SAA7348GP Datasheet, PDF (3/60 Pages) NXP Semiconductors – All Compact Disc Engine ACE

Philips Semiconductors
All Compact Disc Engine (ACE)
Preliminary specification
SAA7348GP
1 FEATURES
• Focus servo loop
• Radial servo loop
• Built-in access procedure with fast track count
possibilities
• Sledge motor servo loop with pulsed sledge support
• High speed error correction, up to sixteen times
over-speed
• Supports three different over-speed ranges with only
one external crystal
• Lock-to-disc mode
• Full turntable motor control
• Full error correction strategy, t = 2 and e = 4
• All standard decoder functions implemented digitally
• Adaptive digital HF equalizer
• FIFO overflow concealment for rotational shock
resistance
• Digital audio interface (EBU), audio and data
• 2 and 4 times oversampling integrated digital filter,
including f_s mode
• Audio data peak level detection
• Kill interface for DAC deactivation during digital silence
• All TDA1301 (DSIC2) digital servo functions
• Low focus noise
• Improved playability on ABEX TCD-721R, TCD-725 and
TCD-714 discs
• Automatic closed loop gain control available for focus
and radial loops
• On chip clock multiplier allows the use of 8.4672 MHz
crystal
• S2B serial interface with host controller
• Double speed servo
• Integrated engine controller (high speed embedded
80C51)
• External program support.
2 GENERAL DESCRIPTION
The SAA7348 All Compact Disc Engine (ACE) combines
the functionality of a CD decoder (LO9585), a digital servo
(OQ8868) and a microcontroller core (80C51 based) on a
single chip. It was developed for high speed CD-ROM
applications but, due to the large scale integration, can
also be used in other CD applications. The internal
microcontroller makes it possible to develop other
applications quickly. The microcontroller can operate with
internal or external ROM.
Additional features include:
• High level integration
• Improved communication speed.
3 ORDERING INFORMATION
TYPE NUMBER
NAME
PACKAG0E
DESCRIPTION
SAA7348GP
LQFP100 plastic low profile quad flat package; 100 leads; body 14 × 14 × 1.4 mm
VERSION
SOT407-1
1997 Jul 11
3