2.0 Circuit Description
CX28394/28395/28398
2.3 System Bus
Quad/x16/Octal—T1/E1/J1 Framers
Figure 2-8. Internally Multiplexed Configuration Examples
Possible Internally Multiplexed
Configurations
4.096 Mbps
8.192 Mbps
Framer 1
Framer 1
Framer 2
Framer 3
Framer 4
Two separte 8.192
Framer 2
In this application, Framers 3 and 4
are used as back-up line interfaces
and are connected to the system bus;
but are disabled.
Mbps buses is the
typical application for
Internally Multiplexed
mode.
Framer 3
Framer 4
8.192 Mbps
8.192 Mbps
Framer 5
Framer 6
Framer 7
Framer 8
Framer 5
Framer 6
Framer 7
Framer 8
In this application, Framer 8 is used as
a back-up line interface and is
connected to the system bus; but is
disabled.
CX28398
CX28398
2.3.4 Receive System Bus
The Receive System Bus (RSB) provides a high-speed, serial interface between
the RCVR and the system bus. The RSB has the following pins:
Pin Name
Function
RSBCKI
RPCMO
Receive System Bus Clock
Receive PCM Data
RFSYNC/RMSYNC
Receive Frame Sync or
Receive Multiframe Sync
Receive Time Slot Indicator or
Receive Datalink Clock
Receive Signaling Data or
Receive Datalink Data
Signaling Freeze
RINDO/RDLCKO
RSIGO/RDLO
SIGFRZ
2-24
Conexant
100054E
CONEXANT [ CONEXANT SYSTEMS, INC ]
