DS2154 Dallas Semiconducotr, DS2154 Datasheet - Page 2

• Manufacturer Part Number: DS2154
• Description: Enhanced E1 Single Chip Transceiver
• Manufacturer: Dallas Semiconducotr

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2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0 ELASTIC STORES OPERATION ................................................................................. 56
11.0 ADDITIONAL (Sa) AND INTERNATIONAL (Si) BIT OPERATION .............................. 57
INTRODUCTION ............................................................................................................. 4
New Features................................................................................................................................... 4
Block Diagram ................................................................................................................................ 5
Pin List ............................................................................................................................................ 7
Pin Description.............................................................................................................................. 10
Register Map ................................................................................................................................. 15
PARALLEL PORT ........................................................................................................ 20
CONTROL, ID, AND TEST REGISTERS...................................................................... 20
SYNC/RESYNC Criteria.............................................................................................................. 22
Framers Loopback......................................................................................................................... 27
Automatic Alarm Generation........................................................................................................ 28
Power-up Sequence....................................................................................................................... 30
Remote Loopback ......................................................................................................................... 31
Local Loopback............................................................................................................................. 31
STATUS AND INFORMATION REGISTERS................................................................ 32
CRC 4 SYNC Counter .................................................................................................................. 35
Alarm Criteria ............................................................................................................................... 36
ERROR COUNT REGISTERS ...................................................................................... 40
BPV or Code Violation Counter ................................................................................................... 40
CRC4 Error Counter ..................................................................................................................... 41
E-bit Counter................................................................................................................................. 41
FAS Error Counter ........................................................................................................................ 42
DSO MONITORING FUNCTION ................................................................................... 43
SIGNALING OPERATION ............................................................................................ 46
Processor Based Signaling ............................................................................................................ 46
Hardware Based Signaling............................................................................................................ 49
PER-CHANNEL CODE GENERATION ........................................................................ 51
Transmit Side Code Generation.................................................................................................... 51
Receive Side Code Generation ..................................................................................................... 53
CLOCK BLOCKING REGISTERS ................................................................................ 54
Hardware Scheme ......................................................................................................................... 57
Internal Register Scheme Based on Double-Frame ...................................................................... 57
Internal Register Scheme Based on CRC4 Multiframe ................................................................ 60
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DS2154