73M2921 - Advanced Single Chip Modem
The 73M2921 is a CMOS integrated circuit which provides all the modem “Data Pump” functions required to implement a V.22bis data modem.
It consists of a DSP (Digital Signal Processor) core with RAM and ROM data memory, ROM instruction memory, and register mapped input/output functions including time
73M2921 Features
* include a parallel interface control port between the host processor and the 73M2921. A synchronous serial data channel provides synchronizing clocks RXCLK and TXCLK from the modem pump to the controller. The 73M2921 contains an oscillator and power control features. The host controller
