CYW4343X
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Algorithms to maximize throughput performance in the presence of Bluetooth signals.
Automatic gain control scheme for blocking and nonblocking application scenarios for cellular applications.
Closed-loop transmit power control.
Designed to meet FCC and other regulatory requirements.
Support for 2.4 GHz Broadcom TurboQAM data rates and 20 MHz channel bandwidth.
Figure 27. WLAN PHY Block Diagram
CCK/DSSS
Demodulate
Filters
and
Radio
Comp
Frequency
and Timing
Synch
Descramble
and
Deframe
OFDM
Demodulate
Viterbi
Decoder
Carrier Sense,
AGC, and Rx
FSM
Buffers
Radio
Control
Block
MAC
Interface
FFT/IFFT
AFE
and
Radio
Modulation
and Coding
Tx FSM
Frame and
Scramble
Filters and
Radio Comp
Modulate/
Spread
PA Comp
COEX
The PHY is capable of fully calibrating the RF front-end to extract the highest performance. On power-up, the PHY performs a full
calibration suite to correct for IQ mismatch and local oscillator leakage. The PHY also performs periodic calibration to compensate
for any temperature related drift, thus maintaining high-performance over time. A closed-loop transmit control algorithm maintains
the output power at its required level and can control TX power on a per-packet basis.
Document No. 002-14797 Rev. *H
Page 37 of 128
CYPRESS [ CYPRESS ]
