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參數資料
型號: L64781
廠商: LSI CORP
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝: PLASTIC, QFP-100
文件頁數: 161/164頁
文件大?。?/td> 2003K
代理商: L64781
5-26
Registers
If the loop stalls, the integrator inside the chip keeps
its internal value constant, enabling the user to set the
frequency offset directly from the software (using the
AFC_INIT_FREQ register).
The initial value of AFC_STALL is 0.
AFC_POL
AFC VCO Polarity
D3 R/W
This bit selects the polarity of the external VCO.
Positive polarity: The output frequency of the external
down-converter increases with increasing voltage
from the pin AFCOUT of the L64781.
Negative polarity: The output frequency of the
external down-converter decreases with increasing
voltage from the pin AFCOUT of the L64781.
The initial value of AFC_POL is 0.
AFC_SENSITIVITY
AFC Loop Gain
D[2:0] R/W
These bits adjust the loop lter AFC gain. This value is
set according to the sensitivity of the AFC input of the
external down-converter.
AFC_STALL
Denition
0
Working mode
1
Stall mode
AFC_POL
Denition
0
Positive Polarity
1
Negative Polarity
AFC_SENSITIVITY[2:0]
Denition
00
0
00
1
01
0
01
1
10
0
10
1
11
0
11
1
K
SENS
1.52
5
×10
K
SENS
3
5
×10
K
SENS
6
5
×10
K
SENS
1.22
4
×10
K
SENS
2.44
4
×10
K
SENS
4.88
4
×10
K
SENS
9.8
4
×10
K
SENS
1.95
3
×10
l64781.book Page 26 Friday, January 19, 2001 1:28 PM
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相關代理商/技術參數
參數描述
L64782 制造商:未知廠家 制造商全稱:未知廠家 功能描述:L64782 Single-Chip COFDM Receiver
L6480 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:The L6480, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping.
L64801GC-20 制造商:未知廠家 制造商全稱:未知廠家 功能描述:32-Bit Microprocessor
L64801GC-25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:32-Bit Microprocessor
L64801GM-20 制造商:未知廠家 制造商全稱:未知廠家 功能描述:32-Bit Microprocessor
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