MT9080B Datasheet, PDF (1/25 Pages) Mitel Networks Corporation – CMOS SMX - Switch Matrix Module

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
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
DS5140
ISSUE 4
Ordering Information
March 1999
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.
D0i/D15i
16
A0-A15
ME
16
16
Address
MUX
11
11 Bit
Counter
Counter
Reset
2048 x 16
Static
Memory
16
CRC
WR
PRECHARGE
ENABLE
Control Interface
D0o/
D15o
CD
FP
CK ODE DS CS R/W Mx My Mz DTA
Figure 1 - Functional Block Diagram
2-101