CYW43362
■
■
■
■
Automatic gain control scheme for blocking and non blocking application scenario for cellular applications.
Closed loop transmit power control
Supports per packet Rx Antenna diversity.
Designed to meet FCC and other regulatory requirements.
Figure 18. 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 to required level with capability control Tx power on a per packet basis.
One of the key feature of the PHY is two space-time stream receive capability. The STBC scheme can obtain diversity gains by using
multiple transmit antennas in AP (Access Point) in a fading channel environment, without increasing the complexity at the STA.
Details of the STBC receive are shown in the block diagram in Figure 19 on page 28.
Document No. 002-14779 Rev. *G
Page 27 of 60
CYPRESS [ CYPRESS ]
