ZL50051 ZARLINK [Zarlink Semiconductor Inc], ZL50051 Datasheet - Page 17

• Manufacturer Part Number: ZL50051
• Description: 8 K Channel Digital Switch with High Jitter Tolerance, Single Rate (8 or 16 Mbps), and 64 Inputs and 64 Outputs
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

1.0
The ZL50051/3 has a maximum capacity of 8,192 input channels and 8,192 output channels. This can be
calculated from the two modes of operation:
1. 64 input streams (32 Backplane, 32 Local) at 8.192 Mbps (128 channels per stream), and 64 output streams (32
2. 32 input streams (32 Backplane, 32 Local) at 16.384 Mbps (256 channels per stream), and 32 output streams
A typical mode of operation is to separate the input and output streams to form a unidirectional switch, as shown in
Figure 4 below.
In this system, the Backplane and Local input streams are combined, and the Backplane and Local output streams
are combined, so that the switch appears as a 64 input stream by 64 output stream switch. This gives the maximum
8,192 x 8,192 channel capacity.
Often a system design needs to differentiate between a Backplane and a Local side, or it needs to put the switch in
a bi-directional configuration. In this case, the ZL50051/3 can be used as shown in Figure 5 to give 4,096 x 4,096
channel bi-directional capacity.
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, e.g., Backplane input to Local output switching.
Backplane, 32 Local) at 8.192 Mbps (128 channels per stream)
(32 Backplane, 32 Local) at 16.384 Mbps (256 channels per stream)
Unidirectional and Bi-directional Switching Applications
BACKPLANE
INPUT
Figure 4 - 8,192 x 8,192 Channels (8 Mbps), Unidirectional Switching
Figure 5 - 4,096 x 4,096 Channels (8 Mbps), Bi-directional Switching
32 streams
32 streams
32 streams
BSTi0-31
32 streams
BSTo0-31
BSTi0-31
LSTi0-31
Zarlink Semiconductor Inc.
ZL50051/3
ZL50051/3
ZL50051/3
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32 streams
32 streams
LSTo0-31
32 streams
LSTi0-31
32 streams
BSTo0-31
LSTo0-31
OUTPUT
LOCAL
Data Sheet