MT90871
Flexible 8K Digital Switch (F8KDX)
Data Sheet
December 2002
Features
•
8,192-channel x 8,192-channel non-blocking
Ordering Information
unidirectional switching. The Backplane and
Local inputs and outputs can be combined to
form a non-blocking switching matrix with 32
stream inputs and 32 stream outputs.
MT90871AV 196 Ball LBGA
-40C to +85C
•
•
•
•
•
4,096-channel x 4,096 channel non-blocking
Backplane to Local stream switch.
•
•
•
•
Per-stream channel and bit delay for Local input
streams.
4,096-channel x 4,096 channel non-blocking
Local to Backplane stream switch.
Per-stream channel and bit delay for Backplane
4,096-channel x 4,096 channel non-blocking
input streams.
Backplane input to Backplane output switch.
Per-stream advancement for Local output
streams.
4,096-channel x 4,096 channel non-blocking
Local input to Local output stream switch.
Per-stream advancement for Backplane output
Rate conversion on all data paths, Backplane to
Local, Local to Backplane, Backplane to
Backplane and Local to Local streams.
Backplane port accepts 16 ST-BUS streams with
data rates of 2.048Mb/s, 4.096Mb/s, 8.192Mb/s
or 16.384Mb/s in any combination.
Local port accepts 16 ST-BUS streams with data
rates of 2.048Mb/s, 4.096Mb/s, 8.192Mb/s or
16.384Mb/s, in any combination.
streams.
•
•
Constant throughput delay for frame integrity.
Per-channel high impedance output control for
•
•
Local and Backplane streams.
•
•
Per-channel driven-high output control for Local
and Backplane streams.
High impedance-control outputs for external
drivers on Backplane and Local port.
V
V
V
SS (GND)
DD_IO
DD_CORE
RESET
ODE
Backplane Data Memories
(4,096 channels)
Local
BSTi0-15
BSTo0-15
LSTi0-15
Interface
Backplane
Local
Local
Backplane
Interface
Connection Memory
(4,096 locations)
Connection Memory
(4,096 locations)
Interface
LSTo0-15
LCST0-1
BCST0-1
BORS
Local Data Memories
(4,096 channels)
LORS
FP8o
FP8i
Local
Backplane
FP16o
Timing
Unit
Timing Unit
C8o
C16o
Microprocessor Interface
and Internal Registers
Test Port
C8i
PLL
V
DD_PLL
DS CS R/W A14-A0 DTA D15-D0 TMS TDi TDo TCK TRST
Figure 1 - MT90871 Functional Block Diagram
1
Zarlink Semiconductor Inc.