MT90880B ZARLINK [Zarlink Semiconductor Inc], MT90880B Datasheet - Page 33

• Manufacturer Part Number: MT90880B
• Description: TDM to Packet Processors
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

PCI Interface to Packet Interface
The host CPU or other devices can use the MT9088x device to send data via the packet network. The data to
be sent is formatted into packets with the appropriate protocols in system memory. The DMA controller in the
MT9088x is programmed to fetch this information, and place it into the appropriate packet queue.
On transmission the packet is retrieved from memory by the Packet Formatter in the normal way, and passed to
the MAC for transmission.
Figure 14 - Packet to WAN Data Flow via Local Resource
Figure 15 - PCI to Packet Data Flow
Local Resource Pool
e.g. DSP pool
Zarlink Semiconductor Inc.
MT90880/1/2/3
Host Processor
Packet Memory
Packet Memory
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Data Flow
Control Flow
Data Flow
Control Flow
Data Sheet