CMOS
MT9080B
SMX - Switch Matrix Module
Features
•
•
•
•
•
•
16 bit wide data bus I/O
16 bit address bus
Microprocessor Interface
2048 x 16 bit wide memory SRAM
Interfaces with Mitel’s MT9085B to form larger
switch mitoses
Variable clock and frame rates
DS5140
ISSUE 4
March 1999
Ordering Information
MT9080BP
84 Pin PLCC
-40°C to 70°C
Description
The MT9080B is a flexible memory module suitable
for use as a basic building block in the construction
of customized digital switching matrices. It can be
configured as either a Data Memory or a Connection
Memory, and is designed to interface with Mitel’s
MT9085B. Interface to the device is via 16 bit wide
data and address busses. The MT9080B can
operate with variable clock rates up to 16.7 MHz.
Applications
•
•
•
Small and medium digital switch matrices
Telephony equipment - PBX, CO equipment,
digital cross connect, digital local loop
Datacom equipment - access concentrators,
Lan/Wan gateways
D0i/D15i
16
16
2048 x 16
16
Address
MUX
11
11 Bit
Counter
WR
ENABLE
PRECHARGE
Static
Memory
16
D0o/
D15o
A0-A15
CRC
CD
Control Interface
Counter
Reset
ME
FP
CK
ODE DS
CS R/W
Mx
My
Mz
DTA
Figure 1 - Functional Block Diagram
2-101
MITEL [ MITEL NETWORKS CORPORATION ]
