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參數(shù)資料
| 型號： | HFA3861IV96 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Direct Sequence Spread Spectrum Baseband Processor |
| 中文描述： | TELECOM, CELLULAR, BASEBAND CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, PLASTIC, TQFP-64 |
| 文件頁數(shù)： | 16/35頁 |
| 文件大小： | 218K |
| 代理商： | HFA3861IV96 |
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16
PN Correlators Description
There are two types of correlators in the HFA3861 baseband
processor. The first is a parallel matched correlator that
correlates for the Barker sequence used in preamble,
header, and PSK data modes. This PN correlator is
designed to handle BPSK spreading with carrier offsets up
to
±
50ppm and 11 chips per symbol. Since the spreading is
BPSK, the correlator is implemented with two real
correlators, one for the I and one for the Q Channel. The
same Barker sequence is always used for both I and Q
correlators.
These correlators are time invariant matched filters otherwise
known as parallel correlators. They use one sample per chip for
correlation although two samples per chip are processed. The
correlator despreads the samples from the chip rate back to the
originaldatarategiving10.4dBprocessinggainfor11chipsper
bit. While despreading the desired signal, the correlator
spreads the energy of any non correlating interfering signal.
The second form of correlator is the correlator function used
for detection of the CCK modulation. For the CCK modes,
PREAMBLE/HEADER
CRC-16
GENERATOR
TX_AGC_IN (18)
V
REF
(16)
I
REF
(21)
SPARE (39)
(60) CCA
TX_DATA
SCRAMBLER
(58) TXD
P
(52) RXCLK
MODULATOR,
BARKER/CCK
TXI (23, 24)
TXQ (29, 30)
TIMING
GENERATOR
MCLK
(12, 17, 22, 31)
V
DD
(ANALOG)
(2, 8, 37, 41, 57)
V
DD
(DIGITAL)
(9, 15, 20, 25, 28)
GND (ANALOG)
(1, 7, 36, 43, 56)
GND (DIGITAL)
(55) TXCLK
(59) TX_RDY
(62) TX_PE
ANTSEL (40)
(4) SCLK
(3) SD
(64) SDI
(5) R/W
(6) CS
S
P
T
P
(42)
MCLK
T
(45)
T
(44)
(46)
T
(47)
T
(48)
T
(49)
T
(50)
T
(51)
T
TEST PORT
FIGURE 11. DSSS BASEBAND PROCESSOR, TRANSMIT SECTION
TX AGC
CONTROL
TRANSMIT
FILTER
O
T
O
DAC
DAC
TX
STATE
CONTROL
TX_IF_AGC (35)
6-BIT
DAC
REGISTER
6-BIT
ADC
HFA3861
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HFA3863 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband Processor |
| HFA3863IN | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband Processor |
| HFA3863IN96 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Direct Sequence Spread Spectrum Baseband Processor |
| HFA3925 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:null2.4GHz - 2.5GHz 250mW Power Amplifier |
| HFA3925IA | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
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