
DS26401 Octal T1/E1/J1 Framer
2
TABLE OF CONTENTS
1.
APPLICABLE STANDARDS........................................................................................................7
2.
FEATURES ..................................................................................................................................8
F
RAMER
/F
ORMATTER
.....................................................................................................................................8
S
YSTEM
I
NTERFACE
........................................................................................................................................8
HDLC C
ONTROLLERS
....................................................................................................................................9
T
EST AND
D
IAGNOSTICS
.................................................................................................................................9
C
ONTROL
P
ORT
..............................................................................................................................................9
2.1
2.2
2.3
2.4
2.5
3.
BLOCK DIAGRAMS...................................................................................................................10
4.
SIGNAL LIST (SORTED BY SIGNAL NAME)............................................................................13
5.
SIGNAL DESCRIPTIONS...........................................................................................................17
R
ECEIVE
F
RAMER
S
IGNALS
...........................................................................................................................17
T
RANSMIT
F
RAMER
S
IGNALS
.........................................................................................................................19
P
ARALLEL
C
ONTROL
P
ORT
............................................................................................................................20
S
YSTEM
I
NTERFACE
......................................................................................................................................21
T
EST
............................................................................................................................................................22
5.1
5.2
5.3
5.4
5.5
6.
REGISTER MAP.........................................................................................................................23
7.
GLOBAL FUNCTIONS...............................................................................................................24
G
LOBAL
R
EGISTERS
.....................................................................................................................................24
G
LOBAL
R
EGISTER
D
ESCRIPTION AND
O
PERATION
........................................................................................25
IBO M
ULTIPLEXER
........................................................................................................................................27
I
NTERRUPT
T
REE
..........................................................................................................................................37
7.1
7.2
7.3
7.4
8.
T1 RECEIVER............................................................................................................................38
T1 R
ECEIVER
R
EGISTER
M
AP
.......................................................................................................................38
T1 R
ECEIVE
F
RAMER
D
ESCRIPTION AND
O
PERATION
.....................................................................................43
R
ECEIVE
M
ASTER
-M
ODE
R
EGISTER
..............................................................................................................44
I
NTERRUPT
I
NFORMATION
R
EGISTER
.............................................................................................................44
T1 R
ECEIVE
C
ONTROL
R
EGISTERS
...............................................................................................................45
H.100 (CT B
US
) C
OMPATIBILITY
...................................................................................................................50
T1 R
ECEIVE
S
TATUS AND
I
NFORMATION
........................................................................................................52
T1 R
ECEIVE
-S
IDE
D
IGITAL
M
ILLIWATT
C
ODE
G
ENERATION
............................................................................63
T1 E
RROR
C
OUNT
R
EGISTERS
......................................................................................................................64
8.10
DS0 M
ONITORING
F
UNCTION
....................................................................................................................69
8.11
T1 R
ECEIVE
S
IGNALING
O
PERATION
..........................................................................................................70
8.12
T1 R
ECEIVE
P
ER
-C
HANNEL
I
DLE
C
ODE
I
NSERTION
....................................................................................76
8.13
R
ECEIVE
-C
HANNEL
B
LOCKING
O
PERATION
................................................................................................77
8.14
R
ECEIVE
E
LASTIC
S
TORES
O
PERATION
.....................................................................................................78
8.15
F
RACTIONAL
T1 S
UPPORT
(G
APPED
-C
LOCK
M
ODE
)...................................................................................82
8.16
T1 B
IT
-O
RIENTED
C
ODE
(BOC) C
ONTROLLER
...........................................................................................83
8.17
R
ECEIVE
SLC-96 O
PERATION
...................................................................................................................85
8.18
R
ECEIVE
FDL...........................................................................................................................................86
8.19
P
ROGRAMMABLE
I
N
-B
AND
L
OOP
-C
ODE
D
ETECTION
...................................................................................87
8.20
R
ECEIVE
HDLC C
ONTROLLER
...................................................................................................................92
8.21
I
NTERLEAVED
PCM B
US
O
PERATION
(IBO).............................................................................................100
8.22
I
NTERFACING THE
T1 R
X
F
RAMER TO THE
BERT .....................................................................................102
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
9.
T1 TRANSMIT..........................................................................................................................104
T1 T
RANSMIT
R
EGISTER
M
AP
.....................................................................................................................104
9.1