ISL3873 Datasheet, PDF (28/31 Pages) Intersil Corporation – Wireless LAN Integrated Medium Access Controller with Baseband Processor

ISL3873
RX_IF_DET
RX_IF_AGC
RX_RF_AGC
ANT SEL
RXI
RXQ
V_DDA (ANALOG)
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
CCA to
MAC
(INTERNAL)
8
PEAK
EXTRACT.
8
BIT
SYNC
DPSK
DEMOD
INTERNAL TRANSMIT
AND RECEIVE
SIGNALS TO MAC
RX_DATA
DESCRAMBLER
RXD TO MAC
RXCLK TO MAC
SYMBOL
TRACKING
COHERENT
TIMING
INTEGRATOR
NCO
EQUAL.
BIAS
ADDER
CCK
CORREL
SYMBOL
DECISION
LOOP
FILTER
DECISION FEEDBACK
EQUALIZER
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 19. DSSS BASEBAND PROCESSOR, RECEIVE SECTION
28