MT90869AG Zarlink, MT90869AG Datasheet - Page 13

• 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

Pin Description
BSTo0 - 15
BSTo16 - 31
BCSTo0-3
Name
C5, B5, A5 C4, A4,
A3, B1, B2, B3, C1,
C2, D1, D2, D3, E1,
E2
E3, E4, F1, F2, F3,
G1, G2, G3, G4, H1,
H2, H3, J1, J2, J3,
J4
C14, A15, B15, C15
Coordinates
Package
Backplane Serial Output Streams 0 to 15 (5 V Tolerant, Three-state Outputs).
In Non-32 Mb/s Mode, these pins output serial TDM data streams at a data-rate
of:-
16.384 Mb/s (with 256 channels per stream),
8.192 Mb/s (with 128 channels per stream),
4.096 Mb/s (with 64 channels per stream), or
2.048 Mb/s (with 32 channels per stream).
The data-rate is independently programmable for each output stream.
In 32 Mb/s Mode, these pins output serial TDM data streams at a fixed data-rate of
32.768 Mb/s (with 512 channels per stream).
Refer to descriptions of the BORS and ODE pins for control of the output High or
High-Impedance state.
Backplane Serial Output Streams 16 to 31 (5 V Tolerant Three-state Outputs).
In Non-32 Mb/s Mode, these pins output serial TDM data streams at a data-rate
of:-
16.384 Mb/s (with 256 channels per stream),
8.192 Mb/s (with 128 channels per stream),
4.096 Mb/s (with 64 channels per stream), or
2.048 Mb/s (with 32 channels per stream).
The data-rate is independently programmable for each output stream.
These pins are unused when the 32 Mb/s Mode is selected.
Refer to descriptions of the BORS and ODE pins for control of the output High or
High-Impedance state.
Backplane Output Channel High Impedance Control (5 V Tolerant Three-state
Outputs). Active high output enable which may be used to control external
buffering individually for a set of backplane output streams on a per channel basis.
In non-32 Mb/s mode (stream rates 2 Mb/s to 16 Mb/s):
BCSTo0 is the output enable for BSTo[0,4,8,12,16,20,24,28],
BCSTo1 is the output enable for BSTo[1,5,9,13,17,21,25,29],
BCSTo2 is the output enable for BSTo[2,6,10,14,18,22,26,30],
BCSTo3 is the output enable for BSTo[3,7,11,15,19,23,27,31].
In 32 Mb/s mode (stream rate 32 Mb/s):
BCSTo0 is the output enable for BSTo[0,4,8,12],
BCSTo1 is the output enable for BSTo[1,5,9,13],
BCSTo2 is the output enable for BSTo[2,6,10,14],
BCSTo3 is the output enable for BSTo[3,7,11,15].
Refer to descriptions of the BORS and ODE pins for control of the output High or
High-Impedance state.
Zarlink Semiconductor Inc.
MT90869
13
Description
Data Sheet