pxb4330 Infineon Technologies Corporation, pxb4330 Datasheet - Page 23

• Manufacturer Part Number: pxb4330
• Description: Ics For Communications
• Manufacturer: Infineon Technologies Corporation

Alternatively, the single-board solution could be used as a multiplexer connecting many
subscriber lines to one access line.
If full OAM functionality is not needed, the PXB 4340 E AOP chip could be omitted.
Minimum OAM and multicast functionality are also built into the PXB 4350 E ALP. The
Address Reduction Circuit (ARC) could be omitted if the built-in address reduction is
sufficient.
Figure 1-5
In addition to the two applications illustrated in Figure 1-4 and Figure 1-5, many other
combinations of the chip set are possible in the design of ATM switches. Various
combinations of functionality are possible because of the modular design of the chip set.
Address reduction, multicast, policing, redundant switching network, and other functions
can be implemented by appropriate chip combinations. The number of supported
connections scales with the amount of external connection RAM. Policing data RAM can
be omitted if the function is not required. Thus, the functionality and size of an ATM
switch can be tailored exactly to the requirements of the specific application, without
carrying the overhead burden of unnecessary functions.
Data Sheet
Conn. RAM = connection data RAM
Pol. RAM = policing data RAM
Cell RAM = ATM cell storage RAM
ARC
= address reduction circuit
Mini Switch with 622 Mbit/s Throughput
PHYs
UTOPIA
Conn
RAM
.
PXB 4350 E
ALP
Pol.
RAM
Conn.
RAM
ARC
1-23
UTOPIA
PXB 4340 E
AOP
Conn.
RAM
Con
RAM
. n
UTOPIA
Tx
Master
Rx
Master
Point
RAM
PXB 4330 E
ABM
r e
Cell
RAM
Cell
RAM
Tx
Slave
Rx
Slave
PXB 4330
Overview
09.99