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參數(shù)資料
| 型號： | LMX2515LQX0701/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 26 MHz, QCC28 |
| 封裝： | 5 X 5 MM, 0.75 MM HEIGHT, LLP-28 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 231K |
| 代理商： | LMX2515LQX0701/NOPB |
Programming Description
GENERAL PROGRAMMING INFORMATION
The serial interface has a 24-bit shift register to store the incoming data bits temporarily. The incoming data is first loaded into the
shift register from MSB to LSB. The data is shifted at the rising edge of the clock signal. When the latch enable signal transitions
from LOW to HIGH, the data stored in shift register is transferred to the proper register depending on the address bit setting. The
selection of the particular register is determined by the control bits indicated in boldface text.
At initial start-up, the MICROWIRE loading requires three default words (registers R2, loaded first, to R0, loaded last). After the
device has been initially programmed, the RF VCO frequency can be changed using a single register (R0).
The control register content map describes how the bits within each control register are allocated to the specific control functions.
COMPLETE REGISTER MAP
Register
MSB
SHIFT REGISTER BIT LOCATION
LSB
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9876
5
4
3
2
1
0
R0
(Default)
RX/
TX
RF_
PD
HS
0
RF_
SEL
RF_B
[3:0]
RF_A
[2:0]
RF_FN
[9:0]
00
R1
(Default)
SPI_
DEF
0
10
01010000
0
010LDOB_
CRL
[1:0]
OSC_
FREQ
[1:0]
01
R2
(Default)
1
0
1
00001111
0
0000
0
1
10
R3
1
0
11010000
0
0000
0
1
01
1
R4
0
01110100
0
1100
1
0
011
1
R5
0
00000000
0
0000
0
0
111
1
Note: R0 control register will be used when hot start frequency change.
Note: Boldface text represent address bits.
LMX2515
www.national.com
11
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| LMX25221635EVAL/NOPB | 功能描述:EVALUATION BOARD FOR LMX2522XXXX RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:PLLatinum™ 標準包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| LMX2522LQ1635 | 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 |
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