AS2540
AS2540 is Remote Controlled Single-Chip-Telephone manufactured by austriamicrosystems AG.
Data Sheet AS2540 austriamicaursotrsiaymsitceromsysstems
Remote Controlled Single-Chip-Telephone
DATA SHEET (PRELIMINARY)
SDPnTechnical coantmesntAsGtill valid SMASK Dia l Dig it SMUTE STIT SROH SROT SDPn SMASK Dial Digit SMUTE STIT SROH SROT
General Description
The AS2540 is a CMOS integrated circuit that incorporates a speech circuit (line-adaptation, 2/4-wire conversion, separate Rx- and Tx-amplifiers for handset and modem), MF dialler, ring frequency detector, ring melody generator and a two wire serial interface. It shall act as an a/b-line-powered device in order to interface a main-powered CPU to the analogue telephone line.
AS2540 can operate in a so-called mainpower...
