AS2540 Key Features
- Line Interface, Speech Circuit, MF Dialler and Tone Ringer on a 28 pin CMOS chip
- Programmable via 2-wire serial interface (UART 9600 baud, 8N1)
- Watch dog timer for Backup Mode
- Additional input for modem transmit path
- Additional output for modem receive path
- CMOS for high EMC immunity
- Low Noise (max. -72 dBm)
- Soft clipping for handset operation to avoid harsh distortion
- Line loss pensation selectable by pin option
- Real and plex impedance selectable by external
