參數(shù)資料
型號(hào): XRT82L38
廠商: Exar Corporation
英文描述: Octal E1/T1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(八 T1/E1/J1線收發(fā)器(帶時(shí)鐘恢復(fù)和振蕩衰減器))
中文描述: 八進(jìn)制E1/T1/J1線收發(fā)器時(shí)鐘恢復(fù)和抖動(dòng)衰減器(八的T1/E1/J1線收發(fā)器(帶時(shí)鐘恢復(fù)和振蕩衰減器))
文件頁(yè)數(shù): 24/54頁(yè)
文件大小: 356K
代理商: XRT82L38
XRT82L38
OCTAL E1/T1/J1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. P1.0.5
PRELIMINARY
22
INTERFACING THE XRT82L38 TO THE LINE
The XRT82L38 in E1 configuration can be transform-
er coupled to 75
coaxial or 120
twisted pair lines
as shown in Figure 12 and Figure 13 below. For DS3
applications connecting to a 100
twisted pair line is
shown in Figure 14.
T
ABLE
1: E
XAMPLES
OF
B8ZS E
NCODING
C
ASE
1
P
RECEDING
P
ULSE
N
EXT
8 B
ITS
Input
+
00000000
B8ZS
000VB0VB
AMI Output
+
000+ -0- +
Case 2
Input
-
00000000
B8ZS
000VB0VB
AMI Output
-
000- +0+ -
T
ABLE
2: T
RANSMIT
E
QUALIZER
C
ONTROL
ECC
ECB
ECA
S
YSTEM
C
ABLE
L
ENGTH
C
ODES
0
0
0
T1
0-133 ft.
B8ZS/AMI (DS1)
0
0
1
T1
133-266 ft.
B8ZS/AMI (DS1)
0
1
0
T1
266-399 ft.
B8ZS/AMI (DS1)
0
1
1
T1
399-533 ft.
B8ZS/AMI (DS1)
1
0
0
T1
533-655 ft.
B8ZS/AMI (DS1)
1
0
1
Not used
1
1
0
Not used
1
1
1
E1
--
HDB3/AMI (E1)
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