MT90869AG Zarlink, MT90869AG Datasheet - Page 18

• Manufacturer Part Number: MT90869AG
• Description: Switch Fabric 16K x 16K/8K x 8K 1.8V/3.3V 272-Pin BGA Tray
• Manufacturer: Zarlink

Specifications of MT90869AG

• Package: 272BGA
• Number Of Ports: 64
• Fabric Size: 16K x 16K|8K x 8K
• Switch Core: Non-Blocking|Blocking
• Port Speed: 8.192|4.096|2.048 Mbps
• Operating Supply Voltage: 1.8|3.3 V

In this system, the Backplane and Local inputs and outputs are combined so that the switch appears as a 64 stream
input by 64 stream output switch. This style of operation is similar to older switch designs, such as the MT90826.
Note, in either configuration the Backplane may be operated in the 32 Mb/s Mode, providing 512 channels on each
of the 16 available input and output streams (BSTi0-15 and BSTo0-15) operating at a data-rate of 32.768 Mb/s, in
conjunction with the Local streams (LSTi0-31 and LSTo0-31) operated at 16.384 Mb/s. This allows data-rate
conversion between 32.768 Mb/s and 16.384 Mb/s without loss to the switching capacity.
1.1
The F16KDX can be configured as an 8 K by 8 K non-blocking bi-directional digital switch, a 16 K by 16 K
unidirectional non-blocking digital switch, and as a blocking switch with various switching capacities.
A. Non-Blocking Bi-directional Configuration (Typical System Configuration)
•
•
•
•
B. Unidirectional Configuration
Because the input and output drivers are synchronous, the user can combine input backplane streams and input
local streams or output backplane streams and output local streams to increase the total number of input and
output streams of the switch in a unidirectional configuration.
•
C. Blocking Configuration
The F16KDX can be configured as a blocking bi-directional switch if it is an application requirement. For example, it
can be configured as a 12 k by 4 K blocking switch:
•
•
•
•
8,192-channel x 8,192-channel non-blocking switching from backplane to local streams
8,192-channel x 8,192-channel non-blocking switching from local to backplane streams
8,192-channel x 8,192-channel non-blocking switching from backplane input to backplane output streams
8,192-channel x 8,192-channel non-blocking switching from local input to local output streams
16,384-channel x 16,384-channel non-blocking switching from input to output streams
12,288-channel x 4,096-channel blocking switching from "backplane" to "local" streams
4,096-channel x 12,288-channel blocking switching from "local" to "backplane" streams
12,288-channel x 12,288-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
Total 48 streams input and 48 output
Flexible Configuration
BSTi0-31
LSTo0-15
LSTi0-15
BSTo0-31
Figure 5 - 12 K by 4 K Blocking Configuration
12 K by 12 K
Zarlink Semiconductor Inc.
12 K by 4 K
4 K by 12 K
MT90869
MT90869
18
4 K by 4 K
Total 16 streams input and 16 streams output
LSTi16-31
LSTo16-31
Data Sheet