參數(shù)資料
型號： XRT83SL30
廠商： Exar Corporation
英文描述： SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
中文描述： 單通道的T1/E1/J1上海收發(fā)器時鐘恢復(fù)和抖動衰減器
文件頁數(shù)： 26/76頁
文件大?。?/td> 376K
代理商： XRT83SL30
XRT83SL30
SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. P1.0.4
á
PRELIMINARY
23
TRANSMIT HDB3/B8ZS ENCODER
The Encoder function is available in both
Hardware
and
Host
modes basis by controlling the TNEG/CODE pin
or CODES interface bit. The encoder is only available in single-rail mode. In E1 mode and with HDB3 encoding
selected, any sequence with four or more consecutive zeros in the input serial data from TPOS/TDATA, will be
removed and replaced with 000V or B00V, where “B” indicates a pulse conforming with the bipolar rule and “V”
representing a pulse violating the rule. An example of HDB3 Encoding is shown in
Table 3
. In a T1 system, an
input data sequence with eight or more consecutive zeros will be removed and replaced using the B8ZS
encoding rule. An example of Bipolar with 8 Zero Substitution (B8ZS) encoding scheme is shown in
Table 4
.
Writing a “
1
” into the CODES interface bit or connecting the TNEG/CODE pin to a “High” level selects the AMI
coding for both E1 or T1 systems.
F
IGURE
10. T
RANSMIT
C
LOCK
AND
I
NPUT
D
ATA
T
IMING
T
ABLE
3: E
XAMPLES
OF
HDB3 E
NCODING
N
UMBER
OF
PULSE
BEFORE
NEXT
4
ZEROS
N
EXT
4
BITS
Input
0000
HDB3 (case1)
odd
000V
HDB3 (case2)
even
B00V
T
ABLE
4: 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- +
C
ASE
2
Input
-
00000000
B8ZS
000VB0VB
AMI Output
-
000- +0+ -
TCLK
R
TCLK
F
TCLK
TPOS/TDATA
or
TNEG
T
SU
T
HO
相關(guān)PDF資料
PDF描述
XRT83SL30IV SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT83SL30ES 功能描述:外圍驅(qū)動器與原件 - PCI 1 CHT1/E1 LIUSH RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT83SL30IV 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
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