參數(shù)資料
型號： XRT83L314IB
廠商： EXAR CORP
元件分類： 數(shù)字傳輸電路
英文描述： 14-CHANNEL T1/E1/J1 LONG-HAUL/SHORT-HAUL LINE INTERFACE UNIT
中文描述： DATACOM, PCM TRANSCEIVER, PBGA304
封裝： TBGA-304
文件頁數(shù)： 5/84頁
文件大?。?/td> 631K
代理商： XRT83L314IB
XRT83L314
14-CHANNEL T1/E1/J1 LONG-HAUL/SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
II
F
IGURE
17. D
UAL
R
AIL
M
ODE
W
ITH
A
F
IXED
R
EPEATING
"0011" P
ATTERN
............................................................................................ 25
2.10 RXMUTE (RECEIVER LOS WITH DATA MUTING) ..................................................................................... 25
F
IGURE
18. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
R
X
MUTE F
UNCTION
................................................................................................... 25
3.0 TRANSMIT PATH LINE INTERFACE .................................................................................................26
F
IGURE
19. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
T
RANSMIT
P
ATH
......................................................................................................... 26
3.1 TCLK/TPOS/TNEG DIGITAL INPUTS ............................................................................................................ 26
F
IGURE
20. T
RANSMIT
D
ATA
S
AMPLED
ON
F
ALLING
E
DGE
OF
TCLK...................................................................................................... 26
F
IGURE
21. T
RANSMIT
D
ATA
S
AMPLED
ON
R
ISING
E
DGE
OF
TCLK........................................................................................................ 26
3.2 HDB3/B8ZS ENCODER .................................................................................................................................. 27
T
ABLE
7: T
IMING
S
PECIFICATIONS
FOR
TCLK/TPOS/TNEG.................................................................................................................. 27
T
ABLE
8: E
XAMPLES
OF
HDB3 E
NCODING
............................................................................................................................................ 27
T
ABLE
9: E
XAMPLES
OF
B8ZS E
NCODING
............................................................................................................................................. 27
3.3 TRANSMIT JITTER ATTENUATOR ............................................................................................................... 28
3.4 TAOS (TRANSMIT ALL ONES) ..................................................................................................................... 28
F
IGURE
22. TAOS (T
RANSMIT
A
LL
O
NES
) ............................................................................................................................................ 28
3.5 TRANSMIT DIAGNOSTIC FEATURES .......................................................................................................... 28
T
ABLE
10: M
AXIMUM
G
AP
W
IDTH
FOR
M
ULTIPLEXER
/M
APPER
A
PPLICATIONS
......................................................................................... 28
3.5.1 ATAOS (AUTOMATIC TRANSMIT ALL ONES)......................................................................................................... 29
F
IGURE
23. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
ATAOS F
UNCTION
..................................................................................................... 29
3.5.2 NETWORK LOOP UP CODE...................................................................................................................................... 29
F
IGURE
24. N
ETWORK
L
OOP
U
P
C
ODE
G
ENERATION
............................................................................................................................ 29
3.5.3 NETWORK LOOP DOWN CODE ............................................................................................................................... 29
F
IGURE
25. N
ETWORK
L
OOP
D
OWN
C
ODE
G
ENERATION
....................................................................................................................... 29
3.5.4 QRSS GENERATION.................................................................................................................................................. 30
3.6 TRANSMIT PULSE SHAPER AND FILTER ................................................................................................... 30
3.6.1 T1 LONG HAUL LINE BUILD OUT (LBO).................................................................................................................. 30
F
IGURE
26. L
ONG
H
AUL
L
INE
B
UILD
O
UT
WITH
-7.5
D
B A
TTENUATION
.................................................................................................... 30
T
ABLE
11: R
ANDOM
B
IT
S
EQUENCE
P
OLYNOMIALS
................................................................................................................................ 30
F
IGURE
27. L
ONG
H
AUL
L
INE
B
UILD
O
UT
WITH
-15
D
B A
TTENUATION
..................................................................................................... 31
F
IGURE
28. L
ONG
H
AUL
L
INE
B
UILD
O
UT
WITH
-22.5
D
B A
TTENUATION
.................................................................................................. 31
3.6.2 T1 SHORT HAUL LINE BUILD OUT (LBO) ............................................................................................................... 32
3.6.3 ARBITRARY PULSE GENERATOR FOR T1 AND E1............................................................................................... 32
F
IGURE
29. A
RBITRARY
P
ULSE
S
EGMENT
A
SSIGNMENT
......................................................................................................................... 32
3.7 DMO (DIGITAL MONITOR OUTPUT) ............................................................................................................. 32
T
ABLE
12: S
HORT
H
AUL
L
INE
B
UILD
O
UT
.............................................................................................................................................. 32
3.8 LINE TERMINATION (TTIP/TRING) ............................................................................................................... 33
F
IGURE
30. T
YPICAL
C
ONNECTION
D
IAGRAM
U
SING
I
NTERNAL
T
ERMINATION
......................................................................................... 33
4.0 T1/E1 APPLICATIONS ........................................................................................................................34
4.1 LOOPBACK DIAGNOSTICS .......................................................................................................................... 34
4.1.1 LOCAL ANALOG LOOPBACK .................................................................................................................................. 34
F
IGURE
31. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
L
OCAL
A
NALOG
L
OOPBACK
................................................................................................ 34
4.1.2 REMOTE LOOPBACK................................................................................................................................................ 34
F
IGURE
32. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
R
EMOTE
L
OOPBACK
.......................................................................................................... 34
4.1.3 DIGITAL LOOPBACK................................................................................................................................................. 35
F
IGURE
33. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
D
IGITAL
L
OOPBACK
........................................................................................................... 35
4.1.4 DUAL LOOPBACK ..................................................................................................................................................... 35
F
IGURE
34. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
D
UAL
L
OOPBACK
............................................................................................................... 35
4.2 84-CHANNEL T1/E1 MULTIPLEXER/MAPPER APPLICATIONS ................................................................. 36
F
IGURE
35. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
AN
84-C
HANNEL
A
PPLICATION
........................................................................................... 36
T
ABLE
13: C
HIP
S
ELECT
A
SSIGNMENTS
................................................................................................................................................ 36
4.3 LINE CARD REDUNDANCY .......................................................................................................................... 37
4.3.1 1:1 AND 1+1 REDUNDANCY WITHOUT RELAYS.................................................................................................... 37
4.3.2 TRANSMIT INTERFACE WITH 1:1 AND 1+1 REDUNDANCY.................................................................................. 37
F
IGURE
36. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
T
RANSMIT
I
NTERFACE
FOR
1:1
AND
1+1 R
EDUNDANCY
................................................ 37
4.3.3 RECEIVE INTERFACE WITH 1:1 AND 1+1 REDUNDANCY..................................................................................... 37
F
IGURE
37. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
R
ECEIVE
I
NTERFACE
FOR
1:1
AND
1+1 R
EDUNDANCY
.................................................. 38
4.3.4 N+1 REDUNDANCY USING EXTERNAL RELAYS ................................................................................................... 38
4.3.5 TRANSMIT INTERFACE WITH N+1 REDUNDANCY ................................................................................................ 39
F
IGURE
38. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
T
RANSMIT
I
NTERFACE
FOR
N+1 R
EDUNDANCY
............................................................ 39
4.3.6 RECEIVE INTERFACE WITH N+1 REDUNDANCY................................................................................................... 40
F
IGURE
39. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
R
ECEIVE
I
NTERFACE
FOR
N+1 R
EDUNDANCY
.............................................................. 40
4.4 POWER FAILURE PROTECTION .................................................................................................................. 41
4.5 OVERVOLTAGE AND OVERCURRENT PROTECTION ............................................................................... 41
4.6 NON-INTRUSIVE MONITORING .................................................................................................................... 41
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