Philips Semiconductors
Product specification
Digital servo processor and Compact Disc decoder
with integrated DAC for video CD (CD7 II)
CONTENTS
1
2
3
4
5
6
7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.2
7.3
7.4
7.4.1
7.4.2
7.5
7.5.1
7.5.2
7.5.3
7.6
7.6.1
7.7
7.7.1
7.7.2
7.7.3
7.7.4
7.7.5
7.8
7.8.1
7.8.2
7.9
7.9.1
7.10
7.11
7.12
7.13
7.13.1
7.13.2
7.13.3
7.13.4
FEATURES
GENERAL DESCRIPTION
ORDERING INFORMATION
QUICK REFERENCE DATA
BLOCK DIAGRAM
PINNING
FUNCTIONAL DESCRIPTION
Decoder part
Principal operational modes of the decoder
Decoding speed and crystal frequency
Lock-to-disc mode
Standby modes
Crystal oscillator
Data slicer and clock regenerator
Demodulator
Frame sync protection
EFM demodulation
Subcode data processing
Q-channel processing
EIAJ 3 and 4-wire subcode (CD graphics)
interfaces
V4 subcode interface
FIFO and error corrector
Flags output (CFLG)
Audio functions
De-emphasis and phase linearity
Digital oversampling filter
Concealment
Mute, full-scale, attenuation and fade
Peak detector
DAC interface
Internal bitstream Digital-to-Analog Converter
(DAC)
External DAC interface
EBU interface
Format
KILL circuit
Audio features off
The VIA interface
Spindle motor control
Motor output modes
Spindle motor operating modes
Loop characteristics
FIFO overflow
7.14
7.14.1
7.14.2
7.14.3
7.14.4
7.14.5
7.14.6
7.14.7
7.14.8
7.14.9
7.14.10
7.14.11
7.15
7.15.1
7.15.2
7.15.3
7.15.4
7.15.5
7.15.6
7.15.7
8
9
10
11
12
13
14
15
15.1
15.2
15.3
15.4
15.5
16
17
18
SAA7327
Servo part
Diode signal processing
Signal conditioning
Focus servo system
Radial servo system
Off-track counting
Defect detection
Off-track detection
High-level features
Driver interface
Laser interface
Radial shock detector
Microcontroller interface
Microcontroller interface (4-wire bus mode)
Microcontroller interface (I
2
C-bus mode)
Decoder registers and shadow registers
Summary of functions controlled by decoder
registers 0 to F
Summary of functions controlled by shadow
registers
Summary of servo commands
Summary of servo command parameters
LIMITING VALUES
CHARACTERISTICS
OPERATING CHARACTERISTICS
(SUBCODE INTERFACE TIMING)
OPERATING CHARACTERISTICS (I
2
S-BUS
TIMING)
OPERATING CHARACTERISTICS
(MICROCONTROLLER INTERFACE TIMING)
APPLICATION INFORMATION
PACKAGE OUTLINE
SOLDERING
Introduction to soldering surface mount
packages
Reflow soldering
Wave soldering
Manual soldering
Suitability of surface mount IC packages for
wave and reflow soldering methods
DEFINITIONS
LIFE SUPPORT APPLICATIONS
PURCHASE OF PHILIPS I
2
C COMPONENTS
1999 Jun 17
2
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 96f
s
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 f
s
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
3
ORDERING INFORMATION
TYPE
NUMBER
SAA7327H
•
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 I
2
C-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.
PACKAGE
NAME
QFP64
DESCRIPTION
plastic quad flat package; 64 leads (lead length 1.6 mm);
body 14
×
14
×
2.7 mm
VERSION
SOT393-1
1999 Jun 17
3
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