
Davicom Semiconductor, Inc.
General Description
The DM560P integrated modem is a four chipset design that provides a complete solution for stateof-the-art, voice-band Plain Old Telephone Service (POTS) communication. The modem provides for Data (up to 56,000bps), Fax (up to 14,400bps), Voice and Full Duplex Speaker-phone functions to comply with various international standards.
FEATUREs
■ Compatibility
- ITU-T V.90 (56000 to 28000 bps)
- 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)
■ Fax
- CCITT V.17 (14400, 12000, 7200bps)
- CCITT V.29 (9600, 7200bps)
- CCITT V.27ter (4800, 2400bps)
- CCITT V.21 Channel 2 (300bps)
- Group III, Class 1
■ Data Error Correction
- MNP Class 4
- CCITT V.42 LAPM
■ Data Compression
- MNP Class5
- CCITT V.42bis
■ Voice compression
- 2 and 4 bit ADPCM
- IMA ADPCM (Developing)
- 8 Bit PCM
■ DTE Interface
- DTE speed up to 115200bps
■ Enhanced T” command set and S registers
- TIA/EIA 602, ITU V.25 ter AT command
- TIA/EIA 578 Fax Class 1 command set
- TIA/EIA IS-101 Voice command set
■ Video-ready modem interface V.80(Developing)
■ V.8bis (Developing)
■ Integrated UART 16550
■ Parallel and Serial interfaces
- 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”
■ Caller identification (Caller ID) support
■ Speakerphone
■ Selectable world wide call progress tone detection
■ 16 Bit over-sampling codec
■ Compromise and adaptive equalizer providing channel impairment compensation
■ Plug and Play (PnP) support
■ Enhanced 8032 compatible micro-controller
■ Power Management (power down mode)
■ 8 selectable interrupts
■ Access up to 256K bytes external program memory
■ Access up to 64K bytes external data memory
■ NVRAM to store two user configurable, selectable profiles with three programmable telephone numbers
■ Full duplex data mode test capabilities
- Analog loop test