ZL50063 Data Sheet
14
Zarlink Semiconductor Inc.
1.0 Unidirectional and Bi-directional Switching Applications
The ZL50063 has a maximum capacity of 16,384 input channels and 16,384 output channels. This is calculated
from the number of streams and channels: 32 input streams (16 Backplane, 16 Local) at 32.768Mbps and 32 output
streams (16 Backplane, 16 Local) at 32.768Mbps, with each stream providing 512 channels.
A typical mode of operation is to separate the input and output streams to form a unidirectional switch, as shown in
Figure 3 below.
Figure 3 - 16,384 x 16,384 Channels (32Mbps), Unidirectional Switching
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 32 input stream by 32 output stream switch. This gives the maximum
16,384 x 16,384 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 ZL50063 can be used as shown in Figure 4 to give 8,192 x 8,192
channel bi-directional capacity.
Figure 4 - 8,192 x 8,192 Channels (32Mbps), Bi-directional Switching
In this system setup, the chip has a capacity of 8,192 input channels and 8,192 output channels on the Backplane
side, as well as 8,192 input channels and 8,192 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.
1.1 Flexible Configuration
The ZL50063 can be configured as an 16K by 16K non-blocking unidirectional digital switch, a 8K by 8K
non-blocking bi-directional digital switch, or as a blocking switch with various switching capacities.
ZL50063
16 streams
16 streams
16 streams
16 streams
BSTi0-15
LSTi0-15
BSTo0-15
LSTo0-15
INPUT
OUTPUT
ZL50063
16 streams
16 streams
16 streams
16 streams
BSTi0-15
BSTo0-15
LSTo0-15
LSTi0-15
BACKPLANE
LOCAL
