DM336P Datasheet, PDF (1/40 Pages) List of Unclassifed Manufacturers – V.34 Integrated Data/ Fax/Voice/Speakerphone Modem Device Set

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
Line
Analog ^TxA2
Font End
Speaker
SPKR
Driver
Microphone
Driver
Final
1
Version: DM336P-DS-F02
August 15, 2000