
Preliminary Information
MT9071
21
8.4.3
8.5
The Boundary-Scan Register......................................................................................................... 59
Boundary Scan Description Language (BSDL) File ...............................................................................59
9.0
Common Channel Signaling (CCS) Operation............................................................59
9.1
T1 CCS & ST-BUS CSTi/CSTo..............................................................................................................60
9.1.1
T1 CCS & ST-BUS CSTi/CSTo Timeslot Relationship................................................................... 60
9.2
E1 CCS ..................................................................................................................................................60
9.2.1
T1 CCS & ST-BUS CSTi/CSTo Timeslot Relationship................................................................... 61
10.0 CAS Operation...............................................................................................................61
10.1 T1 CAS...................................................................................................................................................61
10.1.1
T1 CAS Register and ST-BUS Access........................................................................................... 61
10.2 E1 CAS...................................................................................................................................................62
10.2.1
E1 CAS Register and ST-BUS Access........................................................................................... 63
11.0 Data Link Operation ......................................................................................................65
11.1 T1 Data Link Operation..........................................................................................................................65
11.1.1
T1 Bit-Oriented Messaging............................................................................................................. 65
11.1.2
T1 HDLC......................................................................................................................................... 67
11.2 E1 Data Link Operation..........................................................................................................................67
11.2.1
E1 Data Link National Bit Buffer Access ........................................................................................ 67
11.2.2
Data Link Pin Data (RxD) Received from PCM30 - With No Elastic Buffer.................................... 68
11.2.3
E1 Data Link ST-BUS Access........................................................................................................ 68
11.2.4
E1 Data Link HDLC Access............................................................................................................ 68
11.2.5
E1 Data Link 5 Bit Register Access................................................................................................ 69
12.0 HDLC...............................................................................................................................69
12.1 HDLC Overview......................................................................................................................................69
12.1.1
HDLC Frame Structure.................................................................................................................. 69
12.1.2
Data Transparency (Zero Insertion/Deletion)................................................................................. 70
12.1.3
Invalid Frames................................................................................................................................ 70
12.1.4
Frame Abort.................................................................................................................................... 70
12.1.5
Interframe Time Fill and Link Channel States ................................................................................ 70
12.1.6
Go-Ahead....................................................................................................................................... 71
12.2 HDLC Functional Description.................................................................................................................71
12.2.1
HDLC Transmitter........................................................................................................................... 71
12.2.2
HDLC Receiver............................................................................................................................... 72
13.0 Transparent Mode Operation........................................................................................73
13.1 T1 Transparent Mode Operation............................................................................................................73
13.2 E1 Transparent Mode Operation............................................................................................................74
13.2.1
Transmit Timeslot 0 all Frames from DSTi to PCM30.................................................................... 74
13.2.2
Receive Timeslot 0 all Frames from PCM30 to DSTo.................................................................... 74