The DM336P is an integrated modem that provides data transmission, fax, voice, and full-duplex speakerphone functions. The modem is designed for desktop personal computer applications, offering low cost, high reliability, and minimal support requirements.
The DM336P integrated modem provides a complete solution for POTS communication, offering data rates up to 33,600 bps, fax up to 14,400 bps, voice and full‑duplex speaker‑phone functions. It is optimized for desktop PC applications, can operate over dial‑up PSTN or 2‑wire leased lines, and includes auto‑dial, answer, tone detection and data test modes.
The device set consists of four VLSI chips (DM6380 AFE, DM6381 TX DSP, DM6382 RX DSP, DM6383 MCU) packaged in PLCC‑28 and QFP‑100 formats. The MCU provides a virtual 16550 UART, ISA Plug‑and‑Play control, parallel/serial interfaces, up to 128 KB external program memory and 64 KB external data memory, and supports configurable interrupts and UART settings.
| Maximum Data Rate | 33,600 bps |
|---|---|
| Maximum Fax Rate | 14,400 bps |
| DTE Interface Speed | 115,200 bps |
| External Program Memory | 128 KB |
| External Data Memory | 64 KB |
| Package for DM6380 | 28‑pin PLCC |
The DM336P supports data transmission up to 33,600 bps and fax transmission up to 14,400 bps.
The DM6383 MCU can address up to 128 KB of external program memory and 64 KB of external data memory.