PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 5

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PEB2085

Manufacturer Part Number
PEB2085
Description
ISDN SubscribernAccess Controller
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet

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Table of Contents
2.8.1
2.8.2
2.8.3
2.8.4
2.8.5
2.8.5.1
2.8.5.2
2.8.5.3
3
3.1
3.2
3.2.1
3.2.2
3.2.2.1
3.2.2.2
3.2.2.3
3.2.3
3.3
3.3.1
3.3.2
3.4
3.5
4
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
Semiconductor Group
Message Transfer Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Protocol Operations (auto mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Reception of Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Transmission of Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Documentation of the Auto Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Legend of the Auto-Mode-Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Additional General Considerations when Using the Auto Mode . . . . . . . . . . . . . 121
Dealing with Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Operational Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Microprocessor Interface Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Interrupt Structure and Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Activation/Deactivation of IOM
Activation/Deactivation of S/T Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Layer-1 Command/Indication Codes and State Diagrams in TE/LT-T Modes . . . 171
Layer-1 Command/Indication Codes and State Diagrams in LT-S Mode . . . . . . 177
Layer-1 Command/Indication Codes and State Diagrams in NT Mode . . . . . . . . 180
Example of Activation/Deactivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Control of Layer-2 Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
HDLC Frame Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
HDLC Frame Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Detailed Register Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
HDLC Operation and Status Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Receive FIFO RFIFO Read Address 00-1FH . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Transmit FIFO XFIFO Write Address 00-1FH . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Interrupt Status Register ISTA Read Address 20H . . . . . . . . . . . . . . . . . . . . . . . 200
Mask Register MASK Write Address 20H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Status Register STAR Read Address 21H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Command Register CMDR Write Address 21H . . . . . . . . . . . . . . . . . . . . . . . . . . 203
®
Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
5
General Information
Page

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