ISL3874 Datasheet, PDF (29/33 Pages) Intersil Corporation – Wireless LAN Integrated Medium Access Controller with Baseband Processor with Mini-PCI

RX_IF_DET
RX_IF_AGC
RX-RF-AGC
ANT SEL
RXI
RXQ
V_DD (ANALOG)
ISL3874
GND (ANALOG)
V_DD (DIGITAL)
GND (DIGITAL)
6-BIT
DAC
DIVERSITY
CONTROL
AGC
CONTROL
6-BIT
A/D
6
6-BIT
A/D 6
CLEAR CHANNEL
ASSESSMENT/
SIGNAL QUALITY
CMF
TRAINING
8
PEAK
EXTRACT.
8
BIT
SYNC
DPSK
DEMOD
RX_DATA
DESCRAMBLER
SYMBOL
TRACKING
NCO
EQUAL.
BIAS
ADDER
CCK
CORREL
SYMBOL
DECISION
COHERENT
TIMING
INTEGRATOR
LOOP
FILTER
DECISION FEEDBACK
EQUALIZER
CCA to
MAC
RXD to MAC
RXCLK to MAC
MD_RDY to MAC
ANTSEL
ANTSEL
ANTENNA
SWITCH
CONTROL
RECEIVE
STATE
MACHINE
TIMING
GENERATOR
MCLK
6-BIT
DAC
6-BIT
DAC
TXI
TXQ
RESET RX_PE MCLK
FIGURE 18. DSSS BASEBAND PROCESSOR, RECEIVE SECTION
29