công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

LMX1601 bảng dữ liệu(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LMX1601
Giải thích chi tiết về linh kiện  PLLatinum??Low Cost Dual Frequency Synthesizer
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMX1601 bảng dữ liệu(HTML) 6 Page - National Semiconductor (TI)

Back Button LMX1601 Datasheet HTML 2Page - National Semiconductor (TI) LMX1601 Datasheet HTML 3Page - National Semiconductor (TI) LMX1601 Datasheet HTML 4Page - National Semiconductor (TI) LMX1601 Datasheet HTML 5Page - National Semiconductor (TI) LMX1601 Datasheet HTML 6Page - National Semiconductor (TI) LMX1601 Datasheet HTML 7Page - National Semiconductor (TI) LMX1601 Datasheet HTML 8Page - National Semiconductor (TI) LMX1601 Datasheet HTML 9Page - National Semiconductor (TI) LMX1601 Datasheet HTML 10Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 14 page
background image
1.0 Functional Description (Continued)
the phase detector inputs is less than 15 ns for 4 consecutive
comparison cycles. The lock detect output is low when the
error between the phase detector outputs is more than 30 ns
for one comparison cycle. The lock detect output is always
low when the PLL is in power down mode. For further de-
scription see Programming Description 2.5.
1.9
POWER CONTROL
Each PLL is individually power controlled by the device EN
pin. The EN
MAIN controls the Main PLL, and the ENAUX con-
trols the Aux PLL. Activation of EN = LOW (power down)
condition results in the disabling of the respective N and R
counters and de-biasing of their respective fin inputs (to a
high impedance state). The reference oscillator input block
powers down and the OSC
IN pin reverts to a high impedance
state only when both EN pins are LOW. Power down forces
the respective charge pump and phase comparator logic to a
TRI-STATE condition as well as disabling the bandgap refer-
ence block. Power up occurs immediately when the EN pin is
brought high. Power up sequence: Bandgap and Oscillator
blocks come up first, with the remaining PLL functions be-
coming active approx. 1 µs later. All programming informa-
tion is retained internally in the chip when in power down
mode. The MICROWIRE control register remains active and
capable of loading and latching in data during power down
mode.
2.0
Programming Description
2.1
MICROWIRE INTERFACE
The descriptions below detail the 18-bit data register loaded through the MICROWIRE Interface. The 18-bit shift register is used
to program the 12-bit Main and Aux R counter registers and the 16-bit Main and Aux N counter registers. The shift register con-
sists of a 16-bit DATA field and a 2-bit control (CTL [1:0]) field as shown below. The control bits decode the internal register ad-
dress. On the rising edge of LE, data stored in the shift register is loaded into one of the 4 appropriate latches (selected by ad-
dress bits). Data is shifted in MSB first.
MSB
LSB
DATA [15:0]
CTL [1:0]
18
2
1
0
2.1.1
Register Location Truth Table
When LE transitions high, data is transferred from the 18-bit shift register into one of the 4 appropriate internal latches depending
upon the state of the control (CTL) bits. The control bits decode the internal register address
CTL [1:0]
DATA Location
0
0
AUX_R Register
0
1
AUX_N Register
1
0
MAIN_R Register
1
1
MAIN_N Register
2.1.2
Register Content Truth Table
First Bit
SHIFT REGISTER BIT LOCATION
Last Bit
17
16
15
14
13
12
11
10
9876543210
AUX_R
FoLD
AUX_R_CNTR
0
0
AUX_N
AUX_B_CNTR
AUX_A_CNTR
0
1
MAIN_R
CP_WORD
MAIN_R_CNTR
1
0
MAIN_N
MAIN_B_CNTR and MAIN_A_CNTR
1
1
2.2
PROGRAMMABLE REFERENCE DIVIDERS
2.2.1
AUX_R Register
If the Control Bits (CTL [1:0]) are 0 0 when LE transitions high, data is transferred from the 18-bit shift register into a latch which
sets the Aux PLL 12-bit R counter divide ratio. The divide ratio is programmed using the bits AUX_R_CNTR as shown in table
2.2.3. The divider ratio must be
≥ 2. The FoLD word bits controls the multifunction FoLD output as described in section in 2.5.
First Bit
SHIFT REGISTER BIT LOCATION
Last Bit
17
16
15
14
13
12
11
10
9876543210
AUX_R
FoLD[3:0]
AUX_R_CNTR[11:0]
0
0
www.national.com
6


Số phần tương tự - LMX1601

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
National Semiconductor ...
LMX1601 NSC-LMX1601 Datasheet
628Kb / 17P
   PLLatinum??Low Cost Dual Frequency Synthesizer
logo
Texas Instruments
LMX1601 TI1-LMX1601 Datasheet
414Kb / 18P
[Old version datasheet]   LMX1600 2.0 GHz/500 MHz, LMX1601 1.1 GHz/500 MHz, LMX1602 1.1 GHz/1.1 GHz PLLatinum??Low Cost Dual Frequency Synthesizer
LMX1601TMX TI1-LMX1601TMX Datasheet
414Kb / 18P
[Old version datasheet]   LMX1600 2.0 GHz/500 MHz, LMX1601 1.1 GHz/500 MHz, LMX1602 1.1 GHz/1.1 GHz PLLatinum??Low Cost Dual Frequency Synthesizer
More results

Mô tả tương tự - LMX1601

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
National Semiconductor ...
LMX1600 NSC-LMX1600_05 Datasheet
628Kb / 17P
   PLLatinum??Low Cost Dual Frequency Synthesizer
logo
Texas Instruments
LMX2541 TI1-LMX2541 Datasheet
1Mb / 70P
[Old version datasheet]   Ultra-Low Noise PLLatinum Frequency Synthesizer
logo
National Semiconductor ...
LMX2335L NSC-LMX2335L Datasheet
542Kb / 22P
   PLLatinum??Low Power Dual Frequency Synthesizer for RF Personal Communications
LMX2330L NSC-LMX2330L Datasheet
496Kb / 21P
   PLLatinum??Low Power Dual Frequency Synthesizer for RF Personal Communications
LMX2525 NSC-LMX2525 Datasheet
237Kb / 17P
   PLLatinum Dual Frequency Synthesizer System with Integrated VCOs
LMX2335 NSC-LMX2335 Datasheet
393Kb / 18P
   PLLatinum??Dual Frequency Synthesizer for RF Personal Communications
logo
Texas Instruments
LMX2485 TI1-LMX2485_16 Datasheet
1Mb / 46P
[Old version datasheet]   3-GHz Delta-Sigma Low-Power Dual PLLatinum Frequency Synthesizer
logo
National Semiconductor ...
LMX2330A NSC-LMX2330A Datasheet
392Kb / 17P
   PLLatinum??Dual Frequency Synthesizer for RF Personal Communications
LMX2370 NSC-LMX2370 Datasheet
217Kb / 16P
   PLLatinum??Dual Frequency Synthesizer for RF Personal Communications
logo
Texas Instruments
LMX2335 TI-LMX2335 Datasheet
437Kb / 19P
[Old version datasheet]   PLLatinum Dual Frequency Synthesizer for RF Personal Communications
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com