
DS2156
3 of 262
8.2
T1 T
RANSMIT
T
RANSPARENCY
.....................................................................................................................57
8.3
AIS-CI
AND
RAI-CI G
ENERATION AND
D
ETECTION
....................................................................................57
8.4
T1 R
ECEIVE
-S
IDE
D
IGITAL
-M
ILLIWATT
C
ODE
G
ENERATION
.......................................................................58
T
ABLE
8-A. T1 A
LARM
C
RITERIA
..........................................................................................................................60
9.
E1 FRAMER/FORMATTER CONTROL AND STATUS REGISTERS..............................................61
9.1
E1 C
ONTROL
R
EGISTERS
...............................................................................................................................61
T
ABLE
9-A. E1 S
YNC
/R
ESYNC
C
RITERIA
...............................................................................................................62
9.2
A
UTOMATIC
A
LARM
G
ENERATION
................................................................................................................65
9.3
E1 I
NFORMATION
R
EGISTERS
........................................................................................................................66
T
ABLE
9-B. E1 A
LARM
C
RITERIA
...........................................................................................................................67
10.
COMMON CONTROL AND STATUS REGISTERS ............................................................................68
T1/E1 S
TATUS
R
EGISTERS
........................................................................................................................69
10.1
11.
12.
I/O PIN CONFIGURATION OPTIONS...................................................................................................75
LOOPBACK CONFIGURATION ............................................................................................................77
P
ER
-C
HANNEL
L
OOPBACK
........................................................................................................................79
12.1
13.
ERROR COUNT REGISTERS .................................................................................................................81
L
INE
-C
ODE
V
IOLATION
C
OUNT
R
EGISTER
(LCVCR)...............................................................................82
13.1.1
T1 Operation.........................................................................................................................................82
T
ABLE
13-A. T1 L
INE
-C
ODE
V
IOLATION
C
OUNTING
O
PTIONS
..............................................................................82
13.1.2
E1 Operation.........................................................................................................................................82
T
ABLE
13-B. E1 L
INE
-C
ODE
V
IOLATION
C
OUNTING
O
PTIONS
..............................................................................82
13.2
P
ATH
C
ODE
V
IOLATION
C
OUNT
R
EGISTER
(PCVCR) ..............................................................................84
13.2.1
T1 Operation.........................................................................................................................................84
T
ABLE
13-C. T1 P
ATH
C
ODE
V
IOLATION
C
OUNTING
A
RRANGEMENTS
................................................................84
13.2.2
E1 Operation.........................................................................................................................................84
13.3
F
RAMES
O
UT
-
OF
-S
YNC
C
OUNT
R
EGISTER
(FOSCR)................................................................................85
13.3.1
T1 Operation.........................................................................................................................................85
T
ABLE
13-D. T1
F
RAMES
O
UT
-
OF
-S
YNC
C
OUNTING
A
RRANGEMENTS
.................................................................85
13.3.2
E1 Operation.........................................................................................................................................85
13.4
E-B
IT
C
OUNTER
(EBCR)...........................................................................................................................86
13.1
14.
15.
DS0 MONITORING FUNCTION.............................................................................................................87
SIGNALING OPERATION.......................................................................................................................89
R
ECEIVE
S
IGNALING
.................................................................................................................................89
F
IGURE
15-1. S
IMPLIFIED
D
IAGRAM OF
R
ECEIVE
S
IGNALING
P
ATH
......................................................................89
15.1.1
Processor-Based Signaling...................................................................................................................89
15.1.2
Hardware-Based Receive Signaling.....................................................................................................90
15.2
T
RANSMIT
S
IGNALING
...............................................................................................................................95
F
IGURE
15-2. S
IMPLIFIED
D
IAGRAM OF
T
RANSMIT
S
IGNALING
P
ATH
...................................................................95
15.2.1
Processor-Based Mode.........................................................................................................................95
T
ABLE
15-A. T
IME
S
LOT
N
UMBERING
S
CHEMES
...................................................................................................96
15.2.2
Software Signaling Insertion-Enable Registers, E1 CAS Mode............................................................99
15.2.3
Software Signaling Insertion-Enable Registers, T1 Mode..................................................................101
15.2.4
Hardware-Based Mode.......................................................................................................................101
15.1
16.
PER-CHANNEL IDLE CODE GENERATION....................................................................................102
T
ABLE
16-A. I
DLE
-C
ODE
A
RRAY
A
DDRESS
M
APPING
.........................................................................................102
16.1
I
DLE
-C
ODE
P
ROGRAMMING
E
XAMPLES
..................................................................................................103
T
ABLE
16-B. GRIC
AND
GTIC F
UNCTIONS
.........................................................................................................104