CMOS SMX - Switch Matrix Module
CMOS MT9080B SMX - Switch Matrix Module
Features
• • • • • • 16 bit wide data bus I/O 16 bit address bus Microprocessor...
Description
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
MT9080B
CMOS
D15o
D14o
D13o
D12o
D11o
D10o
VDD
VSS
VSS
VSS
VSS
D9o 76
10
84
82
80
D8i D9i D10i D11i VSS D12i D13i D14i D15i VSS CK VDD VSS IC IC FP CS DS R/W DTA NC
78
8
6
4
2
D8o
D7i
D6i
D5i
D4i
D3i
D2i
D1i
D0i
12 14 16 18 20 22 24 26 28 30
74 72 70 68 66
VSS D...
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