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HFA3824AIV Просмотр технического описания (PDF) - Intersil
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HFA3824AIV
Direct Sequence Spread Spectrum Baseband Processor
Intersil
HFA3824AIV Datasheet PDF : 40 Pages
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V
DD
(ANALOG)
(10, 18, 20)
HFA3824A
GND (ANALOG)
(11, 15, 19)
V
DD
(DIGITAL)
(7, 21, 29, 42)
GND (DIGITAL)
(6, 22, 31, 41)
I
IN
(12)
Q
IN
(13)
REF
2V
1.75V
V
REFP
(16)
(MAX)
V
REFN
(17)
0.25V
(MIN)
AGC (26)
RSSI (14)
ANTSEL (27)
I
OUT
(48)
Q
OUT
(47)
VR3+
3-BIT
A/D
3
PN CODE
11 TO 16-BIT
3-BIT
A/D 3
VR3-
A/D REFERENCE
AND
LEVEL ADJUST.
RSSI
REF
6-BIT
A/D
ANALOG
DE-SPREADER/ACQUISITION
MF CORRELATOR
11 TO 16-BIT
8
MF CORRELATOR
11 TO 16-BIT
8
MAG. /
PHASE
AND
TIMING
DISTRIB.
8
BIT
SYNC
PHASE
ROTATE
PSK
DEMOD
DIFF
DECODER
CLEAR CHANNEL
ASSESSMENT/
SIGNAL QUALITY
NCO
PHASE
ERROR
LEAD
/LAG
FILTER
d(t)
Z
-1
d(t-1)
SIGNAL
QUALITY
AND
RSSI
DPSK DEMOD
AND AFC
XOR
XOR
XOR
DPSK MODULATOR
I
CLK
DIFFERENTIAL
ENCODER
b(t)
Z
-1
b(t-1)
XOR
Q
MUX CLK
FOR DQPSK
I CH ONLY FOR DBPSK
RX_DATA
DESCRAMBLER
CODE
TX_DATA
SCRAMBLER
(36) RXCLK
(32) CCA
(33) RX_PE
(35) RXD
(34) MD_RDY
(5) TX_RDY
(4) TXCLK
(3) TXD
(2) TX_PE
PN GENERATOR
CHIP RATE
SPREADER
PN CODE
11 TO 16-BIT
TIMING
GENERATOR
MCLK
TEST PORT
(25) SD
(24) SCLK
(23) AS
(8) R/W
(9) CS
(28)
RESET
(30)
MCLK
(1) (37) (38) (39) (40) (43) (44) (45) (46)
TEST_CK
FIGURE 1. DSSS BASEBAND PROCESSOR
2-104
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