PXB4340E Datasheet, PDF (18/185 Pages) Infineon Technologies AG – ICs for Communications

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The PXB 4340 AOP is located at the ports of a switch so that each ATM cell passes two
PXB 4340 AOP devices, one at the ingress port and one at the egress port.
The PXB 4340 AOP assumes that all connections are set-up bi-directional with the same Local
Connection Identifier LCI in both directions. In the Infineon Technologies ATM chip set
environment (VHH ILJXUHV   DQG ILJXUH ) the LCI is provided by the PXB 4350 ALP and
contains VPI, VCI and PHY information. The PXB 4340 AOP uses pointers to define a
connection as VPC or VCC (VHH ILJXUH ); the PHY number is not evaluated. If the PXB 4340
AOP is not used together with the PXB 4350 ALP it can operate on VPI or VCI identifiers only.
In these cases the OAM functionality is reduced accordingly.
(optional) (optional) (optional)
Conn. Pol.
RAM RAM
ARC
(mandatory)
Conn.
RAM
UTOPIA
UTOPIA
UTOPIA
PHYs
upstream:
Address reduction
Policing
downstream:
Header translation e.g.
PXB 4350 E
ALP
PXB 4340 E
AOP
ATM
switch
core
Conn. RAM = connection data RAM
Pol. RAM = policing data RAM
ARC = address reduction circuit
Conn.
RAM
(mandatory)
Conn.
RAM
(mandatory)
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Data Sheet
1-18
04.2000