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MT90871AV Datasheet(PDF) 8 Page - Zarlink Semiconductor Inc |
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MT90871AV Datasheet(HTML) 8 Page - Zarlink Semiconductor Inc |
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8 / 65 page  MT90871 Data Sheet 8 Zarlink Semiconductor Inc. 1.0 Bidirectional and Unidirectional Applications The MT90871 has a maximum capacity of 8,192 input channels and 8,192 output channels. This is calculated from the maximum number of streams and channels: 32 input streams (16 Backplane, 16 Local) at 16.384Mb/s and 32 output streams (16 Backplane, 16 Local) at 16.384Mb/s. One typical mode of operation is to separate the Backplane and Local sides, as shown in Figure 3 below. Figure 3 - 4,096 x 4,096 Channels (16Mb/s), Bidirectional Switching In this system setup, the chip has a capacity of 4,096 input channels and 4,096 output channels on the Backplane side as well as 4,096 input channels and 4,096 output channels on the Local side. Note that some or all of the output channels on one side can come from the other side, i.e. Backplane input to Local output switching. Often a system design does not need to differentiate between Backplane and Local side, and merely needs maximum switching capacity. In this case, the MT90871 can be used as shown in Figure 4 to give the full 8,192 x 8,192 channel capacity. Figure 4 - 8,192 x 8,192 Channels (16Mb/s), Unidirectional Switching In this system, the Backplane and Local inputs and outputs are combined and the switch appears as a 32 stream input by 32 stream output switch. This style of operation is similar to older switch designs, such as the MT90826. 1.1 Flexible Configuration The F8KDX can be configured as a 4K by 4K non-blocking bi-directional digital switch, an 8K by 8K unidirectional non-blocking switch, and as a blocking switch with various switching capacities. 1.1.1 A. Blocking Bi-directional Configuration (Typical System Configuration) • 4,096-channel x 4,096-channel non-blocking switching from backplane to local streams • 4,096-channel x 4,096-channel non-blocking switching from local to backplane streams • 4,096-channel x 4,096-channel non-blocking switching from backplane input to backplane output streams • 4,096-channel x 4,096-channel non-blocking switching from local input to local output streams MT90871 16 streams 16 streams 16 streams 16 streams BSTi0-15 BSTo0-15 LSTo0-15 LSTi0-15 BACKPLANE LOCAL MT90871 16 streams 16 streams 16 streams 16 streams BSTi0-15 LSTi0-15 BSTo0-15 LSTo0-15 INPUT OUTPUT |
Similar Part No. - MT90871AV |
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Similar Description - MT90871AV |
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