PEB2086NV1.1 ,ISAC-S (ISDN Subscriber Access Contro...Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
PEB2086NV1.1 ,ISAC-S (ISDN Subscriber Access Contro...characteristics.Terms of delivery and rights to change design reserved.For questions on technology, ..
PEB2086NV1.1 ,ISAC-S (ISDN Subscriber Access Contro...Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
PEB2086NV1.1 ,ISAC-S (ISDN Subscriber Access Contro...characteristics apply at T = 25 °C and the given supply voltage.AOperating RangeIn the operating ra ..
PEB2086NV1.1 ,ISAC-S (ISDN Subscriber Access Contro...applications, processes and circuits implemented within components or assemblies.The information de ..
PEB2086N-V1.1 ,ISAC-S (ISDN Subscriber Access Contro...applications, processes and circuits implemented within components or assemblies.The information de ..
PIC16F883 , 28/40/44-Pin, Enhanced Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology
PIC17C42A , High-Performance 8-Bit CMOS EPROM/ROM Microcontroller
PIC18F2525-I/SO , 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PIC18F2620-I/SO , 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PIC18F2620-I/SO , 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PIC18F2620-I/SP , 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PEB2085N V2.3-PEB2085NV2.3-PEB2085N-V2.3-PEB2085PV2.3-PEB2085P-V2.3-PEB2086HV1.1-PEB2086H-V1.1-PEB2086HV1.1 .-PEB2086HV1.4-PEB2086NV1.1-PEB2086N-V1.1-PEB2086NV1.1 ...-PEB2086NV1.3-PEB2086NV1.4-PEB2086N-V1.4
ISAC-S (ISDN Subscriber Access Contro...
ICs for Communications
ISDN SubscribernAccess Controller
ISAC.-S
PEB 2085
PEB 2086
User’s Manual10.94
Data Classification
Maximum RatingsMaximum ratings are absolute ratings; exceeding only one of these values may cause
irreversible damage to the integrated circuit.
CharacteristicsThe listed characteristics are ensured over the operating range of the integrated circuit.
Typical characteristics specify mean values expected over the production spread. If not
otherwise specified, typical characteristics apply at TA = 25 °C and the given supply voltage.
Operating RangeIn the operating range the functions given in the circuit description are fulfilled.
For detailed technical information about
“Processing Guidelines” and “Quality
Assurance” for ICs, see our “Product Overview”.
Edition 10.94This edition was realized using the software system FrameMaker.
Published by Siemens AG, Bereich Halbleiter, Marketing-Kommunikation,
Balanstraße 73, D-81541 München.© Siemens AG 1994. All Rights Reserved.
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.
PackingPlease 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 in-
General Information
Table of ContentsPage
1Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.1Features of PEB 2085 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.1.1Pin Definitions and Functions of PEB 2085 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.1.2Logic Symbol of PEB 2085 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.2 Features of PEB 2086 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.2.1Pin Definitions and Functions of PEB 2086 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1.2.2Logic Symbol of PEB 2086 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
1.3Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
1.4System Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.4.1ISDN Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.4.2Microprocessor Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312.1General Functions and Device Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.2Interface and Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.2.1IOM®-1 Interface Mode (ADF2:IMS=0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.2.2IOM®-2 Interface Mode (ADF2:IMS=1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
2.3IOM®-1 Mode Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2.3.1IOM®-1 Frame Structure / Timing Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
2.3.2IOM®-1 Interface Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.3.3SLD Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
2.3.4SSI (Serial Port A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
2.3.5B-Channel Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
2.3.6mP Access to B Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
2.3.7MONITOR Channel Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
2.3.8Command/Indicate (C/I) Channel Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
2.4IOM®-2 Mode Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
2.4.1IOM®-2 Frame Structure / Timing Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
2.4.2IOM®-2 Interface Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
2.4.3mP Access to B and IC Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
General Information
Table of ContentsPage2.4.5C/I Channel Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
2.4.6TIC Bus Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
2.5Layer-1 Functions for the S/T Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
2.5.1S/T Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
2.5.2Analog Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
2.5.3S/T Interface Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
2.5.3.1S/T Interface Pre-Filter (PEB 2085 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
2.5.3.2External Protection Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
2.5.4Receiver Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
2.5.4.1Receive Signal Oversampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
2.5.4.2Adaptive Receiver Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
2.5.4.3Level Detection Power Down (TE mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
2.5.5Timing Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
2.5.6Activation/Deactivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
2.5.6.1FAinfA_1fr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
2.5.6.2FAinfB_1fr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
2.5.6.3FAinfD_1fr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
2.5.6.4FAinfA_kfr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
2.5.6.5FAinfB_kfr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
2.5.6.6FAinfD_kfr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
2.5.6.7FAregain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
2.5.7D-Channel Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
2.5.8S- and Q-Channel Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
2.5.9S-Frame and Multiframe Synchronization (PEB 2086 only) . . . . . . . . . . . . . . . . 102
2.5.9.1S-Frame Start (LT-S, NT mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
2.5.9.2Multiframe / Superframe Synchronization (LT-S, NT-Mode) . . . . . . . . . . . . . . . . 102
2.5.9.3M-Bit Output (TE Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
2.6Terminal Specific Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
2.7Test Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
General Information
Table of ContentsPage2.8.1Message Transfer Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
2.8.2Protocol Operations (auto mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
2.8.3Reception of Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
2.8.4Transmission of Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
2.8.5Documentation of the Auto Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
2.8.5.1Legend of the Auto-Mode-Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
2.8.5.2Additional General Considerations when Using the Auto Mode . . . . . . . . . . . . . 121
2.8.5.3Dealing with Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Operational Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
3.1Microprocessor Interface Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
3.2Interrupt Structure and Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
3.2.1Activation/Deactivation of IOM® Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
3.2.2Activation/Deactivation of S/T Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
3.2.2.1Layer-1 Command/Indication Codes and State Diagrams in TE/LT-T Modes . . . 171
3.2.2.2Layer-1 Command/Indication Codes and State Diagrams in LT-S Mode . . . . . . 177
3.2.2.3Layer-1 Command/Indication Codes and State Diagrams in NT Mode . . . . . . . . 180
3.2.3Example of Activation/Deactivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
3.3Control of Layer-2 Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
3.3.1HDLC Frame Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
3.3.2HDLC Frame Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
3.4Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
3.5Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Detailed Register Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1954.1HDLC Operation and Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
4.1.1Receive FIFO RFIFO Read Address 00-1FH . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
4.1.2Transmit FIFO XFIFO Write Address 00-1FH . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
4.1.3Interrupt Status Register ISTA Read Address 20H . . . . . . . . . . . . . . . . . . . . . . . 200
4.1.4Mask Register MASK Write Address 20H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
4.1.5Status Register STAR Read Address 21H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
