DS3171/DS3172/DS3173/DS3174
TABLE OF CONTENTS
1
2
3
BLOCK DIAGRAMS
APPLICATIONS
FEATURE DETAILS
3
12
13
3.1 GLOBAL FEATURES........................................................................................................................................ 13
3.2 RECEIVE DS3/E3 LIU FEATURES .................................................................................................................. 13
3.3 RECEIVE DS3/E3 FRAMER FEATURES ........................................................................................................... 13
3.4
TRANSMIT DS3/E3 FORMATTER FEATURES.................................................................................................... 13
3.5 TRANSMIT DS3/E3 LIU FEATURES ................................................................................................................ 14
3.6
3.7
3.8
JITTER ATTENUATOR FEATURES..................................................................................................................... 14
CLOCK RATE ADAPTER FEATURES ................................................................................................................. 14
HDLC OVERHEAD CONTROLLER FEATURES................................................................................................... 14
3.9 FEAC CONTROLLER FEATURES..................................................................................................................... 14
3.10 TRAIL TRACE BUFFER FEATURES ................................................................................................................... 14
3.11 BIT ERROR RATE TESTER (BERT) FEATURES ................................................................................................ 15
3.12 LOOPBACK FEATURES ................................................................................................................................... 15
3.13 MICROPROCESSOR INTERFACE FEATURES ..................................................................................................... 15
3.14 TEST FEATURES............................................................................................................................................ 15
4
5
6
STANDARDS COMPLIANCE
ACRONYMS AND GLOSSARY
MAJOR OPERATIONAL MODES
16
17
18
6.1 DS3/E3 SCT MODE ..................................................................................................................................... 18
6.2 DS3/E3 CLEAR CHANNEL MODE ................................................................................................................... 20
7
8
MAJOR LINE INTERFACE OPERATING MODES
21
7.1 DS3HDB3/B3ZS/AMI LIU MODE ................................................................................................................. 21
7.2 HDB3/B3ZS/AMI NON-LIU LINE INTERFACE MODE ....................................................................................... 23
7.3 UNI LINE INTERFACE MODE........................................................................................................................... 24
PIN DESCRIPTIONS
25
8.1 SHORT PIN DESCRIPTIONS............................................................................................................................. 25
8.2 DETAILED PIN DESCRIPTIONS......................................................................................................................... 28
8.3 PIN FUNCTIONAL TIMING................................................................................................................................ 36
8.3.1 Line IO.................................................................................................................................................. 36
8.3.2 DS3/E3 Framing Overhead Functional Timing .................................................................................... 39
8.3.3 DS3/E3 Serial Data Interface............................................................................................................... 40
8.3.4 Microprocessor Interface Functional Timing........................................................................................ 42
8.3.5 JTAG Functional Timing....................................................................................................................... 47
9
INITIALIZATION AND CONFIGURATION
48
9.1
MONITORING AND DEBUGGING....................................................................................................................... 49
10 FUNCTIONAL DESCRIPTION
50
10.1 PROCESSOR BUS INTERFACE......................................................................................................................... 50
10.1.1 8/16 Bit Bus Widths.............................................................................................................................. 50
10.1.2 Ready Signal (RDY) ............................................................................................................................. 50
10.1.3 Byte Swap Modes ................................................................................................................................ 50
10.1.4 Read-Write / Data Strobe Modes......................................................................................................... 50
10.1.5 Clear on Read / Clear on Write Modes................................................................................................ 50
10.1.6 Global Write Method ............................................................................................................................ 51
10.1.7 Interrupt and Pin Modes....................................................................................................................... 51
10.1.8 Interrupt Structure ................................................................................................................................ 51
10.2 CLOCKS........................................................................................................................................................ 52
10.2.1 Line Clock Modes................................................................................................................................. 52
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