CMX7163 QAM Modem
CMX7163
Figure 1 illustrates the overall functionality of the CMX7163, detailing the auxiliary functions. The following
figure expands upon the transmit and receive functions.
Auto Frame
Sync Detect
RSSI
Link Quality
Detect
I
ADC
I
Symbol
De-Mapper
(4-, 16- or
64-QAM)
Raw Mode Data
Channel/Pulse-
shaping Filters
I/Q
Demod
RF Rx
FIFO
CDATA
RDATA
CSN
Buffer
Q
ADC
Channel Decoder:
Error Correct/
Detect
Host
µC
Q
SCLK
IRQN
Coded Mode Data
Coded Mode Data
I
Channel
Coder
I
FIFO
DAC
Symbol
Mapper
(4-, 16- or
64-QAM)
Construct Frame:
Add Preamble,
Framesync and
Tails
Pulse-shaping Filters
Buffer
RF Tx
I/Q Mod
Q
Raw Mode Data
Q
DAC
Figure 2 FI-4.x Block Diagram – I/Q Tx and Rx
2014 CML Microsystems Plc
Page 10
D/7163_FI-4.x/12
CMLMICRO [ CML MICROCIRCUITS ]
