參數(shù)資料
型號(hào)： HFA3860
廠商： Intersil Corporation
英文描述： 3.3V 288-mc CPLD
中文描述： 11 Mbps的直接序列擴(kuò)頻基帶處理器
文件頁(yè)數(shù)： 29/40頁(yè)
文件大?。?/td> 250K
代理商： HFA3860
4-29
CONFIGURATION REGISTER 7 ADDRESS (1Ch) SCRAMBLER TAPS
Bit 7
0 = Normal, RX_PE Enables/Disables the internal receive clock. I = Internal receive clock is always enabled.
Bits 6:0
This register is used to configure the transmit scrambler with a 7-bit polynomial tap configuration. The transmit scrambler is
a 7-bit shift register, with 7 configurable taps. A logic 1 is the respective bit position enables that particular tap. The example
below illustrates the register configuration for the polynomial F(x) = 1 + X
-4
+X
-7
. Each clock is a shift left.
LSB
Bits (6:0)
6 5 4 3 2 1 0
X
-7
X
-6
X
-5
X
4
X
-3
X
-2
X
-1
Term
Scrambler Taps
F(x) = 1 + X
-4
+X
-7
1 0 0 1 0 0 0
CONFIGURATION REGISTER 8 ADDRESS (20h) SQ1 ACQ THRESHOLD (HIGH)
Bits 0 - 7
This control register contains the upper byte bits (8 - 14) of the bit sync amplitude signal quality threshold used for acquisition.
This register combined with the lower byte represents a 15-bit threshold value for the bit sync amplitude signal quality
measurements made during acquisition at each antenna dwell. This threshold comparison is added with the SQ2 threshold
in registers 10 and 11 for acquisition. A lower value on this threshold will increase the probability of detection and the
probability of false alarm.
CONFIGURATION REGISTER 9 ADDRESS (24h) SQ1 ACQ THRESHOLD (LOW)
Bits 0 - 7
This control register contains the lower byte bits (0 - 7) of the bit sync amplitude signal quality threshold used for acquisition.
This register combined with the upper byte represents a 15-bit threshold value for the bit sync amplitude signal quality
measurement made during acquisition at each antenna dwell.
CONFIGURATION REGISTER 10 ADDRESS (28h) SQ2 ACQ THRESHOLD (HIGH)
Bits 0 - 7
This control register contains the upper byte bits (8-15) of the carrier phase variance threshold used for acquisition. This
register combined with the lower byte represents a 16-bit threshold value for carrier phase variance measurement made
during acquisition at each antenna dwell and is based on the choice of the best antenna. This threshold is used with the bit
sync threshold in registers 8 and 9 to declare acquisition. A higher value in this threshold will increase the probability of
acquisition and false alarm.
CONFIGURATION REGISTER 11 ADDRESS (2Ch) SQ2 ACQ THRESHOLD (LOW)
Bits 0 - 7
This control register contains the lower byte bits (0-7) of the carrier phase variance threshold used for acquisition.
CONFIGURATION REGISTER 12 ADDRESS (30h) SQ1 CCA THRESHOLD (HIGH)
Bits 0 - 7
This control register contains the upper byte bits (8 - 14) of the bit sync amplitude signal quality threshold used for CCA
estimation. This register combined with the lower byte represents a 15-bit threshold value for the bit sync amplitude signal
quality measurement made during acquisition on CCA antenna dwell. A lower value on this threshold will increase the
probability of detection and the probability of false alarm. Set the threshold according to instructions in the text.
CONFIGURATION REGISTER 13 ADDRESS (34h) SQ1 CCA THRESHOLD (LOW)
Bits 0 - 7
This control register contains the lower byte bits (0 - 7) of the bit sync amplitude signal quality threshold used for CCA. This
register combined with the upper byte represents a 15-bit threshold value for the bit sync amplitude signal quality
measurement made during acquisition on CCA antenna dwell.
HFA3860
相關(guān)PDF資料
PDF描述
HFA3860IV 11 Mbps Direct Sequence Spread Spectrum Baseband Processor
HFA3860IV96 11 Mbps Direct Sequence Spread Spectrum Baseband Processor
HFA3861A Direct Sequence Spread Spectrum Baseband Processor(直接序列擴(kuò)頻基帶處理器)
HFA3861B Direct Sequence Spread Spectrum Baseband Processor(直接序列擴(kuò)譜基帶處理器)
HFA3861 Direct Sequence Spread Spectrum (DSSS) baseband processor(直接序列擴(kuò)頻基帶處理器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HFA3860A 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband
HFA3860AEVAL1 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述:
HFA3860AIV 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband
HFA3860AIV WAF 制造商:Harris Corporation 功能描述:
HFA3860AIV96 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband
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