
Aux R[17]
Aux Phase Detector
Polarity
Aux VCO Negative
Tuning
Characteristics
Aux VCO Positive
Tuning
Characteristics
Aux VCO Characteristics
20022609
2.4.3 ID
o
Aux
The ID
o
Aux bit controls the Aux synthesizer’s charge pump gain. Two current levels are available.
AUXILIARY SYNTHESIZER CHARGE PUMP CURRENT GAIN
Aux R[18]
Control Bit
Register Location
Description
Function
0
1
ID
o
Aux
Aux R[18]
Aux Charge Pump
Current Gain
LOW
0.95 mA
HIGH
3.80 mA
L
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相關代理商/技術參數(shù)
參數(shù)描述
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:* 供應商設備封裝:* 包裝:*
LMX2377USLEX 功能描述:IC FREQ SYNTH DUAL 20LAMUCSP 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:* 供應商設備封裝:* 包裝:*
LMX2377UTM 功能描述:IC FREQ SYNTH DUAL 20TSSOP 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:* 供應商設備封裝:* 包裝:*
LMX2377UTMX 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