DM336P Davicom Semiconductor Incorporated, DM336P Datasheet
DM336P
Manufacturer Part Number
DM336P
Description
Manufacturer
Davicom Semiconductor Incorporated
Datasheet
1.DM336P.pdf
(40 pages)
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.
Block Diagram
Final
Version: DM336P-DS-F02
August 15, 2000
ISA Bus
Controller
P n P
Interface
Interface
‘ ‰ † ‹ †
V.24
V.24
L E D
M i c r o
Unit
V.34 Integrated Data/ Fax/Voice/Speakerphone Modem Device Set
Address &
Data Bus
M S C L K
RxD
40.32MHz
TxD
‘ ‰ † ‹ …
R X D S P
‘ ‰ † ‹ „
T X D S P
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
• DM6381 ITU-T V.34 Transmit Digital Signal
• DM6382 ITU-T V.34 Receive Digital Signal
• DM6383 Modem Controller (MCU) built in Plug &
package
Processor (TX DSP). 100-pin QFP package
Processor (RX DSP). 100-pin QFP package
Play (PnP). 100-pin QFP package
TxSCLK*2
20.16MHz
RxBCLK
RxSCLK
TxDCLK
TxBCLK
RxDCLK
S C L K
D O R
DOT
R F S
TFS
DIT
DIR
Detector
R i n g
F o n t E n d
‘ ‰ † ‹ ƒ
A n a l o g
S P K R
RxIN
TxA1
TxA2
S p e a k e r
M i c r o p h o n e
Driver
D A A
Driver
Line
DM336P
1
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