ICs for Communications
Multipoint Switching and Conferencing Unit - Attenuation
MUSAC-A
PEB 2445 Version 1.2
Data Sheet 02.96
PEB 2445
Revision History:
Current Version: 02.96
Previous Version: Digital Switching and Conferencing IC’s Data Book 01.94
Page
(in Version
01.94)
220
220
224, 227,
243
249
–
Page
(in new
Version)
11
11
16, 19, 36
40
56
59
59
60
–
–
60
66
Subjects (major changes since last revision)
Version 1.2
P-DIP-40 package not further available
Motorola Mode not available
Figure (Initializing the
…
4096-kHz Device Clock) corrected
Abs. Max. Ratings:
I
LPD
defintion
t
WD min.
= 20 ns
t
s min.
= 15 ns
t
SS8 min.
= 20 ns,
t
SH4 max.
=
t
CP4
−
10 ns +
t
CP4H
t
SPL min
.
= 100 ns added
Appendix: Design sheets added
Edition 02.96
This edition was realized using the software system FrameMaker
®
.
Published by Siemens AG,
Bereich Halbleiter, Marketing-
Kommunikation, Balanstraße 73,
81541 München
©
Siemens AG 1996.
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.
For questions on technology, delivery and prices please contact the Semiconductor Group Offices in Germany or the Siemens Companies
and Representatives worldwide (see address list).
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
Please use the recycling operators known to you. We can also help you – get in touch with your nearest sales office. By agreement we
will take packing material back, if it is sorted. You must bear the costs of transport.
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 in-
curred.
Components used in life-support devices or systems must be expressly authorized for such purpose!
Critical components
1
of the Semiconductor Group of Siemens AG, may only be used in life-support devices or systems
2
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 hu-
man life. If they fail, it is reasonable to assume that the health of the user may be endangered.
PEB 2445
Table of Contents
1
1.1
1.2
1.3
1.4
1.5
1.6
2
2.1
2.2
3
3.1
3.2
3.3
3.4
4
4.1
4.2
4.3
4.4
4.5
4.6
4.6.1
4.6.2
5
5.1
5.2
5.3
5.3.1
5.3.1.1
5.3.2
5.3.3
Page
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Functional Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Device Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
System Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Functional Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Basic Functional Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Microprocessor Interface and Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Operational Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Reset State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Initialization Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Operation with a 4096-kHz Device Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Standby Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Detailed Register Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Mode Register (MOD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Status Register (STA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Conference Status Register (CST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Conference Mask Register (CMR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Indirect Access Register (IAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Indirect Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Configuration Register (CFR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Clock Shift Register (CSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Capacitances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
AC-Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Microprocessor Interface Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Intel Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
PCM Interface Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Clock and Synchronization Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Semiconductor Group
3
02.96
PEB 2445
Table of Contents
6
7
7.1
7.2
7.3
7.4
Page
Package Outlines
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Appendix
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Initialization for Conferencing in a PBX . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Programming a Conference in a PBX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Programming Procedure for Switching TS’s . . . . . . . . . . . . . . . . . . . . . . . . .68
Programming Procedure for a PBX Conference . . . . . . . . . . . . . . . . . . . . . .69
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, FALC
™
54, IWE
™
, SARE
™
, UTPT
™
, ASM
™
, ASP
™
are trademarks of Siemens AG.
Purchase of Siemens
I
2
C components conveys a license under the Philips’
I
2
C patent to use the components in
the
I
2
C-system provided the system conforms to the
I
2
C specifications defined by Philips. Copyright Philips 1983.
Semiconductor Group
4
02.96
PEB 2445
Overview
1
Overview
A Complete Family of Efficient Solutions
If the issue is digital switching and conferencing, the solution is flexibility, capacity, and
economy.
Siemens Semiconductor offers the most economical answer to all conceivable
applications in this field. Our complete family of switching network devices satisfies even
the most rigorous switching demands.
A Complete Family of Efficient Solutions
Take our
MTSC (Memory Time Switch CMOS) PEB 2045
with a switching capability of
512 incoming PCM channels to 256 outgoing PCM channels. It has the perfect size to
economically build medium sized switches. The design of a non-blocking switch for 512
PCM channels is possible with a simple parallel configuration with a second MTSC.
If you need a non-blocking switch for up to 256 channels, we offer a smaller version of
the MTSC, the
MTSS (Memory Time Switch Small) PEB 2046.
And the
MTSL
(Memory Time Switch Large) PEB 2047,
the largest in our family, is capable of
switching 1024 PCM channels.
Siemens also supplies the best solution for conferencing, our
MUSAC (Multipoint
Switching and Conferencing Unit) PEB 2245
performs the complete switching
functions of the MTSC, and offers a signal processor for handling up to 64 conferencing
channels in any combination. The input and output channels can also be attenuated
individually to achieve best transmission quality.
The
MUSAC-A (Multipoint Switching and Conferencing Unit) PEB 2445
is an
upward compatible device to the MTSC and MUSAC. It offers in addition the attenuation
and amplification of every time slot.
Pin compatible device allow simplicity in hardware and software design. To allow for
more flexibility, the PCM data rate can be 2, 4, or 8 Mbit/s – configurable also for mixed
use.
Semiconductor Group
5
02.96
京公网安备 11010802033920号
EEWORLD
