MT89L86 Datasheet, PDF (1/40 Pages) Mitel Networks Corporation – CMOS ST-BUS™ FAMILY Multiple Rate Digital Switch

CMOS ST-BUS™ FAMILY _MT89L86
Multiple Rate Digital Switch
Advance Information
Features
• 3.3 volt supply
• 5V tolerant inputs and TTL compatible outputs.
• 256 x 256 or 512 x 256 switching configurations
• 8-bit or 4-bit channel switching capability
• Guarantees frame integrity for wideband
channels
• Automatic identification of ST-BUS/GCI
interfaces
• Accepts serial streams with data rates of 2.048,
4.096 or 8.192 Mb/s
• Rate conversion from 2.048 Mb/s to 4.096 or
8.192 Mb/s and vice-versa
• Programmable frame offset on inputs
• Per-channel three-state control
• Per-channel message mode
• Control interface compatible to Intel/Motorola
CPUs
• Low power consumption
Applications
• Medium size mixed voice and data switching/
processing matrices
• Hyperchannel switching (e.g., ISDN H0)
• MVIP^™ interface functions
• Serial bus control and monitoring
• Centralized voice processing systems
• Voice/Data multiplexer
• ADPCM 32 kbit/s channel switching
DS5195
ISSUE 2
September 1999
Ordering Information
MT89L86AP 44 Pin PLCC
MT89L86AN 48 Pin SSOP
-40°C to +85°C
Description
The 3.3V Multiple Rate Digital Switch (MT89L86) is
pin compatible with MITEL’s 5V MT8986 and retains
all of its functionality. This 3.3v device is designed to
provide simultaneous non-blocking connections for
up to 256 64kb/s channels or blocking connections
for up to 512 64kb/s channels. The serial inputs and
outputs may have 32 to 128 64kb/s channels per
frame with data rates ranging from 2048 up to 8192
kb/s. It also provides per-channel selection between
variable and constant throughput delays allowing
voice and grouped data channels to be switched
without corrupting the data sequence integrity.
RESET** ^{VDD VSS}
ODE
STi0
STi1
STi2
STi3
STi4
STi5
STi6
STi7
STi8
STi9
STi10
STi11
STi12
STi13
STi14
STi15
Serial
to
Parallel
Converter
Timing
Unit
Multiple Buffer Data
Memory
Internal Registers
Microprocessor
Interface
Output
MUX
Connection
Memory
Parallel
to
Serial
Converter
STo0
STo1
STo2
STo3
STo4
STo5
STo6
STo7
STo8
STo9
CLK FR AS/ IM DS _{CS R/W} A0/ _DTA AD7/
** for 48-pin SSOP only
ALE
RD
WR ^A7
AD0
CSTo
Figure 1 - Functional Block Diagram
1