SAA2501 Datasheet, PDF (2/52 Pages) NXP Semiconductors – Digital Audio Broadcast DAB decoder

Philips Semiconductors
Digital Audio Broadcast (DAB) decoder
Preliminary specification
SAA2501
CONTENTS
2
3
4
5
6
7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.17.1
7.17.2
7.17.3
7.17.4
7.18
7.19
7.20
7.20.1
7.20.2
7.20.3
7.20.4
7.20.5
7.20.6
7.20.6.1
7.20.7
7.20.8
7.20.9
7.20.10
7.20.11
7.20.12
FEATURES
APPLICATION
GENERAL DESCRIPTION
ORDERING INFORMATION
BLOCK DIAGRAM
PINNING
FUNCTIONAL DESCRIPTION
Coding system
Basic functionality
SAA2501 clocks
Crystal oscillator
Clock frequencies when using the slave input
Clock frequencies when using the master input
Target applications; applying the SAA2501 with
2 ISO/MPEG sources
Buffered clock outputs
Functionality issues
Synchronization to input data bitstreams
Master input bit rate selection
Sample rate selection
Handling of errors in the coded input data
sub-band filter signals
Baseband audio processing
Decoding control signals
Coded data interfaces
The coded data master input interface
The coded data slave input interface
Slave input transfer speed of first frame
Slave input transfer speed of subsequent
frames
The sub-band filter interface
The baseband output interface
The L3 control interface
L3 signals
L3 transfer types
L3 interface initialization at an SAA2501 device
reset
L3 interface control
SAA2501 status
Data items
General data items
SAA2501 settings item
Input data frame header items
Error report item
Audio service synchronized data item
Ancillary Data/XPAD item
APU coefficients item
7.20.13
7.20.14
8
8.1
8.1.1
8.1.1.1
8.1.1.2
8.1.1.3
8.1.1.4
8.1.2
8.1.3
8.1.3.1
8.1.3.2
8.1.4
8.1.5
8.1.5.1
8.1.5.2
8.1.5.3
8.2
8.2.1
8.2.2
9
10
11
12
13
14
14.1
14.1.1
14.1.2
14.1.3
15
16
Speed limitations of the L3 interface
Default item data values after reset
APPENDIX
Preliminary specification 3-line ‘L3’ interface
Introduction
Addressing mode
Special function operational address
Data mode
Halt mode
Device interface reset
Extended addressing
Operational address declaration
Operational address invalidation
Example of a data transfer
Timing requirements
Addressing mode
Data mode
Halt mode
SAA2501 L3 protocol enhancement options
Testing L3RDY by polling L3DATA
Options to increase the timing accuracy of the
APU coefficient writing
LIMITING VALUES
DC CHARACTERISTICS
AC CHARACTERISTICS
APPLICATION INFORMATION
PACKAGE OUTLINE
SOLDERING
Plastic quad flat-packs
By wave
By solder paste reflow
Repairing soldered joints (by hand-held
soldering iron or pulse-heated solder tool)
DEFINITIONS
LIFE SUPPORT APPLICATIONS
January 1995
2