MT90883 Datasheet, PDF (31/97 Pages) Zarlink Semiconductor Inc – TDM to Packet Processors

MT90880/1/2/3
Data Sheet
Packet Interface to WAN Access Interface
Incoming data is received by the MAC, and its destination address is checked. Packets intended for this device
are passed to the packet receive block for placing in external memory, while the header is classified to
determine the appropriate destination. A pointer to the packet is passed to the queue manager to be placed on
the correct queue as indicated by the classification result. The WAN Transmit block retrieves the data from
packet memory, and directs it towards the appropriate timeslots on the WAN interface.
Local TDM
Interface Host Interface
Packet Memory
Figure 12 - Packet to WAN Data Flow
Data Flow
Control Flow
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Zarlink Semiconductor Inc.