CN8223 Datasheet, PDF (35/161 Pages) Conexant Systems, Inc – ATM Transmitter/Receiver with UTOPIA Interface

2
2.0 Functional Description
This chapter describes the CN8223 architecture and functional blocks. Figure 2-1
and Figure 2-2 illustrates detailed signal paths of the receiver and transmitter.
Figure 2-1. CN8223 Receiver Block Diagram
Clock, Sync, Serial Data
Serial
Bipolar
Data
Serial
NRZ
Data
MUX
DS-3/G.751
E3 Framer
External
Framer
Mode
MUX
Serial/
Parallel
Enable
B3ZS/HDB3
Parallel Input
Octet, Clock
STS-1/
STS-3c/
G.832
STM-1
Serial/Parallel
STS-1/
STS-3c/
STM-1
G.832
Framer
Octets
MUX
100 Mbps
TAXI Interface
Figure 2-2. CN8223 Transmitter Block Diagram
PHY
Mode
Overhead Output
PLCP
Framer
HEC
Align.
Framer
MUX
ATM
Cell
Receiver
Alignment
Mode
ATM
Cell
Gen.
Overhead Input
PLCP
Gen.
STS-1/
STS-3c/
STM-1
G.832
Gen.
DS3/
G.751 E3
Gen.
MUX
B3ZS/
HDB3
Encode
Serial/
Parallel
Data Out
MUX
100046C
Conexant
2-1