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DM336P Datasheet Preview

DM336P Datasheet

V.34 Integrated Data/ Fax/Voice/Speakerphone Modem Device Set

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DM336P pdf
DM336P
V.34 Integrated Data/ Fax/Voice/Speakerphone Modem Device Set
General Description
The DM336P integrated modem is a four chipset
design that provides a complete solution for state-of-
the-art, voice-band Plain Old Telephone Service
(POTS) communication. The modem provides for
Data (up to 33,600bps), Fax (up to 14,400bps), Voice
and Full Duplex Speaker-phone functions to comply
with various international standards.
The design of the DM336P is optimized for desktop
personal computer applications and it provides a low
cost, highly reliable, maximum integration, with the
minimum amount of support required. The DM336P
modem can operate over a dial-up network (PSTN) or
2 wire leased lines.
The modem integrates auto dial and answer
capabilities, synchronous and asynchronous data
transmissions, serial and parallel interfaces, various
tone detection schemes and data test modes.
The DM336P modem’s reference design is pre-
approved for FCC part 68 and provides minimum
design cycle time, with minimum cost to insure the
maximum amount of success.
The simplified modem system, shown in figure below,
illustrates the basic interconnection between the
MCU, DSP, AFE and other basic components of a
modem. The individual elements of the DM336P are:
• DM6380 Analog Front End (AFE). 28-pin PLCC
package
• DM6381 ITU-T V.34 Transmit Digital Signal
Processor (TX DSP). 100-pin QFP package
• DM6382 ITU-T V.34 Receive Digital Signal
Processor (RX DSP). 100-pin QFP package
• DM6383 Modem Controller (MCU) built in Plug &
Play (PnP). 100-pin QFP package
Block Diagram
ISA Bus
LED
Ring
Detector
‘‰†‹†
Micro
Controller
Unit
PnP
V.24
Interface
V.24
Interface
Address &
Data Bus
MSCLK
‘‰†‹„
TX DSP
‘‰†‹…
TxD
RxD
RX DSP
40.32MHz
SCLK
DIT
DOT
TFS
DIR
DOR
RFS
TxBCLK
TxSCLK*2
RxBCLK
RxSCLK
20.16MHz
TxDCLK
RxDCLK
‘‰†‹ƒ RxIN
TxA1 DAA
Analog TxA2
Font End
Speaker
SPKR
Driver
Line
Microphone
Driver
Final
Version: DM336P-DS-F02
August 15, 2000
1



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DM336P Datasheet Preview

DM336P Datasheet

V.34 Integrated Data/ Fax/Voice/Speakerphone Modem Device Set

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DM336P pdf
DM336P
V.34 Integrated Data/ Fax/Voice/Speakerphone Modem Device Set
Table of Contents
General Description ............................................... 1
Block Diagram ....................................................... 1
Features ................................................................ 3
Chipset
• Chip 1: DM6383 Modem Controller Unit with PnP
for ISA (MCU)
DM6383 Description ........................................... 4
DM6383 Block Diagram ...................................... 4
DM6383 Features ............................................... 4
DM6383 Pin Configuration .................................. 5
DM6383 Pin Description ..................................... 6
DM6383 Functional Description .......................... 8
1. Operating Mode Selection............................ 8
2. Micro-controller (8031) Reference ................ 8
3. Micro-controller Register Description............ 8
4. UART (16550A) Emulation Registers ........... 9
5. Plug and Play (PnP) Module .......................14
DM6383 Absolute Maximum Ratings .................20
DM6383 DC Electrical Characteristics................21
DM6383 AC Electrical Characteristics & Timing
Waveforms .....................................................21
• Chip 2: DM6381/DM6382 ITU-T V.34 TX and RX
Digital Signal Processor (TX DSP and RX
DSP) Description
DM6381/82 Description .....................................22
DM6381/82 Block Diagram ................................22
DM6381/82 Features .........................................22
DM6381/82 Pin Configuration ............................23
DM6381/82 Pin Description ...............................24
DM6381/82 Functional Description ....................26
1. System Clock .............................................26
2. Serial Port ..................................................26
3. Dual Port RAM ...........................................26
4. Interrupt......................................................26
DM6381/82 Absolute Maximum Ratings ............26
DM6381/82 DC Electrical Characteristics...........27
DM6381/82 AC Electrical Characteristics & Timing
Waveforms ..................................................... 27
• Chip 3: DM6380 Analog Front End (AFE)
Description
DM6380 Description ..........................................29
DM6380 Block Diagram .....................................29
DM6380 Features..............................................30
DM6380 Pin Configuration.................................30
DM6380 Pin Description ....................................31
DM6380 Functional Description .........................31
DM6380 Absolute Maximum Ratings .................32
DM6380 DC Characteristics...............................32
DM6380 AC Characteristics & Timing Waveforms
.......................................................................... 33
DM6380 Performance........................................33
Application Circuit (for reference only)...................34
Package Information.............................................38
Ordering Information.............................................40
Company Overview ..............................................40
Contact Windows..................................................40
2 Final
Version: DM336P-DS-F02
August 15, 2000


Part Number DM336P
Description V.34 Integrated Data/ Fax/Voice/Speakerphone Modem Device Set
Maker ETC
Total Page 30 Pages
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