SAA7327
SAA7327 Description
Digital servo processor and Compact Disc decoder with integrated DAC for video CD (CD7 II)
SAA7327 Vendor
Philips Semiconductors
SAA7327 Categories
CD Related ICs
SAA7327 Features
Integrated bitstream DAC with differential outputs, operating at 96fswith 3rd order noise shaper; typical performance of -95 dB signal-to-noise ratio (EIAJ A-weighted)
Separate serial input and output interfaces allow data ‘loopback’ mode for use of onboard DAC as stand-alone DAC for digital audio signals
Up to 2 times speed mode
Lock-to-disc mode
Full error correction strategy, t = 2 and e = 4
Full subcode (CD graphics) interface
All standard decoder functions implemented digitally on chip
FIFO overflow concealment for rotational shock resistance
Digital audio interface (EBU), audio and data
2 and 4 times oversampling integrated digital filter, including fsmode
Audio data peak level detection
Kill interface for external DAC deactivation during digital silence
All SAA737x (CD7) digital servo and high-level functions
Low focus noise
Improved playability performance
Automatic closed-loop gain control available for focus and radial loops
Pulsed sledge support
Electronic damping of fast radial actuator during long jump
Microcontroller loading LOW
High-level servo control option
High-level mechanism monitor
Communication may be via TDA1301/SAA7345 compatible bus or I²C-bus
On-chip clock multiplier allows the use of 8.4672, 16.9344 or 33.8688 MHz crystals or ceramic resonators.
