Audio Decoder-Encoder. PSB7280 Datasheet

PSB7280 Decoder-Encoder. Datasheet pdf. Equivalent


Siemens Semiconductor Group PSB7280
ICs for Communications
Joint Audio Decoder-Encoder
PSB 7280 Version 3.1
Data Sheet 1998-07-01
DS 1


PSB7280 Datasheet
Recommendation PSB7280 Datasheet
Part PSB7280
Description Joint Audio Decoder-Encoder
Feature PSB7280; ICs for Communications Joint Audio Decoder-Encoder PSB 7280 Version 3.1 Data Sheet 1998-07-01 DS 1 .
Manufacture Siemens Semiconductor Group
Datasheet
Download PSB7280 Datasheet




Siemens Semiconductor Group PSB7280
PSB 7280
Revision History:
Previous Version:
Page
Page
(in previous (in current
Version) Version)
Current Version: 1998-07-01
Preliminary Data Sheet 06.96 (V 2.2)
Subjects (major changes since last revision)
For questions on technology, delivery and prices please contact the Semiconductor Group Offices
in Germany or the Siemens Companies and Representatives worldwide: see our webpage at
http://www.siemens.de/semiconductor/communication
IOM®, IOM®-1, IOM®-2, SICOFI®, SICOFI®-2, SICOFI®-4, SICOFI®-4µC, SLICOFI®, ARCOFI® , ARCOFI®-BA,
ARCOFI®-SP, EPIC®-1, EPIC®-S, ELIC®, IPAT®-2, ITAC®, ISAC®-S, ISAC®-S TE, ISAC®-P, ISAC®-P TE, IDEC®,
SICAT®, OCTAT®-P, QUAT®-S are registered trademarks of Siemens AG.
MUSAC-A, FALC54, IWE, SARE, UTPT, ASM, ASP, DigiTapeare trademarks of Siemens AG.
Edition 1998-07-01
Published by Siemens AG,
HL SP,
Balanstraße 73,
81541 München
© Siemens AG 1998.
All Rights Reserved.
Attention please!
As far as patents or other rights of third parties are concerned, liability is only assumed for components, not for
applications, processes and circuits implemented within components or assemblies.
The information describes the type of component and shall not be considered as assured characteristics.
Terms of delivery and rights to change design reserved.
Due to technical requirements components may contain dangerous substances. For information on the types in
question please contact your nearest Siemens Office, Semiconductor Group.
Siemens AG is an approved CECC manufacturer.
Packing
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For packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice
you for any costs incurred.
Components used in life-support devices or systems must be expressly authorized for such purpose!
Critical components1 of the Semiconductor Group of Siemens AG, may only be used in life-support devices or
systems2 with the express written approval of the Semiconductor Group of Siemens AG.
1 A critical component is a component used in a life-support device or system whose failure can reasonably be
expected to cause the failure of that life-support device or system, or to affect its safety or effectiveness of that
device or system.
2 Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or
maintain and sustain human life. If they fail, it is reasonable to assume that the health of the user may be en-
dangered.



Siemens Semiconductor Group PSB7280
PSB 7280
Table of Contents
Page
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Feature List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.6 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.7 System Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2
2.1
2.2
2.2.1
2.2.2
General Architecture and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Summary of the Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Audio Functions and Supplementary Features . . . . . . . . . . . . . . . . . . . 23
3
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
3.2
3.3
3.3.1
3.3.2
3.3.2.1
3.3.2.2
3.3.3
Interfaces and Memory Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
IOM®-2 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Serial Audio Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Parallel Host Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
External Memory Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Clock Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Shared Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Directly Accessible Register Bank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Input/Output Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
DSP/Host Com Area with a Multiplexed Host Interface . . . . . . . . . . . . . 35
Access to DSP/Host Com Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Mailbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
DSP/Host Com Area with a Demultiplexed Host Interface . . . . . . . . . . 43
4
4.1
4.2
4.3
4.4
4.4.1
4.4.2
4.5
4.5.1
Functional Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
PLL and Baud Rate Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Audio and Data Reception/Transmission . . . . . . . . . . . . . . . . . . . . . . . . . 50
HDLC Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
IOM®-2 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Monitor Channel Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
C/I Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Programming Indirectly Accessible Registers . . . . . . . . . . . . . . . . . . . . . . 83
Programming via Parallel Host Interface . . . . . . . . . . . . . . . . . . . . . . . . 83
Semiconductor Group
3 Data Sheet 1998-07-01





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