 |
 |
|
| SAA7327 |
|
|||||||||||||||||
 PHILIPS
|
| |||||||||||||||||
|
3 page 
1999 Jun 17 3 Philips Semiconductors Product specification Digital servo processor and Compact Disc decoder with integrated DAC for video CD (CD7 II) SAA7327 1 FEATURES • Integrated bitstream DAC with differential outputs, operating at 96fs with 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 fs mode • 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. 2 GENERAL DESCRIPTION The SAA7327 (CD7 II) is a single chip combining the functions of a CD decoder, digital servo and bitstream DAC, especially designed for Video CD applications. The decoder/servo part is based on the SAA737x (CD7) and is software compatible with this design. Extra functions are controlled by use of ‘shadow’ registers (see Section 7.15.3). Supply of this Compact Disc IC does not convey an implied license under any patent right to use this IC in any Compact Disc application. 3 ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION SAA7327H QFP64 plastic quad flat package; 64 leads (lead length 1.6 mm); body 14 × 14 × 2.7 mm SOT393-1 |
