SAA7220 Description
The SAA7220 is a stereo interpolating digital filter designed for the pact Disc Digital Audio system. For descriptive purposes, the SAA7220 is referred to as the B-chip and the SAA7210 as the A-chip.
SAA7220 Key Features
- 16-bit serial data input (two's plement)
- Interpolated data replaces erroneous data samples
- 12 dB attenuation via the active LOW attenuation input control (ATSB)
- Smoothed transitions before and after muting
- Two identical finite impulse response transversal filters each with a sampling rate of four times that
- Digital audio output of 32-bit words transmitted in biphase-mark code
- 12 S data transfer between SAA7210, SAA7220 and 16-bit dual DAC (TOA 1541)