[Davicom]

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.

特性 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 test