Features: * Compatibility
-ITU-T V.34 (33600 to 2400 bps)
-CCITT V.32bis (14400, 12000, 9600, 7200,4800bps)
-CCITT V.32 (9600, 7200, 4800bps)
-CCITT V.22bis (2400, 1200bps)
-CCITT V.22 (1200bps)
-CCITT V.23 (1200/75bps)
-Bell 212A (1200bps)
-Bell 103 (300bps)
-CCITT V.17 (14400, 12000, 7200bps)
-CCITT V.29 (9600, 7200bps)
-CCITT V.27ter (4800, 2400bps)
-CCITT V.21 Channel 2 (300bps)
* Data Error Correction
-MNP Class 2, 3 & 4
-CCITT V.42 LAMP
* Data Compression
-MNP Class5
-CCITT V.42bis
-Voice compression
-2 and 4 bit ADPCM voice compression
* DTE Interface
-DTE speed up to 115200bps
-Serial V.24 (EIA-232-D)
* Enhanced "AT" command set and S registers
* Caller identification (Caller ID) support
* Full duplex speakerphone (Telephone Emulation)
* 16 Bits over-sampling codec
* Selectable world wide call progress tone detection
* Compromise and adaptive equalizer providing channel impairment compensation
* The channel impairment compensation
* Plug and Play (PnP) support
* Integrated UART 16550
* Enhanced 8031 compatible micro-controller
* 8 selectable interrupts
* Parallel and serial interfaces supported
-6-, 7- and 8- bit character support
-Even, odd, mark and none parity detection and generation
-1 and 2 stop bit support
-Auto DTE data speed detection through "AT"
* Access up to 128K bytes external program memory
* Access up to 64K bytes external data memory
* NVRAM to store two user configurable, switchable profiles and three programmable telephone numbers
* Full duplex data mode test capabilities
-Analog loop testPinout
SpecificationsPower Supply Voltage......................................................-0.5V to +7.0V
Case Operating Temperature...............................................0 to 85
Storage Temperature.......................................................-65 to 150
Applied Voltage On Any Pin............................- 0.5V VIN VDD+0.5VDescription 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
DM336P Data Sheet
