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參數(shù)資料
| 型號： | LMX2322 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | PLLatinumTM 2.0 GHz Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLLatinumTM 2.0千兆赫頻率合成射頻個人通信 |
| 文件頁數(shù)： | 7/14頁 |
| 文件大?。?/td> | 227K |
| 代理商： | LMX2322 |
LMX2322
Advance Information
Rev 1.6
9/24/1998
7
appropriate latches (selected by address bits). A complete programming description is included in the following
sections.
Power Control
1.7
The PLL can be power controlled in two ways. The first method is by setting the CE pin LOW. This
asynchronously powers down the PLL and TRI-STATEs the charge pump output, regardless of the PWDN bit
status. The second method is by programming through MICROWIRE, while keeping the CE HIGH.
Programming the PWDN bit in the N register HIGH (CE=HIGH) will disable the N counter and de-bias the fin
input (to a high impedance state). The R counter functionality also becomes disabled. The reference oscillator
block powers down when the power down bit is asserted. The OSCin pin reverts to a high impedance state
when this condition exists. Power down forces the charge pump and phase comparator logic to a TRI-STATE
condition. A power down counter reset function resets both N and R counters. Upon powering up the N counter
resumes counting in "close" alignment with the R counter (The maximum error is one prescaler cycle). The
MICROWIRE control register remains active and capable of loading and latching in data during all of the power
down modes.
相關(guān)PDF資料 |
PDF描述 |
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| LMX2332LSLDX | PLLatinumTM Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2330LSBX | PLLatinumTM Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2330LSLDX | PLLatinumTM Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331LSLDX | PLLatinumTM Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2335 | PLLatinum Dual Frequency Synthesizer for RF Personal Communications(PLLatinum技術(shù)用于射頻個人通訊的雙通道頻率合成器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2322 WAF | 制造商:Texas Instruments 功能描述: |
| LMX2322SLBX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LMX2323 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum? 2.0 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2323 WAF | 制造商:Texas Instruments 功能描述: |
| LMX2323TMX | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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