
DS2156
5 of 262
23.3.2
Transmit Open-Circuit Detector.........................................................................................................151
23.3.3
Transmit BPV Error Insertion............................................................................................................151
23.3.4
Transmit G.703 Synchronization Signal (E1 Mode)...........................................................................151
23.4
MCLK P
RESCALER
.................................................................................................................................152
23.5
J
ITTER
A
TTENUATOR
...............................................................................................................................152
23.6
CMI (C
ODE
M
ARK
I
NVERSION
) O
PTION
.................................................................................................152
F
IGURE
23-2. CMI C
ODING
..................................................................................................................................152
23.7
LIU C
ONTROL
R
EGISTERS
......................................................................................................................153
23.8
R
ECOMMENDED
C
IRCUITS
.......................................................................................................................160
F
IGURE
23-3. B
ASIC
I
NTERFACE
...........................................................................................................................160
F
IGURE
23-4. P
ROTECTED
I
NTERFACE
U
SING
I
NTERNAL
R
ECEIVE
T
ERMINATION
..............................................161
23.9
C
S
PECIFICATIONS
.................................................................................................................162
T
ABLE
23-A. T
RANSFORMER
S
PECIFICATIONS
.....................................................................................................162
F
IGURE
23-5. E1 T
RANSMIT
P
ULSE
T
EMPLATE
....................................................................................................163
F
IGURE
23-6. T1 T
RANSMIT
P
ULSE
T
EMPLATE
....................................................................................................163
F
IGURE
23-7. J
ITTER
T
OLERANCE
.........................................................................................................................164
F
IGURE
23-8. J
ITTER
T
OLERANCE
(E1 M
ODE
)......................................................................................................164
F
IGURE
23-9. J
ITTER
A
TTENUATION
(T1 M
ODE
)..................................................................................................165
F
IGURE
23-10. J
ITTER
A
TTENUATION
(E1 M
ODE
)................................................................................................165
F
IGURE
23-11. O
PTIONAL
C
RYSTAL
C
ONNECTIONS
.............................................................................................166
24.
UTOPIA BACKPLANE INTERFACE...................................................................................................167
D
ESCRIPTION
...........................................................................................................................................167
24.1.1
List of Applicable Standards...............................................................................................................167
24.1.2
Acronyms and Definitions...................................................................................................................167
24.2
UTOPIA C
LOCK
M
ODES
.........................................................................................................................168
F
IGURE
24-1. UTOPIA C
LOCKING
C
ONFIGURATIONS
.........................................................................................168
24.3
F
ULL
T1/E1 M
ODE AND
C
LEAR
-C
HANNEL
E1 M
ODE
............................................................................168
24.4
F
RACTIONAL
T1/E1
MODE
......................................................................................................................169
T
ABLE
24-A. UTOPIA C
LOCK
M
ODE
C
ONFIGURATION
......................................................................................169
24.5
T
RANSMIT
O
PERATION
............................................................................................................................170
24.5.1
UTOPIA Side Transmit: Muxed Mode with One Transmit CLAV......................................................170
F
IGURE
24-2. P
OLLING
P
HASE AND
S
ELECTION
P
HASE AT
T
RANSMIT
I
NTERFACE
..............................................171
F
IGURE
24-3. E
ND AND
R
ESTART OF
C
ELL AT
T
RANSMIT
I
NTERFACE
................................................................172
F
IGURE
24-4. T
RANSMISSION TO
PHY P
AUSED FOR
T
HREE
C
YCLES
...................................................................173
24.5.2
UTOPIA Side Transmit: Direct Status Mode (Multitransmit CLAV).................................................173
F
IGURE
24-5. E
XAMPLE OF
D
IRECT
S
TATUS
I
NDICATION
, T
RANSMIT
D
IRECTION
..............................................174
24.5.3
Transmit Processing...........................................................................................................................175
F
IGURE
24-6. T
RANSMIT
C
ELL
F
LOW
...................................................................................................................175
24.6
R
ECEIVE
O
PERATION
...............................................................................................................................176
24.6.1
Receive Processing.............................................................................................................................176
F
IGURE
24-7. C
ELL
-D
ELINEATION
S
TATE
D
IAGRAM
...........................................................................................176
F
IGURE
24-8. H
EADER
C
ORRECTION
S
TATE
M
ACHINE
........................................................................................177
24.6.2
UTOPIA Side Receive: Muxed Mode with One Receive CLAV..........................................................178
F
IGURE
24-9. P
OLLING
P
HASE AND
S
ELECTION AT
R
ECEIVE
I
NTERFACE
............................................................178
F
IGURE
24-10. E
ND AND
R
ESTART OF
C
ELL
T
RANSMISSION AT
R
ECEIVE
I
NTERFACE
........................................179
24.6.3
UTOPIA Side Receive: Direct Status Mode (Multireceive CLAV).....................................................179
F
IGURE
24-11. E
XAMPLE OF
D
IRECT
S
TATUS
I
NDICATION
, R
ECEIVE
D
IRECTION
...............................................180
24.7
R
EGISTER
D
EFINITIONS
...........................................................................................................................181
24.8
R
ECEIVE
FIFO O
VERRUN
........................................................................................................................192
24.9
UTOPIA D
IAGNOSTIC
L
OOPBACK
..........................................................................................................192
24.1
25.
PROGRAMMABLE IN-BAND LOOP CODE GENERATION AND DETECTION........................193