MT8982AE Mitel, MT8982AE Datasheet

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MT8982AE

Manufacturer Part Number
MT8982AE
Description
5V; small digital switch. For cost sensitive digital switching applications
Manufacturer
Mitel
Datasheet

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Features
Applications
SCLK/CSTi1
RxD/CSTi0
ST-BUS/GCI compatible switch matrix
64 channel non-blocking time switch
2 x 32 channel serial inputs and outputs
Per-channel tristate control
4-pin serial microprocessor interface
Patented message mode
Low power consumption (10 mW)
Single 5 volt supply
Cost sensitive digital switching applications
Digital key telephone systems
GCI/ST-BUS conversion
ST-BUS device control interface
ISDN telephone set support circuit
Interprocessor communication
CS/CMS
TxD/NC
MPS
ODE
STi0
STi1
F0o
C4i
F0i
Converter
Counters
Microport
Address
Parallel
Serial
Serial
to
Figure 1 - Functional Block Diagram
Data
Mux
Data Memory
64 x 8
Connect Memory
ISO-CMOS ST-BUS
Address
Address
Mux
64 x 9
Mux
Description
The MT8982 Small Digital Switch (MiniDX) is a non-
blocking CMOS time switch with a capacity of up to
64 - 8 bit Time Division Multiplexed (TDM) encoded
voice or data channels. It is a size-optimized version
of MITEL's successful MT8980D Digital Switches,
providing switching capability in cost sensitive
applications such as telephone sets and digital key
systems. The TDM interface to the device is via two
pairs of 2048 kbit/s serial streams with 32 64 kbit/s
channels per stream (ST-BUS). A serial microport
provides access to the device for programming the
required connections.
compatible with most common microcontrollers. The
unique message mode capability allows the MT8982
to act as a controller for other members of MITEL's
ST-BUS family of components.
MT8982AC
MT8982AE
MT8982AS
MT8982AN
Small Digital Switch (MiniDX)
Output
Mux
Ordering Information
-40 to +85 C
16 Pin Ceramic DIP
16 Pin Plastic DIP
16 Pin SOIC
20 Pin SSOP
ISSUE 6
FAMILY
The serial microport is
3-State
Control
Converter
Parallel
Serial
to
MT8982
May 1995
STo0
STo1
2-31

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MT8982AE Summary of contents

Page 1

... Microport SCLK/CSTi1 CS/CMS MPS ODE ISO-CMOS ST-BUS Small Digital Switch (MiniDX) MT8982AC MT8982AE MT8982AS MT8982AN Description The MT8982 Small Digital Switch (MiniDX non- blocking CMOS time switch with a capacity bit Time Division Multiplexed (TDM) encoded voice or data channels size-optimized version of MITEL's successful MT8980D Digital Switches, ...

Page 2

MT8982 ISO-CMOS 1 STi0 16 2 STi1 15 3 STo0 14 4 STo1 13 5 RxD/CSTi0 12 6 TxD/ SCLK/CSTi1 10 8 VSS 9 16 PIN CERDIP/PLASTIC/SOIC Pin Description Pin # Name 16 20 1-2 1-2 STi0- Serial ...

Page 3

Functional Description The MT8982 (MiniDX) provides cost effective time switching capability for small size applications utilizing up to two serial Time Division Multiplexed (TDM) streams. Each TDM stream consists kb/s channels, giving the MiniDX a maximum capacity ...

Page 4

MT8982 ISO-CMOS When an output channel is in message mode, the data for the output channel originates from the microcontroller. The microcontroller writes data to the Connect Memory location which corresponds to the output link and channel number. The contents ...

Page 5

RxD by the rising edges of the next eight SCLK cycles. If the operation is a read, eight data bits are clocked from TxD by the falling edges of the next eight SCLK cycles. The rising edge of CS ...

Page 6

MT8982 ISO-CMOS Channel 31 F0i C4 Bit 0 Microport Mode Link 0 Link Serial Port Mode Figure 4 - Internal Memory Access Windows channels and is not dependent on the input ...

Page 7

... Also, neither the Connect Memory nor the Data Memory can be read while the device is in serial bus mode. MITEL’s MT8980, MT9080 and MT8920 devices can all be used as programmable parallel-to-ST-BUS serial interfaces for CSTi0 and and sends the CSTi1 ...

Page 8

... Primary Rate Serial Controller Figure 7 shows the MT8982 used in a primary rate serial control application. The MT8982 is used as the control interface from a microcontroller to MITEL’s MH89760/790 T1 Primary Rate Interfaces using the microcontroller’s serial microport. MT8982 offloads signalling ...

Page 9

MT9080/85’s P Large Switch Matrix Large Central Switch & Central Control Figure 6 - Distributed Switching System MT8980 Switch Matrix Parallel P Interface MT8952 D-Channel Protocol Controller MT8982 Serial MiniDx P Interface Figure 7 - Primary Rate Serial Controller MT8982 ...

Page 10

... GCI channel B1 to GCI channel B2, the MT8982 must be programmed to connect channel 5 to channel 6. Channel 0 Channel 4 Channel 0 Channel 4 CH1 CH2 CH3 and C CH1(6) CH2(7) CH3(8) Mitel Basic Rate Phone Components STo STi C4i F0i Channel 5 Channel 5 - ST-BUS and MiniDx Channels - GCI (MiniDx) Channels ...

Page 11

Absolute Maximum Ratings Parameter 1 Power supply voltage Voltage on any pin 3 Current at any pin (other than supply) 4 Storage temperature 5 Package power dissipation * Exceeding these values may cause permanent damage. ...

Page 12

MT8982 ISO-CMOS ppwh t ppwl SCLK RxD bit 0 TxD F0i (ST-BUS F0i (GCI) C4i t sdaa DSTo0 DSTi0-1 CSTi0-1 2-42 t cdbd bit 7 t ...

Page 13

AC Electrical Characteristics respect to ground (V ) unless otherwise stated. SS Characteristics 1 Frame Pulse Input Setup Time 2 Frame Pulse Input Hold Time 3 Serial Output Delay; Active to Active 4 Serial Output Delay; Active to High Z ...

Page 14

MT8982 ISO-CMOS NOTES: 2-44 ...

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