HSP3824
VDD (ANALOG)
(10, 18, 20)
GND (ANALOG)
(11, 15, 19)
VDD (DIGITAL)
(7, 21, 29, 42)
GND (DIGITAL)
(6, 22, 31, 41)
PN CODE
11 TO 16-BIT
VR3+
DE-SPREADER/ACQUISITION
MF CORRELATOR
11 TO 16-BIT
BIT
SYNC
3-BIT
A/D
(36) RXCLK
8
I
IN (12)
3
3
MAG. /
PHASE
AND
TIMING
DISTRIB.
MF CORRELATOR
11 TO 16-BIT
3-BIT
A/D
Q
IN (13)
8
8
REF
2V
VR3-
VREFP (16)
1.75V
A/D REFERENCE
(MAX)
AND
LEVEL ADJUST.
VREFN (17)
0.25V
(MIN)
DIFF
DECODER
RSSI
REF
CLEAR CHANNEL
ASSESSMENT/
SIGNAL QUALITY
PHASE
ROTATE
PSK
DEMOD
(32) CCA
AGC (26)
PHASE
ERROR
d(t)
Z -1
SIGNAL
QUALITY
AND
6-BIT
A/D
RSSI (14)
RSSI
LEAD
d(t-1)
/LAG
NCO
FILTER
ANALOG
XOR
(33) RX_PE
(35) RXD
ANTSEL (27)
DPSK DEMOD
AND AFC
(34) MD_RDY
DPSK MODULATOR
RX_DATA
DESCRAMBLER
DIFFERENTIAL
ENCODER
CLK
I
CODE
b(t)
b(t-1)
Z -1
(5) TX_RDY
(4) TXCLK
(3) TXD
IOUT (48)
XOR
XOR
TX_DATA
SCRAMBLER
XOR
(2) TX_PE
QOUT (47)
Q
MUX CLK
FOR DQPSK
I CH ONLY FOR DBPSK
PN CODE
11 TO 16-BIT
PN GENERATOR
CHIP RATE
(25) SD
(24) SCLK
(23) AS
(8) R/W
(9) CS
SPREADER
TIMING
GENERATOR
MCLK
TEST PORT
(28)
(30)
(1)
(37) (38) (39) (40) (43) (44) (45) (46)
RESET
MCLK
TEST_CK
FIGURE 1. DSSS BASEBAND PROCESSOR
6
HARRIS [ HARRIS CORPORATION ]
