描述 Description

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?